TreeSeqMap

Companion object TreeSeqMap

final class TreeSeqMap[K, +V] extends AbstractMap[K, V] with SeqMap[K, V] with MapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]] with StrictOptimizedIterableOps[(K, V), Iterable, TreeSeqMap[K, V]] with StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]] with MapFactoryDefaults[K, V, TreeSeqMap, Iterable]

This class implements an immutable map that preserves order using a hash map for the key to value mapping to provide efficient lookup, and a tree for the ordering of the keys to provide efficient insertion/modification order traversal and destructuring.

By default insertion order (TreeSeqMap.OrderBy.Insertion) is used, but modification order (TreeSeqMap.OrderBy.Modification) can be used instead if so specified at creation.

The orderingBy(orderBy: TreeSeqMap.OrderBy): TreeSeqMap[K, V] method can be used to switch to the specified ordering for the returned map.

A key can be manually refreshed (i.e. placed at the end) via the refresh(key: K): TreeSeqMap[K, V] method (regardless of the ordering in use).

Internally, an ordinal counter is increased for each insertion/modification and then the current ordinal is used as key in the tree map. After 2³² insertions/modifications the entire map is copied (thus resetting the ordinal counter).

K: the type of the keys contained in this map.
V: the type of the values associated with the keys in this map.

Source: TreeSeqMap.scala
Version: 2.13
Since: 2.13

Linear Supertypes

StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]], collection.StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]], StrictOptimizedIterableOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]], SeqMap[K, V], collection.SeqMap[K, V], AbstractMap[K, V], Map[K, V], MapOps[K, V, [X, +Y]TreeSeqMap[X, Y], TreeSeqMap[K, V]], Iterable[(K, V)], collection.AbstractMap[K, V], collection.Map[K, V], Equals, MapFactoryDefaults[K, V, [x, y]TreeSeqMap[x, y], [x]Iterable[x]], collection.MapOps[K, V, [_, _]TreeSeqMap[_, _], TreeSeqMap[K, V]], PartialFunction[K, V], (K) => V, AbstractIterable[(K, V)], collection.Iterable[(K, V)], IterableFactoryDefaults[(K, V), [x]Iterable[x]], IterableOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]], IterableOnceOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]], IterableOnce[(K, V)], AnyRef, Any

Type Hierarchy

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By Inheritance

Inherited

TreeSeqMap
StrictOptimizedMapOps
StrictOptimizedMapOps
StrictOptimizedIterableOps
SeqMap
SeqMap
AbstractMap
Map
MapOps
Iterable
AbstractMap
Map
Equals
MapFactoryDefaults
MapOps
PartialFunction
Function1
AbstractIterable
Iterable
IterableFactoryDefaults
IterableOps
IterableOnceOps
IterableOnce
AnyRef
Any

Implicitly

by UnliftOps
by iterableOnceExtensionMethods
by any2stringadd
by StringFormat
by Ensuring
by ArrowAssoc

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Type Members

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
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
class ImmutableKeySet 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

