Packages

final class WithDefault[K, V] extends Map.WithDefault[K, V] with SortedMap[K, V] with SortedMapOps[K, V, SortedMap, WithDefault[K, V]] with Serializable

Annotations
@SerialVersionUID()
Source
SortedMap.scala
Linear Supertypes
SortedMap[K, V], SortedMapOps[K, V, SortedMap, WithDefault[K, V]], collection.SortedMap[K, V], SortedMapFactoryDefaults[K, V, [x, y]SortedMap[x, y], [x]Iterable[x], [x, y]Map[x, y]], collection.SortedMapOps[K, V, [X, Y]SortedMap[X, Y], WithDefault[K, V]], SortedOps[K, WithDefault[K, V]], Map.WithDefault[K, V], java.io.Serializable, AbstractMap[K, V], Map[K, V], MapOps[K, V, Map, WithDefault[K, V]], Shrinkable[K], Builder[(K, V), WithDefault[K, V]], Growable[(K, V)], Clearable, Cloneable[WithDefault[K, V]], java.lang.Cloneable, Iterable[(K, V)], collection.AbstractMap[K, V], collection.Map[K, V], Equals, MapFactoryDefaults[K, V, [x, y]Map[x, y], [x]Iterable[x]], collection.MapOps[K, V, [_, _]Map[_, _], WithDefault[K, V]], PartialFunction[K, V], (K) => V, collection.AbstractIterable[(K, V)], collection.Iterable[(K, V)], IterableFactoryDefaults[(K, V), [x]Iterable[x]], IterableOps[(K, V), [_]Iterable[_], WithDefault[K, V]], IterableOnceOps[(K, V), [_]Iterable[_], WithDefault[K, V]], IterableOnce[(K, V)], AnyRef, Any
Type Hierarchy
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Inherited
  1. WithDefault
  2. SortedMap
  3. SortedMapOps
  4. SortedMap
  5. SortedMapFactoryDefaults
  6. SortedMapOps
  7. SortedOps
  8. WithDefault
  9. Serializable
  10. AbstractMap
  11. Map
  12. MapOps
  13. Shrinkable
  14. Builder
  15. Growable
  16. Clearable
  17. Cloneable
  18. Cloneable
  19. Iterable
  20. AbstractMap
  21. Map
  22. Equals
  23. MapFactoryDefaults
  24. MapOps
  25. PartialFunction
  26. Function1
  27. AbstractIterable
  28. Iterable
  29. IterableFactoryDefaults
  30. IterableOps
  31. IterableOnceOps
  32. IterableOnce
  33. AnyRef
  34. Any
Implicitly
  1. by UnliftOps
  2. by iterableOnceExtensionMethods
  3. by any2stringadd
  4. by StringFormat
  5. by Ensuring
  6. by ArrowAssoc
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new WithDefault(underlying: SortedMap[K, V], defaultValue: (K) => V)

Type Members

  1. trait GenKeySet extends AnyRef

    A generic trait that is reused by keyset implementations

    A generic trait that is reused by keyset implementations

    Attributes
    protected
    Definition Classes
    MapOps
  2. class KeySet extends AbstractSet[K] with GenKeySet with DefaultSerializable

    The implementation class of the set returned by keySet.

    The implementation class of the set returned by keySet.

    Attributes
    protected
    Definition Classes
    MapOps
  3. trait GenKeySortedSet extends GenKeySet

    A generic trait that is reused by sorted keyset implementations

    A generic trait that is reused by sorted keyset implementations

    Attributes
    protected
    Definition Classes
    SortedMapOps
  4. class KeySortedSet extends SortedSet[K] with GenKeySet with GenKeySortedSet

    The implementation class of the set returned by keySet

    The implementation class of the set returned by keySet

    Attributes
    protected
    Definition Classes
    SortedMapOps

Value Members

  1. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    AnyRef → Any
  2. final def ##: Int

    Equivalent to x.hashCode except for boxed numeric types and null.

    Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any
  3. final def ++[V2 >: V](xs: IterableOnce[(K, V2)]): SortedMap[K, V2]

    Alias for concat

    Alias for concat

    Definition Classes
    SortedMapOpsMapOps
    Annotations
    @inline()
  4. final def ++[B >: (K, V)](suffix: IterableOnce[B]): Iterable[B]

    Alias for concat

    Alias for concat

    Definition Classes
    IterableOps
    Annotations
    @inline()
  5. final def ++=(elems: IterableOnce[(K, V)]): WithDefault.this.type

    Alias for addAll

    Alias for addAll

    Definition Classes
    Growable
    Annotations
    @inline()
  6. final def +=(elem: (K, V)): WithDefault.this.type

    Alias for addOne

    Alias for addOne

    Definition Classes
    Growable
    Annotations
    @inline()
  7. final def --=(xs: IterableOnce[K]): WithDefault.this.type

    Alias for subtractAll

    Alias for subtractAll

    Definition Classes
    Shrinkable
    Annotations
    @inline()
  8. final def -=(elem: K): WithDefault.this.type

    Alias for subtractOne

    Alias for subtractOne

    Definition Classes
    Shrinkable
    Annotations
    @inline()
  9. def ->[B](y: B): (WithDefault[K, V], B)
    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toArrowAssoc[WithDefault[K, V]] performed by method ArrowAssoc in scala.Predef.This conversion will take place only if V is a subclass of Option[Nothing] (V <: Option[Nothing]).
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  10. final def ==(arg0: Any): Boolean

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    AnyRef → Any
  11. def addAll(elems: IterableOnce[(K, V)]): WithDefault.this.type

    Adds all elements produced by an IterableOnce to this mutable map.

    Adds all elements produced by an IterableOnce to this mutable map.

    elems

    the IterableOnce producing the elements to add.

    returns

    the mutable map itself.

    Definition Classes
    Growable
  12. def addOne(elem: (K, V)): WithDefault.this.type

    Adds a single element to this mutable map.

    Adds a single element to this mutable map.

    elem

    the element to add.

    returns

    the mutable map itself

    Definition Classes
    WithDefaultWithDefaultGrowable
  13. def addString(sb: StringBuilder, start: String, sep: String, end: String): sb.type

    Appends all elements of this mutable map to a string builder using start, end, and separator strings.

    Appends all elements of this mutable map to a string builder using start, end, and separator strings. The written text begins with the string start and ends with the string end. Inside, the string representations (w.r.t. the method toString) of all elements of this mutable map are separated by the string sep.

    Example:

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> a.addString(b , "List(" , ", " , ")")
    res5: StringBuilder = List(1, 2, 3, 4)
    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    MapOpsIterableOnceOps
  14. final def addString(b: StringBuilder): b.type

    Appends all elements of this mutable map to a string builder.

    Appends all elements of this mutable map to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this mutable map without any separator string.

    Example:

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> val h = a.addString(b)
    h: StringBuilder = 1234
    b

    the string builder to which elements are appended.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  15. final def addString(b: StringBuilder, sep: String): b.type

    Appends all elements of this mutable map to a string builder using a separator string.

    Appends all elements of this mutable map to a string builder using a separator string. The written text consists of the string representations (w.r.t. the method toString) of all elements of this mutable map, separated by the string sep.

    Example:

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = new StringBuilder()
    b: StringBuilder =
    
    scala> a.addString(b, ", ")
    res0: StringBuilder = 1, 2, 3, 4
    b

    the string builder to which elements are appended.

    sep

    the separator string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  16. def andThen[C](k: PartialFunction[V, C]): PartialFunction[K, C]

    Composes this partial function with another partial function that gets applied to results of this partial function.

    Composes this partial function with another partial function that gets applied to results of this partial function.

    Note that calling isDefinedAt on the resulting partial function may apply the first partial function and execute its side effect. For efficiency, it is recommended to call applyOrElse instead of isDefinedAt or apply.

    C

    the result type of the transformation function.

    k

    the transformation function

    returns

    a partial function with the domain of this partial function narrowed by other partial function, which maps arguments x to k(this(x)).

    Definition Classes
    PartialFunction
  17. def andThen[C](k: (V) => C): PartialFunction[K, C]

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    Composes this partial function with a transformation function that gets applied to results of this partial function.

    If the runtime type of the function is a PartialFunction then the other andThen method is used (note its cautions).

    C

    the result type of the transformation function.

    k

    the transformation function

    returns

    a partial function with the domain of this partial function, possibly narrowed by the specified function, which maps arguments x to k(this(x)).

    Definition Classes
    PartialFunctionFunction1
  18. def apply(key: K): V

    Retrieves the value which is associated with the given key.

    Retrieves the value which is associated with the given key. This method invokes the default method of the map if there is no mapping from the given key to a value. Unless overridden, the default method throws a NoSuchElementException.

    key

    the key

    returns

    the value associated with the given key, or the result of the map's default method, if none exists.

    Definition Classes
    MapOpsFunction1
    Annotations
    @throws(cause = scala.this.throws.<init>$default$1[NoSuchElementException])
  19. def applyOrElse[K1 <: K, V1 >: V](x: K1, default: (K1) => V1): V1

    Applies this partial function to the given argument when it is contained in the function domain.

    Applies this partial function to the given argument when it is contained in the function domain. Applies fallback function where this partial function is not defined.

    Note that expression pf.applyOrElse(x, default) is equivalent to

    if(pf isDefinedAt x) pf(x) else default(x)

    except that applyOrElse method can be implemented more efficiently. For all partial function literals the compiler generates an applyOrElse implementation which avoids double evaluation of pattern matchers and guards. This makes applyOrElse the basis for the efficient implementation for many operations and scenarios, such as:

    • combining partial functions into orElse/andThen chains does not lead to excessive apply/isDefinedAt evaluation
    • lift and unlift do not evaluate source functions twice on each invocation
    • runWith allows efficient imperative-style combining of partial functions with conditionally applied actions

    For non-literal partial function classes with nontrivial isDefinedAt method it is recommended to override applyOrElse with custom implementation that avoids double isDefinedAt evaluation. This may result in better performance and more predictable behavior w.r.t. side effects.

    x

    the function argument

    default

    the fallback function

    returns

    the result of this function or fallback function application.

    Definition Classes
    MapOpsPartialFunction
  20. final def asInstanceOf[T0]: T0

    Cast the receiver object to be of type T0.

    Cast the receiver object to be of type T0.

    Note that the success of a cast at runtime is modulo Scala's erasure semantics. Therefore the expression 1.asInstanceOf[String] will throw a ClassCastException at runtime, while the expression List(1).asInstanceOf[List[String]] will not. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the requested type.

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown

    ClassCastException if the receiver object is not an instance of the erasure of type T0.

  21. def canEqual(that: Any): Boolean

    Checks whether this instance can possibly equal that.

    Checks whether this instance can possibly equal that.

    A method that should be called from every well-designed equals method that is open to be overridden in a subclass. See Programming in Scala, Chapter 28 for discussion and design.

    that

    the value being probed for possible equality

    returns

    true if this instance can possibly equal that, otherwise false

    Definition Classes
    MapEquals
  22. def className: String

    Defines the prefix of this object's toString representation.

    Defines the prefix of this object's toString representation.

    It is recommended to return the name of the concrete collection type, but not implementation subclasses. For example, for ListMap this method should return "ListMap", not "Map" (the supertype) or "Node" (an implementation subclass).

    The default implementation returns "Iterable". It is overridden for the basic collection kinds "Seq", "IndexedSeq", "LinearSeq", "Buffer", "Set", "Map", "SortedSet", "SortedMap" and "View".

    returns

    a string representation which starts the result of toString applied to this mutable map. By default the string prefix is the simple name of the collection class mutable map.

    Attributes
    protected[this]
    Definition Classes
    Iterable
  23. def clear(): Unit

    Clears the contents of this builder.

    Clears the contents of this builder. After execution of this method the builder will contain no elements.

    Definition Classes
    WithDefaultMapOpsBuilderClearable
  24. def clone(): WithDefault[K, V]

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    Definition Classes
    MapOpsCloneable → AnyRef
    Note

    not specified by SLS as a member of AnyRef

  25. final def coll: WithDefault.this.type

    returns

    This collection as a C.

    Attributes
    protected
    Definition Classes
    IterableIterableOps
  26. def collect[K2, V2](pf: PartialFunction[(K, V), (K2, V2)])(implicit ordering: Ordering[K2]): SortedMap[K2, V2]

    Builds a new sorted map by applying a partial function to all elements of this mutable map on which the function is defined.

    Builds a new sorted map by applying a partial function to all elements of this mutable map on which the function is defined.

    pf

    the partial function which filters and maps the mutable map.

    returns

    a new mutable map resulting from applying the given partial function pf to each element on which it is defined and collecting the results. The order of the elements is preserved.

    Definition Classes
    SortedMapOps
  27. def collect[K2, V2](pf: PartialFunction[(K, V), (K2, V2)]): Map[K2, V2]

    Builds a new collection by applying a partial function to all elements of this mutable map on which the function is defined.

    Builds a new collection by applying a partial function to all elements of this mutable map on which the function is defined.

    K2

    the key type of the returned mutable map.

    V2

    the value type of the returned mutable map.

    pf

    the partial function which filters and maps the mutable map.

    returns

    a new mutable map resulting from applying the given partial function pf to each element on which it is defined and collecting the results. The order of the elements is preserved.