Value Members

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
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
def +[V1 >: V](kv: (K, V1)): TreeSeqMap[K, V1]
Alias for updated
Alias for updated
V1
the type of the value in the key/value pair.
kv
the key/value pair.
returns
A new map with the new binding added to this map.
Definition Classes
MapOps → MapOps
def ++[V2 >: V](xs: IterableOnce[(K, V2)]): TreeSeqMap[K, V2]
Alias for concat
Alias for concat
Definition Classes
MapOps
final def ++[B >: (K, V)](suffix: IterableOnce[B]): Iterable[B]
Alias for concat
Alias for concat
Definition Classes
IterableOps
Annotations
@inline()
final def -(key: K): TreeSeqMap[K, V]
Alias for removed
Alias for removed
Definition Classes
MapOps
Annotations
@inline()
final def --(keys: IterableOnce[K]): TreeSeqMap[K, V]
Alias for removedAll
Alias for removedAll
Definition Classes
MapOps → MapOps
Annotations
@inline()
def ->[B](y: B): (TreeSeqMap[K, V], B)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toArrowAssoc[TreeSeqMap[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()
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
def addString(sb: mutable.StringBuilder, start: String, sep: String, end: String): mutable.StringBuilder
Appends all elements of this map to a string builder using start, end, and separator strings.
Appends all elements of this 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 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
MapOps → IterableOnceOps
final def addString(b: mutable.StringBuilder): mutable.StringBuilder
Appends all elements of this collection to a string builder.
Appends all elements of this collection to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this collection 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()
final def addString(b: mutable.StringBuilder, sep: String): mutable.StringBuilder
Appends all elements of this collection to a string builder using a separator string.
Appends all elements of this collection 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 collection, 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()
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. It is highly recommended to call applyOrElse instead of isDefinedAt / apply for efficiency.
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
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
PartialFunction → Function1
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
MapOps → Function1
Annotations
@throws(scala.this.throws.<init>$default$1[NoSuchElementException])
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
MapOps → PartialFunction
Since
2.10
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.
def canEqual(that: Any): Boolean
A method that should be called from every well-designed equals method that is open to be overridden in a subclass.
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
Map → Equals
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 immutable tree seq map. By default the string prefix is the simple name of the collection class immutable tree seq map.
Attributes
protected[this]
Definition Classes
TreeSeqMap → Iterable
def clone(): AnyRef
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.
Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.CloneNotSupportedException]) @native()
Note
not specified by SLS as a member of AnyRef
final def coll: TreeSeqMap.this.type
returns
This collection as a C.
Attributes
protected
Definition Classes
Iterable → IterableOps
def collect[K2, V2](pf: PartialFunction[(K, V), (K2, V2)]): TreeSeqMap[K2, V2]
Builds a new collection by applying a partial function to all elements of this immutable tree seq map on which the function is defined.
Builds a new collection by applying a partial function to all elements of this immutable tree seq map on which the function is defined.
K2
the key type of the returned immutable tree seq map.
V2
the value type of the returned immutable tree seq map.
pf
the partial function which filters and maps the immutable tree seq map.
returns
a new immutable tree seq 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
TreeSeqMap → StrictOptimizedMapOps → MapOps
def collect[B](pf: PartialFunction[(K, V), B]): Iterable[B]
Builds a new iterable collection by applying a partial function to all elements of this iterable collection on which the function is defined.
Builds a new iterable collection by applying a partial function to all elements of this iterable collection on which the function is defined.
B
the element type of the returned iterable collection.
pf
the partial function which filters and maps the iterable collection.
returns
a new iterable collection 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
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def collectFirst[B](pf: PartialFunction[(K, V), B]): Option[B]
Finds the first element of the collection for which the given partial function is defined, and applies the partial function to it.
Finds the first element of the collection 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)
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. It is highly recommended to call applyOrElse instead of isDefinedAt / apply for efficiency.
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
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()
def concat[V2 >: V](suffix: IterableOnce[(K, V2)]): TreeSeqMap[K, V2]
Returns a new immutable tree seq map containing the elements from the left hand operand followed by the elements from the right hand operand.
Returns a new immutable tree seq map containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the immutable tree seq map is the most specific superclass encompassing the element types of the two operands.
suffix
the traversable to append.
returns
a new immutable tree seq map which contains all elements of this immutable tree seq map followed by all elements of suffix.
Definition Classes
TreeSeqMap → StrictOptimizedMapOps → StrictOptimizedMapOps → MapOps
def concat[B >: (K, V)](suffix: IterableOnce[B]): Iterable[B]
Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand.