    Definition Classes
    MapOps
  28. def collect[B](pf: PartialFunction[(K, V), B]): Iterable[B]

    Builds a new mutable map by applying a partial function to all elements of this mutable map on which the function is defined.

    Builds a new mutable map by applying a partial function to all elements of this mutable map on which the function is defined.

    B

    the element type of the returned mutable map.

    pf

    the partial function which filters and maps the mutable map.

    returns

    a new mutable map resulting from applying the given partial function pf to each element on which it is defined and collecting the results. The order of the elements is preserved.

    Definition Classes
    IterableOpsIterableOnceOps
  29. def collectFirst[B](pf: PartialFunction[(K, V), B]): Option[B]

    Finds the first element of the mutable map for which the given partial function is defined, and applies the partial function to it.

    Finds the first element of the mutable map for which the given partial function is defined, and applies the partial function to it.

    Note: may not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    pf

    the partial function

    returns

    an option value containing pf applied to the first value for which it is defined, or None if none exists.

    Definition Classes
    IterableOnceOps
    Example:
    1. Seq("a", 1, 5L).collectFirst({ case x: Int => x*10 }) = Some(10)

  30. def compose[R](k: PartialFunction[R, K]): PartialFunction[R, V]

    Composes another partial function k with this partial function so that this partial function gets applied to results of k.

    Composes another partial function k with this partial function so that this partial function gets applied to results of k.

    Note that calling isDefinedAt on the resulting partial function may apply the first partial function and execute its side effect. For efficiency, it is recommended to call applyOrElse instead of isDefinedAt or apply.

    R

    the parameter type of the transformation function.

    k

    the transformation function

    returns

    a partial function with the domain of other partial function narrowed by this partial function, which maps arguments x to this(k(x)).

    Definition Classes
    PartialFunction
  31. def compose[A](g: (A) => K): (A) => V

    Composes two instances of Function1 in a new Function1, with this function applied last.

    Composes two instances of Function1 in a new Function1, with this function applied last.

    A

    the type to which function g can be applied

    g

    a function A => T1

    returns

    a new function f such that f(x) == apply(g(x))

    Definition Classes
    Function1
    Annotations
    @unspecialized()
  32. def concat[V2 >: V](suffix: IterableOnce[(K, V2)]): SortedMap[K, V2]

    Returns a new mutable map containing the elements from the left hand operand followed by the elements from the right hand operand.

    Returns a new mutable map containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the mutable map is the most specific superclass encompassing the element types of the two operands.

    suffix

    the iterable to append.

    returns

    a new mutable map which contains all elements of this mutable map followed by all elements of suffix.

    Definition Classes
    WithDefaultSortedMapOpsWithDefaultMapOps
  33. def concat[B >: (K, V)](suffix: IterableOnce[B]): Iterable[B]

    Returns a new mutable map containing the elements from the left hand operand followed by the elements from the right hand operand.

    Returns a new mutable map containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the mutable map is the most specific superclass encompassing the element types of the two operands.

    B

    the element type of the returned collection.

    suffix

    the iterable to append.

    returns

    a new mutable map which contains all elements of this mutable map followed by all elements of suffix.

    Definition Classes
    IterableOps
  34. def contains(key: K): Boolean

    Tests whether this map contains a binding for a key.

    Tests whether this map contains a binding for a key.

    key

    the key

    returns

    true if there is a binding for key in this map, false otherwise.

    Definition Classes
    MapOps
  35. def copyToArray[B >: (K, V)](xs: Array[B], start: Int, len: Int): Int

    Copy elements to an array, returning the number of elements written.

    Copy elements to an array, returning the number of elements written.

    Fills the given array xs starting at index start with at most len elements of this mutable map.

    Copying will stop once either all the elements of this mutable map have been copied, or the end of the array is reached, or len elements have been copied.

    B

    the type of the elements of the array.

    xs

    the array to fill.

    start

    the starting index of xs.

    len

    the maximal number of elements to copy.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Note

    Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

  36. def copyToArray[B >: (K, V)](xs: Array[B], start: Int): Int

    Copies elements to an array, returning the number of elements written.

    Copies elements to an array, returning the number of elements written.

    Fills the given array xs starting at index start with values of this mutable map.

    Copying will stop once either all the elements of this mutable map have been copied, or the end of the array is reached.

    B

    the type of the elements of the array.

    xs

    the array to fill.

    start

    the starting index of xs.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
    Note

    Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

  37. def copyToArray[B >: (K, V)](xs: Array[B]): Int

    Copies elements to an array, returning the number of elements written.

    Copies elements to an array, returning the number of elements written.

    Fills the given array xs starting at index start with values of this mutable map.

    Copying will stop once either all the elements of this mutable map have been copied, or the end of the array is reached.

    B

    the type of the elements of the array.

    xs

    the array to fill.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
    Note

    Reuse: After calling this method, one should discard the iterator it was called on. Using it is undefined and subject to change.

  38. def corresponds[B](that: IterableOnce[B])(p: ((K, V), B) => Boolean): Boolean

    Tests whether every element of this collection's iterator relates to the corresponding element of another collection by satisfying a test predicate.

    Tests whether every element of this collection's iterator relates to the corresponding element of another collection by satisfying a test predicate.

    Note: will not terminate for infinite-sized collections.

    B

    the type of the elements of that

    that

    the other collection

    p

    the test predicate, which relates elements from both collections

    returns

    true if both collections have the same length and p(x, y) is true for all corresponding elements x of this iterator and y of that, otherwise false

    Definition Classes
    IterableOnceOps
  39. def count(p: ((K, V)) => Boolean): Int

    Counts the number of elements in the mutable map which satisfy a predicate.

    Counts the number of elements in the mutable map which satisfy a predicate.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    Definition Classes
    IterableOnceOps
  40. def default(key: K): V

    Defines the default value computation for the map, returned when a key is not found.

    Defines the default value computation for the map, returned when a key is not found.

    The method implemented here throws an exception, but it may be overridden by subclasses.

    key

    the given key value for which a binding is missing.

    Definition Classes
    WithDefaultMapOps
    Exceptions thrown

    NoSuchElementException if no default value is defined

  41. val defaultValue: (K) => V
    Definition Classes
    WithDefault
  42. def drop(n: Int): WithDefault[K, V]

    Selects all elements except the first n ones.

    Selects all elements except the first n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to drop from this mutable map.

    returns

    a mutable map consisting of all elements of this mutable map except the first n ones, or else the empty mutable map, if this mutable map has less than n elements. If n is negative, don't drop any elements.

    Definition Classes
    IterableOpsIterableOnceOps
  43. def dropRight(n: Int): WithDefault[K, V]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to drop from this mutable map.

    returns

    a mutable map consisting of all elements of this mutable map except the last n ones, or else the empty mutable map, if this mutable map has less than n elements. If n is negative, don't drop any elements.

    Definition Classes
    IterableOps
  44. def dropWhile(p: ((K, V)) => Boolean): WithDefault[K, V]

    Selects all elements except the longest prefix that satisfies a predicate.

    Selects all elements except the longest prefix that satisfies a predicate.

    The matching prefix starts with the first element of this mutable map, and the element following the prefix is the first element that does not satisfy the predicate. The matching prefix may be empty, so that this method returns the entire mutable map.

    Example:

    scala> List(1, 2, 3, 100, 4).dropWhile(n => n < 10)
    val res0: List[Int] = List(100, 4)
    
    scala> List(1, 2, 3, 100, 4).dropWhile(n => n == 0)
    val res1: List[Int] = List(1, 2, 3, 100, 4)

    Use span to obtain both the prefix and suffix. Use filterNot to drop all elements that satisfy the predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    The predicate used to test elements.

    returns

    the longest suffix of this mutable map whose first element does not satisfy the predicate p.

    Definition Classes
    IterableOpsIterableOnceOps
  45. def elementWise: ElementWiseExtractor[K, V]

    Returns an extractor object with a unapplySeq method, which extracts each element of a sequence data.

    Returns an extractor object with a unapplySeq method, which extracts each element of a sequence data.

    Definition Classes
    PartialFunction
    Example:
    1. val firstChar: String => Option[Char] = _.headOption
      
      Seq("foo", "bar", "baz") match {
        case firstChar.unlift.elementWise(c0, c1, c2) =>
          println(s"$c0, $c1, $c2") // Output: f, b, b
      }
  46. def empty: WithDefault[K, V]

    The empty iterable of the same type as this iterable.

    The empty iterable of the same type as this iterable.

    returns

    an empty iterable of type C.

    Definition Classes
    WithDefaultSortedMapFactoryDefaultsWithDefaultMapFactoryDefaultsIterableFactoryDefaultsIterableOps
  47. def ensuring(cond: (WithDefault[K, V]) => Boolean, msg: => Any): WithDefault[K, V]
    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toEnsuring[WithDefault[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  48. def ensuring(cond: (WithDefault[K, V]) => Boolean): WithDefault[K, V]
    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toEnsuring[WithDefault[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  49. def ensuring(cond: Boolean, msg: => Any): WithDefault[K, V]
    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toEnsuring[WithDefault[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  50. def ensuring(cond: Boolean): WithDefault[K, V]
    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toEnsuring[WithDefault[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  51. final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (that) is a reference to the receiver object (this).

    Tests whether the argument (that) is a reference to the receiver object (this).

    The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:

    • It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
    • For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
    • null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  52. def equals(that: Any): Boolean

    Equality of maps is implemented using the lookup method get.

    Equality of maps is implemented using the lookup method get. This method returns true if

    • the argument o is a Map,
    • the two maps have the same size, and
    • for every (key, value) pair in this map, other.get(key) == Some(value).

    The implementation of equals checks the canEqual method, so subclasses of Map can narrow down the equality to specific map types. The Map implementations in the standard library can all be compared, their canEqual methods return true.

    Note: The equals method only respects the equality laws (symmetry, transitivity) if the two maps use the same key equivalence function in their lookup operation. For example, the key equivalence operation in a scala.collection.immutable.TreeMap is defined by its ordering. Comparing a TreeMap with a HashMap leads to unexpected results if ordering.equiv(k1, k2) (used for lookup in TreeMap) is different from k1 == k2 (used for lookup in HashMap).

    scala> import scala.collection.immutable._
    scala> val ord: Ordering[String] = _ compareToIgnoreCase _
    
    scala> TreeMap("A" -> 1)(ord) == HashMap("a" -> 1)
    val res0: Boolean = false
    
    scala> HashMap("a" -> 1) == TreeMap("A" -> 1)(ord)
    val res1: Boolean = true
    returns

    true if the two maps are equal according to the description

    Definition Classes
    SortedMapMapEquals → AnyRef → Any
  53. def exists(p: ((K, V)) => Boolean): Boolean

    Tests whether a predicate holds for at least one element of this mutable map.

    Tests whether a predicate holds for at least one element of this mutable map.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p is satisfied by at least one element of this mutable map, otherwise false

    Definition Classes
    IterableOnceOps
  54. def filter(pred: ((K, V)) => Boolean): WithDefault[K, V]

    Selects all elements of this mutable map which satisfy a predicate.

    Selects all elements of this mutable map which satisfy a predicate.

    returns

    a new mutable map consisting of all elements of this mutable map that satisfy the given predicate p. The order of the elements is preserved.

    Definition Classes
    IterableOpsIterableOnceOps
  55. def filterInPlace(p: (K, V) => Boolean): WithDefault.this.type

    Retains only those mappings for which the predicate p returns true.

    Retains only those mappings for which the predicate p returns true.

    p

    The test predicate

    Definition Classes
    MapOps
  56. def filterNot(pred: ((K, V)) => Boolean): WithDefault[K, V]

    Selects all elements of this mutable map which do not satisfy a predicate.

    Selects all elements of this mutable map which do not satisfy a predicate.

    pred

    the predicate used to test elements.

    returns

    a new mutable map consisting of all elements of this mutable map that do not satisfy the given predicate pred. Their order may not be preserved.

    Definition Classes
    IterableOpsIterableOnceOps
  57. def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
    Note

    not specified by SLS as a member of AnyRef

  58. def find(p: ((K, V)) => Boolean): Option[(K, V)]

    Finds the first element of the mutable map satisfying a predicate, if any.

    Finds the first element of the mutable map satisfying a predicate, if any.

    Note: may not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the predicate used to test elements.

    returns

    an option value containing the first element in the mutable map that satisfies p, or None if none exists.

    Definition Classes
    IterableOnceOps
  59. def firstKey: K

    Returns the first key of the collection.

    Returns the first key of the collection.

    Definition Classes
    SortedMapOpsSortedOps
  60. def flatMap[K2, V2](f: ((K, V)) => IterableOnce[(K2, V2)])(implicit ordering: Ordering[K2]): SortedMap[K2, V2]

    Builds a new sorted map by applying a function to all elements of this mutable map and using the elements of the resulting collections.

    Builds a new sorted map by applying a function to all elements of this mutable map and using the elements of the resulting collections.

    f

    the function to apply to each element.

    returns

    a new mutable map resulting from applying the given collection-valued function f to each element of this mutable map and concatenating the results.

    Definition Classes
    SortedMapOps
  61. def flatMap[K2, V2](f: ((K, V)) => IterableOnce[(K2, V2)]): Map[K2, V2]

    Builds a new map by applying a function to all elements of this mutable map and using the elements of the resulting collections.

    Builds a new map by applying a function to all elements of this mutable map and using the elements of the resulting collections.

    f

    the function to apply to each element.

    returns

    a new mutable map resulting from applying the given collection-valued function f to each element of this mutable map and concatenating the results.

    Definition Classes
    MapOps
  62. def flatMap[B](f: ((K, V)) => IterableOnce[B]): Iterable[B]

    Builds a new mutable map by applying a function to all elements of this mutable map and using the elements of the resulting collections.

    Builds a new mutable map by applying a function to all elements of this mutable map and using the elements of the resulting collections.

    For example:

    def getWords(lines: Seq[String]): Seq[String] = lines flatMap (line => line split "\\W+")

    The type of the resulting collection is guided by the static type of mutable map. This might cause unexpected results sometimes. For example:

    // lettersOf will return a Seq[Char] of likely repeated letters, instead of a Set
    def lettersOf(words: Seq[String]) = words flatMap (word => word.toSet)
    
    // lettersOf will return a Set[Char], not a Seq
    def lettersOf(words: Seq[String]) = words.toSet flatMap ((word: String) => word.toSeq)
    
    // xs will be an Iterable[Int]
    val xs = Map("a" -> List(11,111), "b" -> List(22,222)).flatMap(_._2)
    
    // ys will be a Map[Int, Int]
    val ys = Map("a" -> List(1 -> 11,1 -> 111), "b" -> List(2 -> 22,2 -> 222)).flatMap(_._2)
    B

    the element type of the returned collection.

    f

    the function to apply to each element.

    returns

    a new mutable map resulting from applying the given collection-valued function f to each element of this mutable map and concatenating the results.

    Definition Classes
    IterableOpsIterableOnceOps
  63. def flatten[B](implicit asIterable: ((K, V)) => IterableOnce[B]): Iterable[B]

    Converts this mutable map of iterable collections into a mutable map formed by the elements of these iterable collections.

    Converts this mutable map of iterable collections into a mutable map formed by the elements of these iterable collections.

    The resulting collection's type will be guided by the type of mutable map. For example:

    val xs = List(
               Set(1, 2, 3),
               Set(1, 2, 3)
             ).flatten
    // xs == List(1, 2, 3, 1, 2, 3)
    
    val ys = Set(
               List(1, 2, 3),
               List(3, 2, 1)
             ).flatten
    // ys == Set(1, 2, 3)
    B

    the type of the elements of each iterable collection.

    asIterable

    an implicit conversion which asserts that the element type of this mutable map is an Iterable.

    returns

    a new mutable map resulting from concatenating all element mutable maps.

    Definition Classes
    IterableOpsIterableOnceOps
  64. def fold[A1 >: (K, V)](z: A1)(op: (A1, A1) => A1): A1

    Applies the given binary operator op to the given initial value z and all elements of this mutable map.

    Applies the given binary operator op to the given initial value z and all elements of this mutable map.

    For each application of the operator, each operand is either an element of this mutable map, the initial value, or another such application of the operator.

    The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation. The initial value may be used an arbitrary number of times, but at least once.

    If this collection is ordered, then for any application of the operator, the element(s) appearing in the left operand will precede those in the right.

    Note: might return different results for different runs, unless either of the following conditions is met: (1) the operator is associative, and the underlying collection type is ordered; or (2) the operator is associative and commutative. In either case, it is also necessary that the initial value be a neutral value for the operator, e.g. Nil for List concatenation or 1 for multiplication.

    The default implementation in IterableOnce is equivalent to foldLeft but may be overridden for more efficient traversal orders.

    Note: will not terminate for infinite-sized collections.

    A1

    The type parameter for the binary operator, a supertype of A.

    z

    An initial value; may be used an arbitrary number of times in the computation of the result; must be a neutral value for op for the result to always be the same across runs.

    op

    A binary operator; must be associative for the result to always be the same across runs.

    returns

    The result of applying op between all the elements and z, or z if this mutable map is empty.

    Definition Classes
    IterableOnceOps
  65. def foldLeft[B](z: B)(op: (B, (K, V)) => B): B

    Applies the given binary operator op to the given initial value z and all elements of this mutable map, going left to right.

    Applies the given binary operator op to the given initial value z and all elements of this mutable map, going left to right. Returns the initial value if this mutable map is empty.

    "Going left to right" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this mutable map, the result is op( op( ... op( op(z, x1), x2) ... ), xn).

    If this collection is not ordered, then for each application of the operator, each right operand is an element. In addition, the leftmost operand is the initial value, and each other left operand is itself an application of the operator. The elements of this mutable map and the initial value all appear exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator.

    z

    An initial value.

    op

    A binary operator.

    returns

    The result of applying op to z and all elements of this mutable map, going left to right. Returns z if this mutable map is empty.

    Definition Classes
    IterableOnceOps
  66. def foldRight[B](z: B)(op: ((K, V), B) => B): B

    Applies the given binary operator op to all elements of this mutable map and the given initial value z, going right to left.

    Applies the given binary operator op to all elements of this mutable map and the given initial value z, going right to left. Returns the initial value if this mutable map is empty.

    "Going right to left" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this mutable map, the result is op(x1, op(x2, op( ... op(xn, z) ... ))).

    If this collection is not ordered, then for each application of the operator, each left operand is an element. In addition, the rightmost operand is the initial value, and each other right operand is itself an application of the operator. The elements of this mutable map and the initial value all appear exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator.

    z

    An initial value.

    op

    A binary operator.

    returns

    The result of applying op to all elements of this mutable map and z, going right to left. Returns z if this mutable map is empty.

    Definition Classes
    IterableOnceOps
  67. def forall(p: ((K, V)) => Boolean): Boolean

    Tests whether a predicate holds for all elements of this mutable map.

    Tests whether a predicate holds for all elements of this mutable map.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    true if this mutable map is empty or the given predicate p holds for all elements of this mutable map, otherwise false.

    Definition Classes
    IterableOnceOps
  68. def foreach[U](f: ((K, V)) => U): Unit

    Applies f to each element for its side effects.

    Applies f to each element for its side effects. Note: U parameter needed to help scalac's type inference.

    Definition Classes
    IterableOnceOps
  69. def foreachEntry[U](f: (K, V) => U): Unit

    Apply f to each key/value pair for its side effects Note: [U] parameter needed to help scalac's type inference.

    Apply f to each key/value pair for its side effects Note: [U] parameter needed to help scalac's type inference.

    Definition Classes
    MapOps
  70. def fromSpecific(coll: IterableOnce[(K, V)]): WithDefault[K, V]

    Defines how to turn a given Iterable[A] into a collection of type C.

    Defines how to turn a given Iterable[A] into a collection of type C.

    This process can be done in a strict way or a non-strict way (ie. without evaluating the elements of the resulting collections). In other words, this methods defines the evaluation model of the collection.

    Attributes
    protected
    Definition Classes
    WithDefaultSortedMapFactoryDefaultsWithDefaultMapFactoryDefaultsIterableFactoryDefaultsIterableOps
    Note

    When implementing a custom collection type and refining C to the new type, this method needs to be overridden (the compiler will issue an error otherwise). In the common case where C =:= CC[A], this can be done by mixing in the scala.collection.IterableFactoryDefaults trait, which implements the method using iterableFactory.

    ,

    As witnessed by the @uncheckedVariance annotation, using this method might be unsound. However, as long as it is called with an Iterable[A] obtained from this collection (as it is the case in the implementations of operations where we use a View[A]), it is safe.

  71. def get(key: K): Option[V]

    Optionally returns the value associated with a key.

    Optionally returns the value associated with a key.

    key

    the key value

    returns

    an option value containing the value associated with key in this map, or None if none exists.

    Definition Classes
    WithDefaultMapOps
  72. final def getClass(): Class[_ <: AnyRef]

    Returns the runtime class representation of the object.

    Returns the runtime class representation of the object.

    returns

    a class object corresponding to the runtime type of the receiver.

    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  73. def getOrElse[V1 >: V](key: K, default: => V1): V1

    Returns the value associated with a key, or a default value if the key is not contained in the map.

    Returns the value associated with a key, or a default value if the key is not contained in the map.

    V1

    the result type of the default computation.

    key

    the key.

    default

    a computation that yields a default value in case no binding for key is found in the map.

    returns

    the value associated with key if it exists, otherwise the result of the default computation.

    Definition Classes
    MapOps
  74. def getOrElseUpdate(key: K, defaultValue: => V): V

    If given key is already in this map, returns associated value.

    If given key is already in this map, returns associated value.

    Otherwise, computes value from given expression op, stores with key in map and returns that value.

    Concurrent map implementations may evaluate the expression op multiple times, or may evaluate op without inserting the result.

    key

    the key to test

    defaultValue

    the computation yielding the value to associate with key, if key is previously unbound.

    returns

    the value associated with key (either previously or as a result of executing the method).

    Definition Classes
    MapOps
  75. def groupBy[K](f: ((K, V)) => K): immutable.Map[K, WithDefault[K, V]]

    Partitions this mutable map into a map of mutable maps according to some discriminator function.

    Partitions this mutable map into a map of mutable maps according to some discriminator function.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    K

    the type of keys returned by the discriminator function.

    f

    the discriminator function.

    returns

    A map from keys to mutable maps such that the following invariant holds:

    (xs groupBy f)(k) = xs filter (x => f(x) == k)

    That is, every key k is bound to a mutable map of those elements x for which f(x) equals k.

    Definition Classes
    IterableOps
  76. def groupMap[K, B](key: ((K, V)) => K)(f: ((K, V)) => B): immutable.Map[K, Iterable[B]]

    Partitions this mutable map into a map of mutable maps according to a discriminator function key.

    Partitions this mutable map into a map of mutable maps according to a discriminator function key. Each element in a group is transformed into a value of type B using the value function.

    It is equivalent to groupBy(key).mapValues(_.map(f)), but more efficient.

    case class User(name: String, age: Int)
    
    def namesByAge(users: Seq[User]): Map[Int, Seq[String]] =
      users.groupMap(_.age)(_.name)

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    K

    the type of keys returned by the discriminator function

    B

    the type of values returned by the transformation function

    key

    the discriminator function

    f

    the element transformation function

    Definition Classes
    IterableOps
  77. def groupMapReduce[K, B](key: ((K, V)) => K)(f: ((K, V)) => B)(reduce: (B, B) => B): immutable.Map[K, B]

    Partitions this mutable map into a map according to a discriminator function key.

    Partitions this mutable map into a map according to a discriminator function key. All the values that have the same discriminator are then transformed by the f function and then reduced into a single value with the reduce function.

    It is equivalent to groupBy(key).mapValues(_.map(f).reduce(reduce)), but more efficient.

    def occurrences[A](as: Seq[A]): Map[A, Int] =
      as.groupMapReduce(identity)(_ => 1)(_ + _)

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    Definition Classes
    IterableOps
  78. def grouped(size: Int): Iterator[WithDefault[K, V]]

    Partitions elements in fixed size mutable maps.

    Partitions elements in fixed size mutable maps.

    size

    the number of elements per group

    returns

    An iterator producing mutable maps of size size, except the last will be less than size size if the elements don't divide evenly.

    Definition Classes
    IterableOps
    See also

    scala.collection.Iterator, method grouped

  79. def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

    the hash code value for this object.

    Definition Classes
    Map → AnyRef → Any
  80. def head: (K, V)

    Selects the first element of this mutable map.

    Selects the first element of this mutable map.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this mutable map.

    Definition Classes
    IterableOps
    Exceptions thrown

    NoSuchElementException if the mutable map is empty.

  81. def headOption: Option[(K, V)]

    Optionally selects the first element.

    Optionally selects the first element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the first element of this mutable map if it is nonempty, None if it is empty.

    Definition Classes
    IterableOps
  82. def init: WithDefault[K, V]

    The initial part of the collection without its last element.

    The initial part of the collection without its last element.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    Definition Classes
    IterableOps
  83. def inits: Iterator[WithDefault[K, V]]

    Iterates over the inits of this mutable map.

    Iterates over the inits of this mutable map. The first value will be this mutable map and the final one will be an empty mutable map, with the intervening values the results of successive applications of init.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    returns

    an iterator over all the inits of this mutable map

    Definition Classes
    IterableOps
    Example:
    1. List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)

  84. def isDefinedAt(key: K): Boolean

    Tests whether this map contains a binding for a key.

    Tests whether this map contains a binding for a key. This method, which implements an abstract method of trait PartialFunction, is equivalent to contains.

    key

    the key

    returns

    true if there is a binding for key in this map, false otherwise.

    Definition Classes
    MapOpsPartialFunction
  85. def isEmpty: Boolean

    Tests whether the mutable map is empty.

    Tests whether the mutable map is empty.

    Note: The default implementation creates and discards an iterator.

    Note: Implementations in subclasses that are not repeatedly iterable must take care not to consume any elements when isEmpty is called.

    returns

    true if the mutable map contains no elements, false otherwise.

    Definition Classes
    WithDefaultIterableOnceOps
  86. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object has the same erasure as T0.

    Test whether the dynamic type of the receiver object has the same erasure as T0.