Returns a new iterable collection containing the elements from the left hand operand followed by the elements from the right hand operand. The element type of the iterable collection is the most specific superclass encompassing the element types of the two operands.
B
the element type of the returned collection.
suffix
the traversable to append.
returns
a new iterable collection which contains all elements of this iterable collection followed by all elements of suffix.
Definition Classes
IterableOps
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
TreeSeqMap → MapOps
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 collection.
Copying will stop once either all the elements of this collection 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. Note: will not terminate for infinite-sized collections.
def copyToArray[B >: (K, V)](xs: Array[B], start: 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 values of this collection.
Copying will stop once either all the elements of this collection 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 Note: will not terminate for infinite-sized collections.
Definition Classes
IterableOnceOps
def copyToArray[B >: (K, V)](xs: Array[B]): 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 values of this collection.
Copying will stop once either all the elements of this collection 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 Note: will not terminate for infinite-sized collections.
Definition Classes
IterableOnceOps
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.
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
def count(p: ((K, V)) => Boolean): Int
Counts the number of elements in the collection which satisfy a predicate.
Counts the number of elements in the collection which satisfy a predicate.
p
the predicate used to test elements.
returns
the number of elements satisfying the predicate p.
Definition Classes
IterableOnceOps
def default(key: K): V
Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses.
Defines the default value computation for the map, returned when a key is not found The method implemented here throws an exception, but it might be overridden in subclasses.
key
the given key value for which a binding is missing.
Definition Classes
MapOps
Annotations
@throws(scala.this.throws.<init>$default$1[NoSuchElementException])
Exceptions thrown
def drop(n: Int): TreeSeqMap[K, V]
Selects all elements except first n ones.
Selects all elements except 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 iterable collection.
returns
a iterable collection consisting of all elements of this iterable collection except the first n ones, or else the empty iterable collection, if this iterable collection has less than n elements. If n is negative, don't drop any elements.
Definition Classes
IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def dropRight(n: Int): TreeSeqMap[K, V]
The rest of the collection without its n last elements.
The rest of the collection without its n last elements. For linear, immutable collections this should avoid making a copy.
Note: Even when applied to a view or a lazy collection it will always force the elements.
n
the number of elements to drop from this iterable collection.
returns
a iterable collection consisting of all elements of this iterable collection except the last n ones, or else the empty iterable collection, if this iterable collection has less than n elements. If n is negative, don't drop any elements.
Definition Classes
StrictOptimizedIterableOps → IterableOps
def dropWhile(p: ((K, V)) => Boolean): TreeSeqMap[K, V]
Drops longest prefix of elements that satisfy a predicate.
Drops 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 suffix of this iterable collection whose first element does not satisfy the predicate p.
Definition Classes
IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
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 }
def empty: TreeSeqMap[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
MapFactoryDefaults → IterableOps
def ensuring(cond: (TreeSeqMap[K, V]) => Boolean, msg: => Any): TreeSeqMap[K, V]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toEnsuring[TreeSeqMap[K, V]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: (TreeSeqMap[K, V]) => Boolean): TreeSeqMap[K, V]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toEnsuring[TreeSeqMap[K, V]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean, msg: => Any): TreeSeqMap[K, V]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toEnsuring[TreeSeqMap[K, V]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
def ensuring(cond: Boolean): TreeSeqMap[K, V]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toEnsuring[TreeSeqMap[K, V]] performed by method Ensuring in scala.Predef.
Definition Classes
Ensuring
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
def equals(o: Any): Boolean
The universal equality method defined in AnyRef.
The universal equality method defined in AnyRef.
Definition Classes
Map → Equals → AnyRef → Any
def exists(p: ((K, V)) => Boolean): Boolean
Tests whether a predicate holds for at least one element of this collection.
Tests whether a predicate holds for at least one element of this collection.
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 collection, otherwise false
Definition Classes
IterableOnceOps
def filter(pred: ((K, V)) => Boolean): TreeSeqMap[K, V]
Selects all elements of this iterable collection which satisfy a predicate.
Selects all elements of this iterable collection which satisfy a predicate.
returns
a new iterator consisting of all elements of this iterable collection that satisfy the given predicate p. The order of the elements is preserved.
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
def filterImpl(pred: ((K, V)) => Boolean, isFlipped: Boolean): TreeSeqMap[K, V]
Attributes
protected[scala.collection]
Definition Classes
StrictOptimizedIterableOps
def filterNot(pred: ((K, V)) => Boolean): TreeSeqMap[K, V]
Selects all elements of this iterable collection which do not satisfy a predicate.
Selects all elements of this iterable collection which do not satisfy a predicate.