    Depending on what T0 is, the test is done in one of the below ways:

    • T0 is a non-parameterized class type, e.g. BigDecimal: this method returns true if the value of the receiver object is a BigDecimal or a subtype of BigDecimal.
    • T0 is a parameterized class type, e.g. List[Int]: this method returns true if the value of the receiver object is some List[X] for any X. For example, List(1, 2, 3).isInstanceOf[List[String]] will return true.
    • T0 is some singleton type x.type or literal x: this method returns this.eq(x). For example, x.isInstanceOf[1] is equivalent to x.eq(1)
    • T0 is an intersection X with Y or X & Y: this method is equivalent to x.isInstanceOf[X] && x.isInstanceOf[Y]
    • T0 is a union X | Y: this method is equivalent to x.isInstanceOf[X] || x.isInstanceOf[Y]
    • T0 is a type parameter or an abstract type member: this method is equivalent to isInstanceOf[U] where U is T0's upper bound, Any if T0 is unbounded. For example, x.isInstanceOf[A] where A is an unbounded type parameter will return true for any value of x.

    This is exactly equivalent to the type pattern _: T0

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    Definition Classes
    Any
    Note

    due to the unexpectedness of List(1, 2, 3).isInstanceOf[List[String]] returning true and x.isInstanceOf[A] where A is a type parameter or abstract member returning true, these forms issue a warning.

  87. def isTraversableAgain: Boolean

    Tests whether this mutable map can be repeatedly traversed.

    Tests whether this mutable map can be repeatedly traversed. Always true for Iterables and false for Iterators unless overridden.

    returns

    true if it is repeatedly traversable, false otherwise.

    Definition Classes
    IterableOpsIterableOnceOps
  88. def iterableFactory: IterableFactory[Iterable]

    The companion object of this mutable map, providing various factory methods.

    The companion object of this mutable map, providing various factory methods.

    Definition Classes
    IterableIterableIterableOps
    Note

    When implementing a custom collection type and refining CC to the new type, this method needs to be overridden to return a factory for the new type (the compiler will issue an error otherwise).

  89. def iterator: Iterator[(K, V)]

    An scala.collection.Iterator over the elements of this mutable map.

    An scala.collection.Iterator over the elements of this mutable map.

    If an IterableOnce object is in fact an scala.collection.Iterator, this method always returns itself, in its current state, but if it is an scala.collection.Iterable, this method always returns a new scala.collection.Iterator.

    Definition Classes
    WithDefaultIterableOnce
  90. def iteratorFrom(start: K): Iterator[(K, V)]

    Creates an iterator over all the key/value pairs contained in this map having a key greater than or equal to start according to the ordering of this map.

    Creates an iterator over all the key/value pairs contained in this map having a key greater than or equal to start according to the ordering of this map. x.iteratorFrom(y) is equivalent to but often more efficient than x.from(y).iterator.

    start

    The lower bound (inclusive) on the keys to be returned

    Definition Classes
    WithDefaultSortedMapOps
  91. def keySet: collection.SortedSet[K]

    A set representing the keys contained by this map.

    A set representing the keys contained by this map.

    For efficiency the resulting set may be a view (maintaining a reference to the map and reflecting modifications to the map), but it may also be a strict collection without reference to the map.

    • To ensure an independent strict collection, use m.keysIterator.toSet
    • To obtain a view on the keys, use scala.collection.View.fromIteratorProvider(m.keysIterator)
    returns

    a set representing the keys contained by this map

    Definition Classes
    SortedMapOpsMapOps
  92. def keyStepper[S <: Stepper[_]](implicit shape: StepperShape[K, S]): S

    Returns a Stepper for the keys of this map.

    Returns a Stepper for the keys of this map. See method stepper.

    Definition Classes
    MapOps
  93. def keys: collection.Iterable[K]

    An Iterable collection of the keys contained by this map.

    An Iterable collection of the keys contained by this map.

    For efficiency the resulting collection may be a view (maintaining a reference to the map and reflecting modifications to the map), but it may also be a strict collection without reference to the map.

    • To ensure an independent strict collection, use m.keysIterator.toSet
    • To obtain a view on the keys, use scala.collection.View.fromIteratorProvider(m.keysIterator)
    returns

    an Iterable collection of the keys contained by this map

    Definition Classes
    MapOps
    Annotations
    @deprecatedOverriding()
  94. def keysIterator: Iterator[K]

    An Iterator of the keys contained by this map.

    An Iterator of the keys contained by this map.

    returns

    an Iterator of the keys contained by this map

    Definition Classes
    MapOps
  95. def keysIteratorFrom(start: K): Iterator[K]

    Creates an iterator over all the keys(or elements) contained in this collection greater than or equal to start according to the ordering of this collection.

    Creates an iterator over all the keys(or elements) contained in this collection greater than or equal to start according to the ordering of this collection. x.keysIteratorFrom(y) is equivalent to but often more efficient than x.from(y).keysIterator.

    start

    The lower bound (inclusive) on the keys to be returned

    Definition Classes
    WithDefaultSortedMapOps
  96. def knownSize: Int

    The number of elements in the collection under construction, if it can be cheaply computed, -1 otherwise.

    The number of elements in the collection under construction, if it can be cheaply computed, -1 otherwise.

    returns

    The number of elements. The default implementation always returns -1.

    Definition Classes
    WithDefaultMapOpsGrowableIterableOnce
  97. def last: (K, V)

    Selects the last element.

    Selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    The last element of this mutable map.

    Definition Classes
    IterableOps
    Exceptions thrown

    NoSuchElementException If the mutable map is empty.

  98. def lastKey: K

    Returns the last key of the collection.

    Returns the last key of the collection.

    Definition Classes
    SortedMapOpsSortedOps
  99. def lastOption: Option[(K, V)]

    Optionally selects the last element.

    Optionally selects the last element.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    returns

    the last element of this mutable map$ if it is nonempty, None if it is empty.

    Definition Classes
    IterableOps
  100. def lazyZip[B](that: collection.Iterable[B]): LazyZip2[(K, V), B, WithDefault.this.type]

    Analogous to zip except that the elements in each collection are not consumed until a strict operation is invoked on the returned LazyZip2 decorator.

    Analogous to zip except that the elements in each collection are not consumed until a strict operation is invoked on the returned LazyZip2 decorator.

    Calls to lazyZip can be chained to support higher arities (up to 4) without incurring the expense of constructing and deconstructing intermediary tuples.

    val xs = List(1, 2, 3)
    val res = (xs lazyZip xs lazyZip xs lazyZip xs).map((a, b, c, d) => a + b + c + d)
    // res == List(4, 8, 12)
    B

    the type of the second element in each eventual pair

    that

    the iterable providing the second element of each eventual pair

    returns

    a decorator LazyZip2 that allows strict operations to be performed on the lazily evaluated pairs or chained calls to lazyZip. Implicit conversion to Iterable[(A, B)] is also supported.

    Definition Classes
    Iterable
  101. def lift: (K) => Option[V]

    Turns this partial function into a plain function returning an Option result.

    Turns this partial function into a plain function returning an Option result.

    returns

    a function that takes an argument x to Some(this(x)) if this is defined for x, and to None otherwise.

    Definition Classes
    PartialFunction
    See also

    Function.unlift

  102. def map[K2, V2](f: ((K, V)) => (K2, V2))(implicit ordering: Ordering[K2]): SortedMap[K2, V2]

    Builds a new sorted map by applying a function to all elements of this mutable map.

    Builds a new sorted map by applying a function to all elements of this mutable map.

    f

    the function to apply to each element.

    returns

    a new mutable map resulting from applying the given function f to each element of this mutable map and collecting the results.

    Definition Classes
    SortedMapOps
  103. def map[K2, V2](f: ((K, V)) => (K2, V2)): Map[K2, V2]

    Builds a new map by applying a function to all elements of this mutable map.

    Builds a new map by applying a function to all elements of this mutable map.

    f

    the function to apply to each element.

    returns

    a new mutable map resulting from applying the given function f to each element of this mutable map and collecting the results.

    Definition Classes
    MapOps
  104. def map[B](f: ((K, V)) => B): Iterable[B]

    Builds a new mutable map by applying a function to all elements of this mutable map.

    Builds a new mutable map by applying a function to all elements of this mutable map.

    B

    the element type of the returned mutable map.

    f

    the function to apply to each element.

    returns

    a new mutable map resulting from applying the given function f to each element of this mutable map and collecting the results.

    Definition Classes
    IterableOpsIterableOnceOps
  105. def mapFactory: MapFactory[Map]

    The companion object of this map, providing various factory methods.

    The companion object of this map, providing various factory methods.

    Definition Classes
    WithDefaultMapMapMapOps
    Note

    When implementing a custom collection type and refining CC to the new type, this method needs to be overridden to return a factory for the new type (the compiler will issue an error otherwise).

  106. final def mapFromIterable[K2, V2](it: collection.Iterable[(K2, V2)]): Map[K2, V2]

    Similar to fromIterable, but returns a Map collection type.

    Similar to fromIterable, but returns a Map collection type. Note that the return type is now CC[K2, V2].

    Attributes
    protected
    Definition Classes
    MapOps
    Annotations
    @inline()
  107. def mapResult[NewTo](f: (WithDefault[K, V]) => NewTo): Builder[(K, V), NewTo]

    A builder resulting from this builder my mapping the result using f.

    A builder resulting from this builder my mapping the result using f.

    Definition Classes
    Builder
  108. def mapValuesInPlace(f: (K, V) => V): WithDefault.this.type

    Applies a transformation function to all values contained in this map.

    Applies a transformation function to all values contained in this map. The transformation function produces new values from existing keys associated values.

    f

    the transformation to apply

    returns

    the map itself.

    Definition Classes
    MapOps
  109. def max[B >: (K, V)](implicit ord: math.Ordering[B]): (K, V)

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    the largest element of this mutable map with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this mutable map is empty.

  110. def maxBefore(key: K): Option[(K, V)]

    Find the element with largest key less than a given key.

    Find the element with largest key less than a given key.

    key

    The given key.

    returns

    None if there is no such node.

    Definition Classes
    SortedMapOps
  111. def maxBy[B](f: ((K, V)) => B)(implicit ord: math.Ordering[B]): (K, V)

    Finds the first element which yields the largest value measured by function f.

    Finds the first element which yields the largest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    the first element of this mutable map with the largest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this mutable map is empty.

  112. def maxByOption[B](f: ((K, V)) => B)(implicit ord: math.Ordering[B]): Option[(K, V)]

    Finds the first element which yields the largest value measured by function f.

    Finds the first element which yields the largest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    an option value containing the first element of this mutable map with the largest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
  113. def maxOption[B >: (K, V)](implicit ord: math.Ordering[B]): Option[(K, V)]

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    an option value containing the largest element of this mutable map with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
  114. def min[B >: (K, V)](implicit ord: math.Ordering[B]): (K, V)

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    the smallest element of this mutable map with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this mutable map is empty.

  115. def minAfter(key: K): Option[(K, V)]

    Find the element with smallest key larger than or equal to a given key.

    Find the element with smallest key larger than or equal to a given key.

    key

    The given key.

    returns

    None if there is no such node.

    Definition Classes
    SortedMapOps
  116. def minBy[B](f: ((K, V)) => B)(implicit ord: math.Ordering[B]): (K, V)

    Finds the first element which yields the smallest value measured by function f.

    Finds the first element which yields the smallest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    the first element of this mutable map with the smallest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this mutable map is empty.

  117. def minByOption[B](f: ((K, V)) => B)(implicit ord: math.Ordering[B]): Option[(K, V)]

    Finds the first element which yields the smallest value measured by function f.

    Finds the first element which yields the smallest value measured by function f.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    an option value containing the first element of this mutable map with the smallest value measured by function f with respect to the ordering cmp.

    Definition Classes
    IterableOnceOps
  118. def minOption[B >: (K, V)](implicit ord: math.Ordering[B]): Option[(K, V)]

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    an option value containing the smallest element of this mutable map with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
  119. final def mkString: String

    Displays all elements of this mutable map in a string.

    Displays all elements of this mutable map in a string.

    Delegates to addString, which can be overridden.

    returns

    a string representation of this mutable map. In the resulting string the string representations (w.r.t. the method toString) of all elements of this mutable map follow each other without any separator string.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  120. final def mkString(sep: String): String

    Displays all elements of this mutable map in a string using a separator string.

    Displays all elements of this mutable map in a string using a separator string.

    Delegates to addString, which can be overridden.

    sep

    the separator string.

    returns

    a string representation of this mutable map. In the resulting string the string representations (w.r.t. the method toString) of all elements of this mutable map are separated by the string sep.

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
    Example:
    1. List(1, 2, 3).mkString("|") = "1|2|3"

  121. final def mkString(start: String, sep: String, end: String): String

    Displays all elements of this mutable map in a string using start, end, and separator strings.

    Displays all elements of this mutable map in a string using start, end, and separator strings.

    Delegates to addString, which can be overridden.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    a string representation of this mutable map. The resulting string begins with the string start and ends with the string end. Inside, the string representations (w.r.t. the method toString) of all elements of this mutable map are separated by the string sep.

    Definition Classes
    IterableOnceOps
    Example:
    1. List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"

  122. final def ne(arg0: AnyRef): Boolean

    Equivalent to !(this eq that).

    Equivalent to !(this eq that).

    returns

    true if the argument is not a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  123. def newSpecificBuilder: Builder[(K, V), WithDefault[K, V]]

    returns

    a strict builder for the same collection type. Note that in the case of lazy collections (e.g. scala.collection.View or scala.collection.immutable.LazyList), it is possible to implement this method but the resulting Builder will break laziness. As a consequence, operations should preferably be implemented with fromSpecific instead of this method.

    Attributes
    protected
    Definition Classes
    WithDefaultSortedMapFactoryDefaultsWithDefaultMapFactoryDefaultsIterableFactoryDefaultsIterableOps
    Note

    When implementing a custom collection type and refining C to the new type, this method needs to be overridden (the compiler will issue an error otherwise). In the common case where C =:= CC[A], this can be done by mixing in the scala.collection.IterableFactoryDefaults trait, which implements the method using iterableFactory.

    ,

    As witnessed by the @uncheckedVariance annotation, using this method might be unsound. However, as long as the returned builder is only fed with A values taken from this instance, it is safe.

  124. def nonEmpty: Boolean

    Tests whether the mutable map is not empty.

    Tests whether the mutable map is not empty.

    returns

    true if the mutable map contains at least one element, false otherwise.

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
  125. final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Annotations
    @native()
    Note

    not specified by SLS as a member of AnyRef

  126. final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Annotations
    @native()
    Note

    not specified by SLS as a member of AnyRef

  127. def orElse[A1 <: K, B1 >: V](that: PartialFunction[A1, B1]): PartialFunction[A1, B1]

    Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

    Composes this partial function with a fallback partial function which gets applied where this partial function is not defined.

    A1

    the argument type of the fallback function

    B1

    the result type of the fallback function

    that

    the fallback function

    returns

    a partial function which has as domain the union of the domains of this partial function and that. The resulting partial function takes x to this(x) where this is defined, and to that(x) where it is not.

    Definition Classes
    PartialFunction
  128. implicit def ordering: Ordering[K]
    Definition Classes
    WithDefaultSortedOps
  129. def partition(p: ((K, V)) => Boolean): (WithDefault[K, V], WithDefault[K, V])

    A pair of, first, all elements that satisfy predicate p and, second, all elements that do not.

    A pair of, first, all elements that satisfy predicate p and, second, all elements that do not.

    The two mutable map correspond to the result of filter and filterNot, respectively.

    The default implementation provided here needs to traverse the collection twice. Strict collections have an overridden version of partition in StrictOptimizedIterableOps, which requires only a single traversal.

    Definition Classes
    IterableOps
  130. def partitionMap[A1, A2](f: ((K, V)) => Either[A1, A2]): (Iterable[A1], Iterable[A2])

    Applies a function f to each element of the mutable map and returns a pair of mutable maps: the first one made of those values returned by f that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Applies a function f to each element of the mutable map and returns a pair of mutable maps: the first one made of those values returned by f that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Example:

    val xs = `mutable.Map`(1, "one", 2, "two", 3, "three") partitionMap {
     case i: Int => Left(i)
     case s: String => Right(s)
    }
    // xs == (`mutable.Map`(1, 2, 3),
    //        `mutable.Map`(one, two, three))
    A1

    the element type of the first resulting collection

    A2

    the element type of the second resulting collection

    f

    the 'split function' mapping the elements of this mutable map to an scala.util.Either

    returns

    a pair of mutable maps: the first one made of those values returned by f that were wrapped in scala.util.Left, and the second one made of those wrapped in scala.util.Right.

    Definition Classes
    IterableOps
  131. def product[B >: (K, V)](implicit num: math.Numeric[B]): B

    Multiplies together the elements of this collection.

    Multiplies together the elements of this collection.

    The default implementation uses reduce for a known non-empty collection, foldLeft otherwise.

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the * operator.

    num

    an implicit parameter defining a set of numeric operations which includes the * operator to be used in forming the product.

    returns

    the product of all elements of this mutable map with respect to the * operator in num.

    Definition Classes
    IterableOnceOps
  132. def put(key: K, value: V): Option[V]

    Adds a new key/value pair to this map and optionally returns previously bound value.

    Adds a new key/value pair to this map and optionally returns previously bound value. If the map already contains a mapping for the key, it will be overridden by the new value.

    key

    the key to update

    value

    the new value

    returns

    an option value containing the value associated with the key before the put operation was executed, or None if key was not defined in the map before.

    Definition Classes
    MapOps
  133. def range(from: K, until: K): WithDefault[K, V]

    Creates a ranged projection of this collection with both a lower-bound and an upper-bound.

    Creates a ranged projection of this collection with both a lower-bound and an upper-bound.

    from

    The lower-bound (inclusive) of the ranged projection.

    until

    The upper-bound (exclusive) of the ranged projection.

    Definition Classes
    SortedOps
  134. def rangeFrom(from: K): WithDefault[K, V]

    Creates a ranged projection of this collection with no upper-bound.

    Creates a ranged projection of this collection with no upper-bound.

    from

    The lower-bound (inclusive) of the ranged projection.

    Definition Classes
    SortedOps
  135. def rangeImpl(from: Option[K], until: Option[K]): WithDefault[K, V]

    Creates a ranged projection of this collection.

    Creates a ranged projection of this collection. Any mutations in the ranged projection will update this collection and vice versa.

    Note: keys are not guaranteed to be consistent between this collection and the projection. This is the case for buffers where indexing is relative to the projection.

    from

    The lower-bound (inclusive) of the ranged projection. None if there is no lower bound.

    until

    The upper-bound (exclusive) of the ranged projection. None if there is no upper bound.

    Definition Classes
    WithDefaultSortedOps
  136. def rangeTo(to: K): WithDefault[K, V]

    Create a range projection of this collection with no lower-bound.

    Create a range projection of this collection with no lower-bound.

    to

    The upper-bound (inclusive) of the ranged projection.

    Definition Classes
    SortedMapOpsSortedOps
  137. def rangeUntil(until: K): WithDefault[K, V]

    Creates a ranged projection of this collection with no lower-bound.

    Creates a ranged projection of this collection with no lower-bound.

    until

    The upper-bound (exclusive) of the ranged projection.

    Definition Classes
    SortedOps
  138. def reduce[B >: (K, V)](op: (B, B) => B): B

    Applies the given binary operator op to all elements of this mutable map.

    Applies the given binary operator op to all elements of this mutable map.

    For each application of the operator, each operand is either an element of this mutable map or another such application of the operator. The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation.

    If this collection is ordered, then for any application of the operator, the element(s) appearing in the left operand will precede those in the right.

    Note: might return different results for different runs, unless either of the following conditions is met: (1) the operator is associative, and the underlying collection type is ordered; or (2) the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The type parameter for the binary operator, a supertype of A.

    op

    A binary operator; must be associative for the result to always be the same across runs.

    returns

    The result of applying op between all the elements if the mutable map is nonempty.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this mutable map is empty.

  139. def reduceLeft[B >: (K, V)](op: (B, (K, V)) => B): B

    Applies the given binary operator op to all elements of this mutable map, going left to right.

    Applies the given binary operator op to all elements of this mutable map, going left to right.

    "Going left to right" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this mutable map, the result is op( op( op( ... op(x1, x2) ... ), xn-1), xn).

    If this collection is not ordered, then for each application of the operator, each right operand is an element. In addition, the leftmost operand is the first element of this mutable map and each other left operand is itself an application of the operator. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of applying op to all elements of this mutable map, going left to right.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this mutable map is empty.

  140. def reduceLeftOption[B >: (K, V)](op: (B, (K, V)) => B): Option[B]

    If this mutable map is nonempty, reduces it with the given binary operator op, going left to right.

    If this mutable map is nonempty, reduces it with the given binary operator op, going left to right.

    The behavior is the same as reduceLeft except that the value is None if the mutable map is empty. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of reducing this mutable map with op going left to right if the mutable map is nonempty, inside a Some, and None otherwise.

    Definition Classes
    IterableOnceOps
  141. def reduceOption[B >: (K, V)](op: (B, B) => B): Option[B]

    If this mutable map is nonempty, reduces it with the given binary operator op.

    If this mutable map is nonempty, reduces it with the given binary operator op.

    The behavior is the same as reduce except that the value is None if the mutable map is empty. The order of applications of the operator is unspecified and may be nondeterministic. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless either of the following conditions is met: (1) the operator is associative, and the underlying collection type is ordered; or (2) the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    A type parameter for the binary operator, a supertype of A.

    op

    A binary operator; must be associative for the result to always be the same across runs.

    returns

    The result of reducing this mutable map with op if the mutable map is nonempty, inside a Some, and None otherwise.

    Definition Classes
    IterableOnceOps
  142. def reduceRight[B >: (K, V)](op: ((K, V), B) => B): B

    Applies the given binary operator op to all elements of this mutable map, going right to left.

    Applies the given binary operator op to all elements of this mutable map, going right to left.

    "Going right to left" only makes sense if this collection is ordered: then if x1, x2, ..., xn are the elements of this mutable map, the result is op(x1, op(x2, op( ... op(xn-1, xn) ... ))).

    If this collection is not ordered, then for each application of the operator, each left operand is an element. In addition, the rightmost operand is the last element of this mutable map and each other right operand is itself an application of the operator. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of applying op to all elements of this mutable map, going right to left.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this mutable map is empty.

  143. def reduceRightOption[B >: (K, V)](op: ((K, V), B) => B): Option[B]

    If this mutable map is nonempty, reduces it with the given binary operator op, going right to left.

    If this mutable map is nonempty, reduces it with the given binary operator op, going right to left.

    The behavior is the same as reduceRight except that the value is None if the mutable map is empty. Each element appears exactly once in the computation.

    Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator, a supertype of A.

    op

    A binary operator.

    returns

    The result of reducing this mutable map with op going right to left if the mutable map is nonempty, inside a Some, and None otherwise.

    Definition Classes
    IterableOnceOps
  144. def remove(key: K): Option[V]

    Removes a key from this map, returning the value associated previously with that key as an option.

    Removes a key from this map, returning the value associated previously with that key as an option.

    key

    the key to be removed

    returns

    an option value containing the value associated previously with key, or None if key was not defined in the map before.

    Definition Classes
    MapOps
  145. def result(): WithDefault[K, V]

    Result collection consisting of all elements appended so far.

    Result collection consisting of all elements appended so far.

    Definition Classes
    MapOpsBuilder
  146. def reversed: collection.Iterable[(K, V)]
    Attributes
    protected
    Definition Classes
    IterableOnceOps
  147. def runWith[U](action: (V) => U): (K) => Boolean

    Composes this partial function with an action function which gets applied to results of this partial function.

    Composes this partial function with an action function which gets applied to results of this partial function. The action function is invoked only for its side effects; its result is ignored.

    Note that expression pf.runWith(action)(x) is equivalent to

    if(pf isDefinedAt x) { action(pf(x)); true } else false

    except that runWith is implemented via applyOrElse and thus potentially more efficient. Using runWith avoids double evaluation of pattern matchers and guards for partial function literals.

    action

    the action function

    returns

    a function which maps arguments x to isDefinedAt(x). The resulting function runs action(this(x)) where this is defined.

    Definition Classes
    PartialFunction
    See also

    applyOrElse.

  148. def scan[B >: (K, V)](z: B)(op: (B, B) => B): Iterable[B]

    Computes a prefix scan of the elements of the collection.

    Computes a prefix scan of the elements of the collection.

    Note: The neutral element z may be applied more than once.

    B

    element type of the resulting collection

    z

    neutral element for the operator op

    op

    the associative operator for the scan

    returns

    a new mutable map containing the prefix scan of the elements in this mutable map

    Definition Classes
    IterableOps
  149. def scanLeft[B](z: B)(op: (B, (K, V)) => B): Iterable[B]

    Produces a mutable map containing cumulative results of applying the operator going left to right, including the initial value.

    Produces a mutable map containing cumulative results of applying the operator going left to right, including the initial value.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    B

    the type of the elements in the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    returns

    collection with intermediate results

    Definition Classes
    IterableOpsIterableOnceOps
  150. def scanRight[B](z: B)(op: ((K, V), B) => B): Iterable[B]

    Produces a collection containing cumulative results of applying the operator going right to left.

    Produces a collection containing cumulative results of applying the operator going right to left. The head of the collection is the last cumulative result.

    Note: will not terminate for infinite-sized collections.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    Example:

    List(1, 2, 3, 4).scanRight(0)(_ + _) == List(10, 9, 7, 4, 0)
    B

    the type of the elements in the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    returns

    collection with intermediate results

    Definition Classes
    IterableOps
  151. def size: Int

    The size of this mutable map.

    The size of this mutable map.

    Note: will not terminate for infinite-sized collections.

    returns

    the number of elements in this mutable map.

    Definition Classes
    IterableOnceOps
  152. def sizeCompare(that: collection.Iterable[_]): Int

    Compares the size of this mutable map to the size of another Iterable.

    Compares the size of this mutable map to the size of another Iterable.

    that

    the Iterable whose size is compared with this mutable map's size.

    returns

    A value x where

    x <  0       if this.size <  that.size
    x == 0       if this.size == that.size
    x >  0       if this.size >  that.size

    The method as implemented here does not call size directly; its running time is O(this.size min that.size) instead of O(this.size + that.size). The method should be overridden if computing size is cheap and knownSize returns -1.

    Definition Classes
    IterableOps
  153. def sizeCompare(otherSize: Int): Int

    Compares the size of this mutable map to a test value.