pred
the predicate used to test elements.
returns
a new iterable collection consisting of all elements of this iterable collection that do not satisfy the given predicate pred. Their order may not be preserved.
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
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[java.lang]
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.Throwable])
Note
not specified by SLS as a member of AnyRef
def find(p: ((K, V)) => Boolean): Option[(K, V)]
Finds the first element of the collection satisfying a predicate, if any.
Finds the first element of the collection 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 collection that satisfies p, or None if none exists.
Definition Classes
IterableOnceOps
def flatMap[K2, V2](f: ((K, V)) => IterableOnce[(K2, V2)]): TreeSeqMap[K2, V2]
Builds a new map by applying a function to all elements of this immutable tree seq map and using the elements of the resulting collections.
Builds a new map by applying a function to all elements of this immutable tree seq map and using the elements of the resulting collections.
f
the function to apply to each element.
returns
a new immutable tree seq map resulting from applying the given collection-valued function f to each element of this immutable tree seq map and concatenating the results.
Definition Classes
TreeSeqMap → StrictOptimizedMapOps → MapOps
def flatMap[B](f: ((K, V)) => IterableOnce[B]): Iterable[B]
Builds a new iterable collection by applying a function to all elements of this iterable collection and using the elements of the resulting collections.
Builds a new iterable collection by applying a function to all elements of this iterable collection 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 iterable collection. 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 iterable collection resulting from applying the given collection-valued function f to each element of this iterable collection and concatenating the results.
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def flatten[B](implicit toIterableOnce: ((K, V)) => IterableOnce[B]): Iterable[B]
Converts this iterable collection of traversable collections into a iterable collection formed by the elements of these traversable collections.
Converts this iterable collection of traversable collections into a iterable collection formed by the elements of these traversable collections.
The resulting collection's type will be guided by the type of iterable collection. 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 traversable collection.
returns
a new iterable collection resulting from concatenating all element iterable collections.
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def fold[A1 >: (K, V)](z: A1)(op: (A1, A1) => A1): A1
Folds the elements of this collection using the specified associative binary operator.
Folds the elements of this collection using the specified associative binary operator. The default implementation in IterableOnce is equivalent to foldLeft but may be overridden for more efficient traversal orders.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
Note: will not terminate for infinite-sized collections.
A1
a type parameter for the binary operator, a supertype of A.
z
a neutral element for the fold operation; may be added to the result an arbitrary number of times, and must not change the result (e.g., Nil for list concatenation, 0 for addition, or 1 for multiplication).
op
a binary operator that must be associative.
returns
the result of applying the fold operator op between all the elements and z, or z if this collection is empty.
Definition Classes
IterableOnceOps
def foldLeft[B](z: B)(op: (B, (K, V)) => B): B
Applies a binary operator to a start value and all elements of this collection, going left to right.
Applies a binary operator to a start value and all elements of this collection, going left to right.
Note: will not terminate for infinite-sized collections.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
z
the start value.
op
the binary operator.
returns
the result of inserting op between consecutive elements of this collection, going left to right with the start value z on the left:
```
op(...op(z, x_1), x_2, ..., x_n)
```
where x₁, ..., x_n are the elements of this collection. Returns z if this collection is empty.
Definition Classes
IterableOnceOps
def foldRight[B](z: B)(op: ((K, V), B) => B): B
Applies a binary operator to all elements of this collection and a start value, going right to left.
Applies a binary operator to all elements of this collection and a start value, going right to left.
Note: will not terminate for infinite-sized collections.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
z
the start value.
op
the binary operator.
returns
the result of inserting op between consecutive elements of this collection, going right to left with the start value z on the right:
```
op(x_1, op(x_2, ... op(x_n, z)...))
```
where x₁, ..., x_n are the elements of this collection. Returns z if this collection is empty.
Definition Classes
IterableOnceOps
def forall(p: ((K, V)) => Boolean): Boolean
Tests whether a predicate holds for all elements of this collection.
Tests whether a predicate holds for all elements of this collection.
Note: may not terminate for infinite-sized collections.
p
the predicate used to test elements.
returns
true if this collection is empty or the given predicate p holds for all elements of this collection, otherwise false.
Definition Classes
IterableOnceOps
def foreach[U](f: ((K, V)) => U): Unit
Apply f to each element for its side effects Note: [U] parameter needed to help scalac's type inference.
Apply f to each element for its side effects Note: [U] parameter needed to help scalac's type inference.
Definition Classes
IterableOnceOps
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
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 TreeSeqMap[K, V] toStringFormat[TreeSeqMap[K, V]] performed by method StringFormat in scala.Predef.
Definition Classes
StringFormat
Annotations
@inline()