    Compares the size of this mutable map to a test value.

    otherSize

    the test value that gets compared with the size.

    returns

    A value x where

    x <  0       if this.size <  otherSize
    x == 0       if this.size == otherSize
    x >  0       if this.size >  otherSize

    The method as implemented here does not call size directly; its running time is O(size min otherSize) instead of O(size). The method should be overridden if computing size is cheap and knownSize returns -1.

    Definition Classes
    IterableOps
    See also

    sizeIs

  154. final def sizeHint(coll: IterableOnce[_], delta: Int = 0): Unit

    Gives a hint that the result of this builder is expected to have the same size as the given collection, plus some delta.

    Gives a hint that the result of this builder is expected to have the same size as the given collection, plus some delta.

    This method provides a hint only if the collection has a known size, as specified by the following pseudocode:

    if (coll.knownSize != -1)
      if (coll.knownSize + delta <= 0) sizeHint(0)
      else sizeHint(coll.knownSize + delta)

    If the delta is negative and the result size is known to be negative, then the size hint is issued at zero.

    Some builder classes will optimize their representation based on the hint. However, builder implementations are required to work correctly even if the hint is wrong, i.e., if a different number of elements is added.

    coll

    the collection which serves as a hint for the result's size.

    delta

    a correction to add to the coll.size to produce the size hint (zero if omitted).

    Definition Classes
    Builder
  155. def sizeHint(size: Int): Unit

    Gives a hint how many elements are expected to be added in total by the time result is called.

    Gives a hint how many elements are expected to be added in total by the time result is called.

    Some builder classes will optimize their representation based on the hint. However, builder implementations are required to work correctly even if the hint is wrong, e.g., a different number of elements is added, or the hint is out of range.

    The default implementation simply ignores the hint.

    size

    the hint how many elements will be added.

    Definition Classes
    Builder
  156. final def sizeHintBounded(size: Int, boundingColl: collection.Iterable[_]): Unit

    Gives a hint how many elements are expected to be added when the next result is called, together with an upper bound given by the size of some other collection.

    Gives a hint how many elements are expected to be added when the next result is called, together with an upper bound given by the size of some other collection. Some builder classes will optimize their representation based on the hint. However, builder implementations are still required to work correctly even if the hint is wrong, i.e. a different number of elements is added.

    size

    the hint how many elements will be added.

    boundingColl

    the bounding collection. If it is an IndexedSeqLike, then sizes larger than collection's size are reduced.

    Definition Classes
    Builder
  157. final def sizeIs: SizeCompareOps

    Returns a value class containing operations for comparing the size of this mutable map to a test value.

    Returns a value class containing operations for comparing the size of this mutable map to a test value.

    These operations are implemented in terms of sizeCompare(Int), and allow the following more readable usages:

    this.sizeIs < size     // this.sizeCompare(size) < 0
    this.sizeIs <= size    // this.sizeCompare(size) <= 0
    this.sizeIs == size    // this.sizeCompare(size) == 0
    this.sizeIs != size    // this.sizeCompare(size) != 0
    this.sizeIs >= size    // this.sizeCompare(size) >= 0
    this.sizeIs > size     // this.sizeCompare(size) > 0
    Definition Classes
    IterableOps
    Annotations
    @inline()
  158. def slice(from: Int, until: Int): WithDefault[K, V]

    Selects an interval of elements.

    Selects an interval of elements. The returned mutable map is made up of all elements x which satisfy the invariant:

    from <= indexOf(x) < until

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    from

    the lowest index to include from this mutable map.

    until

    the lowest index to EXCLUDE from this mutable map.

    returns

    a mutable map containing the elements greater than or equal to index from extending up to (but not including) index until of this mutable map.

    Definition Classes
    IterableOpsIterableOnceOps
  159. def sliding(size: Int, step: Int): Iterator[WithDefault[K, V]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    The returned iterator will be empty when called on an empty collection. The last element the iterator produces may be smaller than the window size when the original collection isn't exhausted by the window before it and its last element isn't skipped by the step before it.

    size

    the number of elements per group

    step

    the distance between the first elements of successive groups

    returns

    An iterator producing mutable maps of size size, except the last element (which may be the only element) will be smaller if there are fewer than size elements remaining to be grouped.

    Definition Classes
    IterableOps
    Examples:
    1. List(1, 2, 3, 4, 5).sliding(2, 2) = Iterator(List(1, 2), List(3, 4), List(5))

    2. ,
    3. List(1, 2, 3, 4, 5, 6).sliding(2, 3) = Iterator(List(1, 2), List(4, 5))

    See also

    scala.collection.Iterator, method sliding

  160. def sliding(size: Int): Iterator[WithDefault[K, V]]

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped).

    An empty collection returns an empty iterator, and a non-empty collection containing fewer elements than the window size returns an iterator that will produce the original collection as its only element.

    size

    the number of elements per group

    returns

    An iterator producing mutable maps of size size, except for a non-empty collection with less than size elements, which returns an iterator that produces the source collection itself as its only element.

    Definition Classes
    IterableOps
    Examples:
    1. List().sliding(2) = empty iterator

    2. ,
    3. List(1).sliding(2) = Iterator(List(1))

    4. ,
    5. List(1, 2).sliding(2) = Iterator(List(1, 2))

    6. ,
    7. List(1, 2, 3).sliding(2) = Iterator(List(1, 2), List(2, 3))

    See also

    scala.collection.Iterator, method sliding

  161. def sortedMapFactory: SortedMapFactory[SortedMap]

    The companion object of this sorted map, providing various factory methods.

    The companion object of this sorted map, providing various factory methods.

    Definition Classes
    WithDefaultSortedMapSortedMapSortedMapOps
    Note

    When implementing a custom collection type and refining CC to the new type, this method needs to be overridden to return a factory for the new type (the compiler will issue an error otherwise).

  162. final def sortedMapFromIterable[K2, V2](it: collection.Iterable[(K2, V2)])(implicit ordering: Ordering[K2]): SortedMap[K2, V2]

    Similar to mapFromIterable, but returns a SortedMap collection type.

    Similar to mapFromIterable, but returns a SortedMap collection type. Note that the return type is now CC[K2, V2].

    Attributes
    protected
    Definition Classes
    SortedMapOps
    Annotations
    @inline()
  163. def span(p: ((K, V)) => Boolean): (WithDefault[K, V], WithDefault[K, V])

    Splits this mutable map into a prefix/suffix pair according to a predicate.

    Splits this mutable map into a prefix/suffix pair according to a predicate.

    Note: c span p is equivalent to (but possibly more efficient than) (c takeWhile p, c dropWhile p), provided the evaluation of the predicate p does not cause any side-effects.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the test predicate

    returns

    a pair consisting of the longest prefix of this mutable map whose elements all satisfy p, and the rest of this mutable map.

    Definition Classes
    IterableOpsIterableOnceOps
  164. def splitAt(n: Int): (WithDefault[K, V], WithDefault[K, V])

    Splits this mutable map into a prefix/suffix pair at a given position.

    Splits this mutable map into a prefix/suffix pair at a given position.

    Note: c splitAt n is equivalent to (but possibly more efficient than) (c take n, c drop n).

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the position at which to split.

    returns

    a pair of mutable maps consisting of the first n elements of this mutable map, and the other elements.

    Definition Classes
    IterableOpsIterableOnceOps
  165. def stepper[S <: Stepper[_]](implicit shape: StepperShape[(K, V), S]): S

    Returns a scala.collection.Stepper for the elements of this collection.

    Returns a scala.collection.Stepper for the elements of this collection.

    The Stepper enables creating a Java stream to operate on the collection, see scala.jdk.StreamConverters. For collections holding primitive values, the Stepper can be used as an iterator which doesn't box the elements.

    The implicit scala.collection.StepperShape parameter defines the resulting Stepper type according to the element type of this collection.

    Note that this method is overridden in subclasses and the return type is refined to S with EfficientSplit, for example scala.collection.IndexedSeqOps.stepper. For Steppers marked with scala.collection.Stepper.EfficientSplit, the converters in scala.jdk.StreamConverters allow creating parallel streams, whereas bare Steppers can be converted only to sequential streams.

    Definition Classes
    IterableOnce
  166. def stringPrefix: String
    Attributes
    protected[this]
    Definition Classes
    SortedMapMapIterable
    Annotations
    @nowarn()
  167. def subtractAll(xs: IterableOnce[K]): WithDefault.this.type

    Removes all elements produced by an iterator from this mutable map.

    Removes all elements produced by an iterator from this mutable map.

    xs

    the iterator producing the elements to remove.

    returns

    the mutable map itself

    Definition Classes
    Shrinkable
  168. def subtractOne(elem: K): WithDefault.this.type

    Removes a single element from this mutable map.

    Removes a single element from this mutable map.

    elem

    the element to remove.

    returns

    the mutable map itself

    Definition Classes
    WithDefaultWithDefaultShrinkable
  169. def sum[B >: (K, V)](implicit num: math.Numeric[B]): B

    Sums the elements of this collection.

    Sums the elements of this collection.

    The default implementation uses reduce for a known non-empty collection, foldLeft otherwise.

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the + operator.

    num

    an implicit parameter defining a set of numeric operations which includes the + operator to be used in forming the sum.

    returns

    the sum of all elements of this mutable map with respect to the + operator in num.

    Definition Classes
    IterableOnceOps
  170. final def synchronized[T0](arg0: => T0): T0

    Executes the code in body with an exclusive lock on this.

    Executes the code in body with an exclusive lock on this.

    returns

    the result of body

    Definition Classes
    AnyRef
  171. def tail: WithDefault[K, V]

    The rest of the collection without its first element.

    The rest of the collection without its first element.

    Definition Classes
    IterableOps
  172. def tails: Iterator[WithDefault[K, V]]

    Iterates over the tails of this mutable map.

    Iterates over the tails of this mutable map. The first value will be this mutable map and the final one will be an empty mutable map, with the intervening values the results of successive applications of tail.

    returns

    an iterator over all the tails of this mutable map

    Definition Classes
    IterableOps
    Example:
    1. List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)

  173. def take(n: Int): WithDefault[K, V]

    Selects the first n elements.

    Selects the first n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to take from this mutable map.

    returns

    a mutable map consisting only of the first n elements of this mutable map, or else the whole mutable map, if it has less than n elements. If n is negative, returns an empty mutable map.

    Definition Classes
    IterableOpsIterableOnceOps
  174. def takeRight(n: Int): WithDefault[K, V]

    Selects the last n elements.

    Selects the last n elements.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    n

    the number of elements to take from this mutable map.

    returns

    a mutable map consisting only of the last n elements of this mutable map, or else the whole mutable map, if it has less than n elements. If n is negative, returns an empty mutable map.

    Definition Classes
    IterableOps
  175. def takeWhile(p: ((K, V)) => Boolean): WithDefault[K, V]

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    The predicate used to test elements.

    returns

    the longest prefix of this mutable map whose elements all satisfy the predicate p.

    Definition Classes
    IterableOpsIterableOnceOps
  176. def tapEach[U](f: ((K, V)) => U): WithDefault[K, V]

    Applies a side-effecting function to each element in this collection.

    Applies a side-effecting function to each element in this collection. Strict collections will apply f to their elements immediately, while lazy collections like Views and LazyLists will only apply f on each element if and when that element is evaluated, and each time that element is evaluated.

    U

    the return type of f

    f

    a function to apply to each element in this mutable map

    returns

    The same logical collection as this

    Definition Classes
    IterableOpsIterableOnceOps
  177. def to[C1](factory: Factory[(K, V), C1]): C1

    Given a collection factory factory, converts this mutable map to the appropriate representation for the current element type A.

    Given a collection factory factory, converts this mutable map to the appropriate representation for the current element type A. Example uses:

    xs.to(List)
    xs.to(ArrayBuffer)
    xs.to(BitSet) // for xs: Iterable[Int]
    Definition Classes
    IterableOnceOps
  178. def toArray[B >: (K, V)](implicit arg0: ClassTag[B]): Array[B]

    Converts this mutable map to an Array.

    Converts this mutable map to an Array.

    Implementation note: DO NOT call Array.from from this method.

    B

    The type of elements of the result, a supertype of A.

    returns

    This mutable map as an Array[B].

    Definition Classes
    IterableOnceOps
  179. final def toBuffer[B >: (K, V)]: Buffer[B]

    Converts this mutable map to a Buffer.

    Converts this mutable map to a Buffer.

    B

    The type of elements of the result, a supertype of A.

    returns

    This mutable map as a Buffer[B].

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  180. def toIndexedSeq: immutable.IndexedSeq[(K, V)]

    Converts this mutable map to an IndexedSeq.

    Converts this mutable map to an IndexedSeq.

    returns

    This mutable map as an IndexedSeq[A].

    Definition Classes
    IterableOnceOps
  181. def toList: immutable.List[(K, V)]

    Converts this mutable map to a List.

    Converts this mutable map to a List.

    returns

    This mutable map as a List[A].

    Definition Classes
    IterableOnceOps
  182. def toMap[K, V](implicit ev: <:<[(K, V), (K, V)]): immutable.Map[K, V]

    Converts this mutable map to a Map, given an implicit coercion from the mutable map's type to a key-value tuple.

    Converts this mutable map to a Map, given an implicit coercion from the mutable map's type to a key-value tuple.

    K

    The key type for the resulting map.

    V

    The value type for the resulting map.

    ev

    An implicit coercion from A to [K, V].

    returns

    This mutable map as a Map[K, V].

    Definition Classes
    IterableOnceOps
  183. def toSeq: immutable.Seq[(K, V)]

    returns

    This mutable map as a Seq[A]. This is equivalent to to(Seq) but might be faster.

    Definition Classes
    IterableOnceOps
  184. def toSet[B >: (K, V)]: immutable.Set[B]

    Converts this mutable map to a Set.

    Converts this mutable map to a Set.

    B

    The type of elements of the result, a supertype of A.

    returns

    This mutable map as a Set[B].

    Definition Classes
    IterableOnceOps
  185. def toString(): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

    a String representation of the object.

    Definition Classes
    MapFunction1Iterable → AnyRef → Any
  186. def toVector: immutable.Vector[(K, V)]

    Converts this mutable map to a Vector.

    Converts this mutable map to a Vector.

    returns

    This mutable map as a Vector[A].

    Definition Classes
    IterableOnceOps
  187. def transpose[B](implicit asIterable: ((K, V)) => collection.Iterable[B]): Iterable[Iterable[B]]

    Transposes this mutable map of iterable collections into a mutable map of mutable maps.

    Transposes this mutable map of iterable collections into a mutable map of mutable maps.

    The resulting collection's type will be guided by the static type of mutable map. For example:

    val xs = List(
               Set(1, 2, 3),
               Set(4, 5, 6)).transpose
    // xs == List(
    //         List(1, 4),
    //         List(2, 5),
    //         List(3, 6))
    
    val ys = Vector(
               List(1, 2, 3),
               List(4, 5, 6)).transpose
    // ys == Vector(
    //         Vector(1, 4),
    //         Vector(2, 5),
    //         Vector(3, 6))

    Note: Even when applied to a view or a lazy collection it will always force the elements.

    B

    the type of the elements of each iterable collection.

    asIterable

    an implicit conversion which asserts that the element type of this mutable map is an Iterable.

    returns

    a two-dimensional mutable map of mutable maps which has as nth row the nth column of this mutable map.

    Definition Classes
    IterableOps
    Exceptions thrown

    IllegalArgumentException if all collections in this mutable map are not of the same size.

  188. def unapply(a: K): Option[V]

    Tries to extract a B from an A in a pattern matching expression.

    Tries to extract a B from an A in a pattern matching expression.

    Definition Classes
    PartialFunction
  189. val underlying: Map[K, V]
    Definition Classes
    WithDefault
  190. def unlift: PartialFunction[K, B]

    Converts an optional function to a partial function.

    Converts an optional function to a partial function.

    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toUnliftOps[K, B] performed by method UnliftOps in scala.Function1.This conversion will take place only if V is a subclass of Option[B] (V <: Option[B]).
    Definition Classes
    UnliftOps
    Example:
    1. Unlike Function.unlift, this UnliftOps.unlift method can be used in extractors.

      val of: Int => Option[String] = { i =>
        if (i == 2) {
          Some("matched by an optional function")
        } else {
          None
        }
      }
      
      util.Random.nextInt(4) match {
        case of.unlift(m) => // Convert an optional function to a pattern
          println(m)
        case _ =>
          println("Not matched")
      }
  191. def unsorted: Map[K, V]
    Definition Classes
    SortedMapSortedMapOpsSortedMapSortedMapOps
  192. def unzip[A1, A2](implicit asPair: ((K, V)) => (A1, A2)): (Iterable[A1], Iterable[A2])

    Converts this mutable map of pairs into two collections of the first and second half of each pair.

    Converts this mutable map of pairs into two collections of the first and second half of each pair.

    val xs = `mutable.Map`(
               (1, "one"),
               (2, "two"),
               (3, "three")).unzip
    // xs == (`mutable.Map`(1, 2, 3),
    //        `mutable.Map`(one, two, three))
    A1

    the type of the first half of the element pairs

    A2

    the type of the second half of the element pairs

    asPair

    an implicit conversion which asserts that the element type of this mutable map is a pair.

    returns

    a pair of mutable maps, containing the first, respectively second half of each element pair of this mutable map.

    Definition Classes
    IterableOps
  193. def unzip3[A1, A2, A3](implicit asTriple: ((K, V)) => (A1, A2, A3)): (Iterable[A1], Iterable[A2], Iterable[A3])

    Converts this mutable map of triples into three collections of the first, second, and third element of each triple.

    Converts this mutable map of triples into three collections of the first, second, and third element of each triple.

    val xs = `mutable.Map`(
               (1, "one", '1'),
               (2, "two", '2'),
               (3, "three", '3')).unzip3
    // xs == (`mutable.Map`(1, 2, 3),
    //        `mutable.Map`(one, two, three),
    //        `mutable.Map`(1, 2, 3))
    A1

    the type of the first member of the element triples

    A2

    the type of the second member of the element triples

    A3

    the type of the third member of the element triples

    asTriple

    an implicit conversion which asserts that the element type of this mutable map is a triple.

    returns

    a triple of mutable maps, containing the first, second, respectively third member of each element triple of this mutable map.

    Definition Classes
    IterableOps
  194. def update(key: K, value: V): Unit

    Adds a new key/value pair to this map.

    Adds a new key/value pair to this map. If the map already contains a mapping for the key, it will be overridden by the new value.

    key

    The key to update

    value

    The new value

    Definition Classes
    MapOps
  195. def updateWith(key: K)(remappingFunction: (Option[V]) => Option[V]): Option[V]

    Update a mapping for the specified key and its current optionally mapped value (Some if there is current mapping, None if not).

    Update a mapping for the specified key and its current optionally mapped value (Some if there is current mapping, None if not).

    If the remapping function returns Some(v), the mapping is updated with the new value v. If the remapping function returns None, the mapping is removed (or remains absent if initially absent). If the function itself throws an exception, the exception is rethrown, and the current mapping is left unchanged.

    key

    the key value

    remappingFunction

    a function that receives current optionally mapped value and return a new mapping

    returns

    the new value associated with the specified key

    Definition Classes
    MapOps
  196. def valueStepper[S <: Stepper[_]](implicit shape: StepperShape[V, S]): S

    Returns a Stepper for the values of this map.

    Returns a Stepper for the values of this map. See method stepper.

    Definition Classes
    MapOps
  197. def values: collection.Iterable[V]

    Collects all values of this map in an iterable collection.

    Collects all values of this map in an iterable collection.

    returns

    the values of this map as an iterable.

    Definition Classes
    MapOps
  198. def valuesIterator: Iterator[V]

    Creates an iterator for all values in this map.

    Creates an iterator for all values in this map.

    returns

    an iterator over all values that are associated with some key in this map.

    Definition Classes
    MapOps
  199. def valuesIteratorFrom(start: K): Iterator[V]

    Creates an iterator over all the values contained in this map that are associated with a key greater than or equal to start according to the ordering of this map.

    Creates an iterator over all the values contained in this map that are associated with a key greater than or equal to start according to the ordering of this map. x.valuesIteratorFrom(y) is equivalent to but often more efficient than x.from(y).valuesIterator.

    start

    The lower bound (inclusive) on the keys to be returned

    Definition Classes
    SortedMapOps
  200. def view: MapView[K, V]

    A view over the elements of this collection.

    A view over the elements of this collection.

    Definition Classes
    MapOpsIterableOps
  201. final def wait(): Unit

    See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.

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  202. final def wait(arg0: Long, arg1: Int): Unit

    See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-

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  203. final def wait(arg0: Long): Unit

    See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.

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  204. def withDefault(d: (K) => V): SortedMap[K, V]

    The same sorted map with a given default function.

    The same sorted map with a given default function. Note: The default is only used for apply. Other methods like get, contains, iterator, keys, etc. are not affected by withDefault.

    Invoking transformer methods (e.g. map) will not preserve the default value.

    d

    the function mapping keys to values, used for non-present keys

    returns

    a wrapper of the map with a default value

    Definition Classes
    SortedMapMap
  205. def withDefaultValue(d: V): SortedMap[K, V]

    The same map with a given default value.

    The same map with a given default value. Note: The default is only used for apply. Other methods like get, contains, iterator, keys, etc. are not affected by withDefaultValue.

    Invoking transformer methods (e.g. map) will not preserve the default value.

    d

    default value used for non-present keys

    returns

    a wrapper of the map with a default value

    Definition Classes
    SortedMapMap
  206. def withFilter(p: ((K, V)) => Boolean): SortedMapOps.WithFilter[K, V, [x]Iterable[x], [x, y]Map[x, y], [x, y]SortedMap[x, y]]

    Creates a non-strict filter of this mutable map.

    Creates a non-strict filter of this mutable map.

    Note: the difference between c filter p and c withFilter p is that the former creates a new collection, whereas the latter only restricts the domain of subsequent map, flatMap, foreach, and withFilter operations.

    Note: might return different results for different runs, unless the underlying collection type is ordered.

    p

    the predicate used to test elements.

    returns

    an object of class WithFilter, which supports map, flatMap, foreach, and withFilter operations. All these operations apply to those elements of this mutable map which satisfy the predicate p.

    Definition Classes
    SortedMapFactoryDefaultsIterableOps
  207. def zip[B](that: IterableOnce[B]): Iterable[((K, V), B)]

    Returns a mutable map formed from this mutable map and another iterable collection by combining corresponding elements in pairs.

    Returns a mutable map formed from this mutable map and another iterable collection by combining corresponding elements in pairs. If one of the two collections is longer than the other, its remaining elements are ignored.

    B

    the type of the second half of the returned pairs

    that

    The iterable providing the second half of each result pair

    returns

    a new mutable map containing pairs consisting of corresponding elements of this mutable map and that. The length of the returned collection is the minimum of the lengths of this mutable map and that.

    Definition Classes
    IterableOps
  208. def zipAll[A1 >: (K, V), B](that: collection.Iterable[B], thisElem: A1, thatElem: B): Iterable[(A1, B)]

    Returns a mutable map formed from this mutable map and another iterable collection by combining corresponding elements in pairs.

    Returns a mutable map formed from this mutable map and another iterable collection by combining corresponding elements in pairs. If one of the two collections is shorter than the other, placeholder elements are used to extend the shorter collection to the length of the longer.

    that

    the iterable providing the second half of each result pair

    thisElem

    the element to be used to fill up the result if this mutable map is shorter than that.

    thatElem

    the element to be used to fill up the result if that is shorter than this mutable map.

    returns

    a new collection of type That containing pairs consisting of corresponding elements of this mutable map and that. The length of the returned collection is the maximum of the lengths of this mutable map and that. If this mutable map is shorter than that, thisElem values are used to pad the result. If that is shorter than this mutable map, thatElem values are used to pad the result.

    Definition Classes
    IterableOps
  209. def zipWithIndex: Iterable[((K, V), Int)]

    Zips this mutable map with its indices.

    Zips this mutable map with its indices.

    returns

    A new mutable map containing pairs consisting of all elements of this mutable map paired with their index. Indices start at 0.

    Definition Classes
    IterableOpsIterableOnceOps
    Example:
    1. List("a", "b", "c").zipWithIndex == List(("a", 0), ("b", 1), ("c", 2))

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Deprecated Value Members

  1. def +[V1 >: V](elem1: (K, V1), elem2: (K, V1), elems: (K, V1)*): SortedMap[K, V1]
    Definition Classes
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  2. def +[V1 >: V](kv: (K, V1)): SortedMap[K, V1]
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    (Since version 2.13.0) Consider requiring an immutable Map or fall back to Map.concat

  3. def ++:[V1 >: V](that: IterableOnce[(K, V1)]): Map[K, V1]
    Definition Classes
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    (Since version 2.13.0) Use ++ instead of ++: for collections of type Iterable

  4. def ++:[B >: (K, V)](that: IterableOnce[B]): Iterable[B]
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  5. final def +=(elem1: (K, V), elem2: (K, V), elems: (K, V)*): WithDefault.this.type

    Adds two or more elements to this mutable map.

    Adds two or more elements to this mutable map.

    elem1

    the first element to add.

    elem2

    the second element to add.

    elems

    the remaining elements to add.

    returns

    the mutable map itself

    Definition Classes
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    (Since version 2.13.0) Use ++= aka addAll instead of varargs +=; infix operations with an operand of multiple args will be deprecated

  6. final def -(key1: K, key2: K, keys: K*): WithDefault[K, V]
    Definition Classes
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    (Since version 2.13.0) Use -- or removeAll on an immutable Map

  7. final def -(key: K): WithDefault[K, V]
    Definition Classes
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    @deprecated
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    (Since version 2.13.0) Use - or remove on an immutable Map

  8. def --(keys: IterableOnce[K]): WithDefault[K, V]
    Definition Classes
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    Deprecated

    (Since version 2.13.0) Consider requiring an immutable Map.

  9. def -=(elem1: K, elem2: K, elems: K*): WithDefault.this.type

    Removes two or more elements from this mutable map.

    Removes two or more elements from this mutable map.

    elem1

    the first element to remove.

    elem2

    the second element to remove.

    elems

    the remaining elements to remove.

    returns

    the mutable map itself

    Definition Classes
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  10. def /:[B](z: B)(op: (B, (K, V)) => B): B
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  11. final def /:[B](z: B)(op: (B, (K, V)) => B): B
    Definition Classes
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  12. def :\[B](z: B)(op: ((K, V), B) => B): B
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  13. final def :\[B](z: B)(op: ((K, V), B) => B): B
    Definition Classes
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    Deprecated

    (Since version 2.13.0) Use foldRight instead of :\

  14. def aggregate[B](z: => B)(seqop: (B, (K, V)) => B, combop: (B, B) => B): B

    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

    Since this method degenerates to foldLeft for sequential (non-parallel) collections, where the combining operation is ignored, it is advisable to prefer foldLeft for that case.

    For parallel collections, use the aggregate method specified by scala.collection.parallel.ParIterableLike.

    B

    the result type, produced by seqop, combop, and by this function as a final result.

    z

    the start value, a neutral element for seqop.

    seqop

    the binary operator used to accumulate the result.

    combop

    an associative operator for combining sequential results, unused for sequential collections.

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) For sequential collections, prefer foldLeft(z)(seqop). For parallel collections, use ParIterableLike#aggregate.

  15. def collectFirst[B](f: PartialFunction[(K, V), B]): Option[B]
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  16. def companion: IterableFactory[[_]Iterable[_]]
    Definition Classes
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    @deprecated @deprecatedOverriding() @inline()
    Deprecated

    (Since version 2.13.0) Use iterableFactory instead

  17. def compare(k0: K, k1: K): Int

    Comparison function that orders keys.

    Comparison function that orders keys.

    Definition Classes
    SortedOps
    Annotations
    @deprecated @deprecatedOverriding() @inline()
    Deprecated

    (Since version 2.13.0) Use ordering.compare instead

  18. def copyToBuffer(dest: Buffer[(K, V)]): Unit
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  19. final def copyToBuffer[B >: (K, V)](dest: Buffer[B]): Unit
    Definition Classes
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    (Since version 2.13.0) Use dest ++= coll instead

  20. def count(f: ((K, V)) => Boolean): Int
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  21. def exists(f: ((K, V)) => Boolean): Boolean
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  22. def filter(f: ((K, V)) => Boolean): Iterator[(K, V)]
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  23. def filterKeys(p: (K) => Boolean): MapView[K, V]

    Filters this map by retaining only keys satisfying a predicate.

    Filters this map by retaining only keys satisfying a predicate.

    p

    the predicate used to test keys

    returns

    an immutable map consisting only of those key value pairs of this map where the key satisfies the predicate p. The resulting map wraps the original map without copying any elements.

    Definition Classes
    MapOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .view.filterKeys(f). A future version will include a strict version of this method (for now, .view.filterKeys(p).toMap).

  24. def find(p: ((K, V)) => Boolean): Option[(K, V)]
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  25. def flatMap[B](f: ((K, V)) => IterableOnce[B]): IterableOnce[B]
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    (Since version 2.13.0) Use .iterator.flatMap instead or consider requiring an Iterable

  26. def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1
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  27. def foldLeft[B](z: B)(op: (B, (K, V)) => B): B
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  28. def foldRight[B](z: B)(op: ((K, V), B) => B): B
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  29. def forall(f: ((K, V)) => Boolean): Boolean
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  30. def foreach[U](f: ((K, V)) => U): Unit
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  31. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toStringFormat[WithDefault[K, V]] performed by method StringFormat in scala.Predef.
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    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  32. final def from(from: K): WithDefault[K, V]

    Creates a ranged projection of this collection with no upper-bound.

    Creates a ranged projection of this collection with no upper-bound.

    from

    The lower-bound (inclusive) of the ranged projection.

    Definition Classes
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    Annotations
    @deprecated
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    (Since version 2.13.0) Use rangeFrom

  33. def hasDefiniteSize: Boolean

    Tests whether this mutable map is known to have a finite size.

    Tests whether this mutable map is known to have a finite size. All strict collections are known to have finite size. For a non-strict collection such as Stream, the predicate returns true if all elements have been computed. It returns false if the stream is not yet evaluated to the end. Non-empty Iterators usually return false even if they were created from a collection with a known finite size.

    Note: many collection methods will not work on collections of infinite sizes. The typical failure mode is an infinite loop. These methods always attempt a traversal without checking first that hasDefiniteSize returns true. However, checking hasDefiniteSize can provide an assurance that size is well-defined and non-termination is not a concern.

    returns

    true if this collection is known to have finite size, false otherwise.

    Definition Classes
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    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Check .knownSize instead of .hasDefiniteSize for more actionable information (see scaladoc for details)

    See also

    method knownSize for a more useful alternative

  34. def isEmpty: Boolean
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  35. def map[B](f: ((K, V)) => B): IterableOnce[B]
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  36. def mapValues[W](f: (V) => W): MapView[K, W]

    Transforms this map by applying a function to every retrieved value.

    Transforms this map by applying a function to every retrieved value.

    f

    the function used to transform values of this map.

    returns

    a map view which maps every key of this map to f(this(key)). The resulting map wraps the original map without copying any elements.

    Definition Classes
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    Annotations
    @deprecated
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    (Since version 2.13.0) Use .view.mapValues(f). A future version will include a strict version of this method (for now, .view.mapValues(f).toMap).

  37. def max(implicit ord: math.Ordering[(K, V)]): (K, V)
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  38. def maxBy[B](f: ((K, V)) => B)(implicit cmp: math.Ordering[B]): (K, V)
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  39. def min(implicit ord: math.Ordering[(K, V)]): (K, V)
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  40. def minBy[B](f: ((K, V)) => B)(implicit cmp: math.Ordering[B]): (K, V)
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  41. def mkString: String
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  42. def mkString(sep: String): String
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  43. def mkString(start: String, sep: String, end: String): String
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  44. def nonEmpty: Boolean
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  45. def product(implicit num: math.Numeric[(K, V)]): (K, V)
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  46. def reduce(f: ((K, V), (K, V)) => (K, V)): (K, V)
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  47. def reduceLeft(f: ((K, V), (K, V)) => (K, V)): (K, V)
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  48. def reduceLeftOption(f: ((K, V), (K, V)) => (K, V)): Option[(K, V)]
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    (Since version 2.13.0) Use .iterator.reduceLeftOption(...) instead

  49. def reduceOption(f: ((K, V), (K, V)) => (K, V)): Option[(K, V)]
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  50. def reduceRight(f: ((K, V), (K, V)) => (K, V)): (K, V)
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  51. def reduceRightOption(f: ((K, V), (K, V)) => (K, V)): Option[(K, V)]
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  52. final def repr: WithDefault[K, V]
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    (Since version 2.13.0) Use coll instead of repr in a collection implementation, use the collection value itself from the outside

  53. final def retain(p: (K, V) => Boolean): WithDefault.this.type
    Definition Classes
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    (Since version 2.13.0) Use filterInPlace instead

  54. def sameElements[B >: A](that: IterableOnce[B]): Boolean
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    (Since version 2.13.0) Use .iterator.sameElements instead

  55. def seq: WithDefault.this.type
    Definition Classes
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    (Since version 2.13.0) Iterable.seq always returns the iterable itself

  56. def size: Int
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  57. def sum(implicit num: math.Numeric[(K, V)]): (K, V)
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  58. def to[C1](factory: Factory[(K, V), C1]): C1
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  59. final def to(to: K): WithDefault[K, V]

    Create a range projection of this collection with no lower-bound.

    Create a range projection of this collection with no lower-bound.

    to

    The upper-bound (inclusive) of the ranged projection.

    Definition Classes
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    (Since version 2.13.0) Use rangeTo

  60. def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]
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    (Since version 2.13.0) Use .iterator.toArray

  61. def toBuffer[B >: A]: Buffer[B]
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  62. def toIndexedSeq: collection.IndexedSeq[(K, V)]
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  63. final def toIterable: collection.Iterable[(K, V)]
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  64. final def toIterable: WithDefault.this.type

    returns

    This collection as an Iterable[A]. No new collection will be built if this is already an Iterable[A].

    Definition Classes
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    @deprecated
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    (Since version 2.13.7) toIterable is internal and will be made protected; its name is similar to toList or toSeq, but it doesn't copy non-immutable collections

  65. def toIterator: Iterator[(K, V)]
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    (Since version 2.13.0) Use .iterator instead

  66. final def toIterator: Iterator[(K, V)]
    Definition Classes
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    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator instead of .toIterator

  67. def toList: immutable.List[(K, V)]
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    (Since version 2.13.0) Use .iterator.to(List) instead

  68. def toMap[K, V](implicit ev: <:<[(K, V), (K, V)]): immutable.Map[K, V]
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    (Since version 2.13.0) Use .iterator.to(Map) instead

  69. def toSeq: immutable.Seq[(K, V)]
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  70. def toSet[B >: A]: immutable.Set[B]
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  71. def toStream: immutable.Stream[(K, V)]
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  72. final def toStream: immutable.Stream[(K, V)]
    Definition Classes
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    Deprecated

    (Since version 2.13.0) Use .to(LazyList) instead of .toStream

  73. final def toTraversable: collection.Traversable[(K, V)]
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  74. final def toTraversable: collection.Traversable[(K, V)]

    Converts this mutable map to an unspecified Iterable.

    Converts this mutable map to an unspecified Iterable. Will return the same collection if this instance is already Iterable.

    returns

    An Iterable containing all elements of this mutable map.

    Definition Classes
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    @deprecated
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    (Since version 2.13.0) toTraversable is internal and will be made protected; its name is similar to toList or toSeq, but it doesn't copy non-immutable collections

  75. def toVector: immutable.Vector[(K, V)]
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    (Since version 2.13.0) Use .iterator.to(Vector) instead

  76. final def transform(f: (K, V) => V): WithDefault.this.type
    Definition Classes
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    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use mapValuesInPlace instead

  77. final def until(until: K): WithDefault[K, V]

    Creates a ranged projection of this collection with no lower-bound.

    Creates a ranged projection of this collection with no lower-bound.

    until

    The upper-bound (exclusive) of the ranged projection.

    Definition Classes
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    @deprecated
    Deprecated

    (Since version 2.13.0) Use rangeUntil

  78. def updated[V1 >: V](key: K, value: V1): SortedMap[K, V1]
    Definition Classes
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    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use m.clone().addOne((k,v)) instead of m.updated(k, v)

  79. def view(from: Int, until: Int): View[(K, V)]

    A view over a slice of the elements of this collection.

    A view over a slice of the elements of this collection.

    Definition Classes
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    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .view.slice(from, until) instead of .view(from, until)

  80. def withFilter(f: ((K, V)) => Boolean): Iterator[(K, V)]
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    (Since version 2.13.0) Use .iterator.withFilter(...) instead

  81. def [B](y: B): (WithDefault[K, V], B)
    Implicit
    This member is added by an implicit conversion from WithDefault[K, V] toArrowAssoc[WithDefault[K, V]] performed by method ArrowAssoc in scala.Predef.This conversion will take place only if V is a subclass of Option[Nothing] (V <: Option[Nothing]).
    Definition Classes
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    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from SortedMap[K, V]

Inherited from SortedMapOps[K, V, SortedMap, WithDefault[K, V]]

Inherited from collection.SortedMap[K, V]

Inherited from SortedMapFactoryDefaults[K, V, [x, y]SortedMap[x, y], [x]Iterable[x], [x, y]Map[x, y]]

Inherited from collection.SortedMapOps[K, V, [X, Y]SortedMap[X, Y], WithDefault[K, V]]

Inherited from SortedOps[K, WithDefault[K, V]]

Inherited from Map.WithDefault[K, V]

Inherited from java.io.Serializable

Inherited from AbstractMap[K, V]

Inherited from Map[K, V]

Inherited from MapOps[K, V, Map, WithDefault[K, V]]

Inherited from Shrinkable[K]

Inherited from Builder[(K, V), WithDefault[K, V]]

Inherited from Growable[(K, V)]

Inherited from Clearable

Inherited from Cloneable[WithDefault[K, V]]

Inherited from java.lang.Cloneable

Inherited from Iterable[(K, V)]

Inherited from collection.AbstractMap[K, V]

Inherited from collection.Map[K, V]

Inherited from Equals

Inherited from MapFactoryDefaults[K, V, [x, y]Map[x, y], [x]Iterable[x]]

Inherited from collection.MapOps[K, V, [_, _]Map[_, _], WithDefault[K, V]]

Inherited from PartialFunction[K, V]

Inherited from (K) => V

Inherited from collection.AbstractIterable[(K, V)]

Inherited from collection.Iterable[(K, V)]

Inherited from IterableFactoryDefaults[(K, V), [x]Iterable[x]]

Inherited from IterableOps[(K, V), [_]Iterable[_], WithDefault[K, V]]

Inherited from IterableOnceOps[(K, V), [_]Iterable[_], WithDefault[K, V]]

Inherited from IterableOnce[(K, V)]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion UnliftOps fromWithDefault[K, V] to UnliftOps[K, B]

Inherited by implicit conversion iterableOnceExtensionMethods fromWithDefault[K, V] to IterableOnceExtensionMethods[(K, V)]

Inherited by implicit conversion any2stringadd fromWithDefault[K, V] to any2stringadd[WithDefault[K, V]]

Inherited by implicit conversion StringFormat fromWithDefault[K, V] to StringFormat[WithDefault[K, V]]

Inherited by implicit conversion Ensuring fromWithDefault[K, V] to Ensuring[WithDefault[K, V]]

Inherited by implicit conversion ArrowAssoc fromWithDefault[K, V] to ArrowAssoc[WithDefault[K, V]]

Ungrouped