def fromSpecific(coll: IterableOnce[(K, V)]): TreeSeqMap[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
MapFactoryDefaults → IterableOps
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 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.
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
TreeSeqMap → MapOps
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()
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
def groupBy[K](f: ((K, V)) => K): Map[K, TreeSeqMap[K, V]]
Partitions this iterable collection into a map of iterable collections according to some discriminator function.
Partitions this iterable collection into a map of iterable collections 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 iterable collections 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 iterable collection of those elements x for which f(x) equals k.
Definition Classes
IterableOps
def groupMap[K, B](key: ((K, V)) => K)(f: ((K, V)) => B): Map[K, Iterable[B]]
Partitions this iterable collection into a map of iterable collections according to a discriminator function key.
Partitions this iterable collection into a map of iterable collections 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
def groupMapReduce[K, B](key: ((K, V)) => K)(f: ((K, V)) => B)(reduce: (B, B) => B): Map[K, B]
Partitions this iterable collection into a map according to a discriminator function key.
Partitions this iterable collection into a map according to a discriminator function key. All the values that have the same discriminator are then transformed by the value 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
def grouped(size: Int): Iterator[TreeSeqMap[K, V]]
Partitions elements in fixed size iterable collections.
Partitions elements in fixed size iterable collections.
size
the number of elements per group
returns
An iterator producing iterable collections 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
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
def head: (K, V)
Selects the first element of this immutable tree seq map.
Selects the first element of this immutable tree seq map.
Note: might return different results for different runs, unless the underlying collection type is ordered.
returns
the first element of this immutable tree seq map.
Definition Classes
TreeSeqMap → IterableOps
Exceptions thrown
NoSuchElementException if the immutable tree seq map is empty.
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 immutable tree seq map if it is nonempty, None if it is empty.
Definition Classes
TreeSeqMap → IterableOps
def init: TreeSeqMap[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
TreeSeqMap → IterableOps
def inits: Iterator[TreeSeqMap[K, V]]
Iterates over the inits of this iterable collection.
Iterates over the inits of this iterable collection. The first value will be this iterable collection and the final one will be an empty iterable collection, 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 iterable collection
Definition Classes
IterableOps
Example:
1. List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)
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
MapOps → PartialFunction
def isEmpty: Boolean
Tests whether the immutable tree seq map is empty.
Tests whether the immutable tree seq map is empty.
Note: Implementations in subclasses that are not repeatedly traversable must take care not to consume any elements when isEmpty is called.
returns
true if the immutable tree seq map contains no elements, false otherwise.
Definition Classes
TreeSeqMap → IterableOnceOps
final def isInstanceOf[T0]: Boolean
Test whether the dynamic type of the receiver object is T0.
Test whether the dynamic type of the receiver object is T0.
Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. 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 specified type.
returns
true if the receiver object is an instance of erasure of type T0; false otherwise.
Definition Classes
Any
def isTraversableAgain: Boolean
Tests whether this iterable collection can be repeatedly traversed.
Tests whether this iterable collection 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
IterableOps → IterableOnceOps
def iterableFactory: IterableFactory[Iterable]
The companion object of this immutable collection, providing various factory methods.
The companion object of this immutable collection, providing various factory methods.
Definition Classes
Iterable → Iterable → IterableOps
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).
def iterator: Iterator[(K, V)]
Iterator can be used only once
Iterator can be used only once
Definition Classes
TreeSeqMap → IterableOnce
def keySet: Set[K]
Collects all keys of this map in a set.
Collects all keys of this map in a set.
returns
a set containing all keys of this map.
Definition Classes
MapOps → MapOps
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
def keys: collection.Iterable[K]
Collects all keys of this map in an iterable collection.
Collects all keys of this map in an iterable collection.
returns
the keys of this map as an iterable.
Definition Classes
MapOps
def keysIterator: Iterator[K]
Creates an iterator for all keys.
Creates an iterator for all keys.
returns
an iterator over all keys.
Definition Classes
TreeSeqMap → MapOps
def knownSize: Int
returns
The number of elements in this immutable tree seq map, if it can be cheaply computed, -1 otherwise. Cheaply usually means: Not requiring a collection traversal.
Definition Classes
TreeSeqMap → IterableOnce
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 immutable tree seq map.
Definition Classes
TreeSeqMap → IterableOps
Exceptions thrown
NoSuchElementException If the immutable tree seq map is empty.
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 immutable tree seq map$ if it is nonempty, None if it is empty.
Definition Classes
TreeSeqMap → IterableOps
def lazyZip[B](that: collection.Iterable[B]): LazyZip2[(K, V), B, TreeSeqMap.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
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
def map[K2, V2](f: ((K, V)) => (K2, V2)): TreeSeqMap[K2, V2]
Builds a new map by applying a function to all elements of this immutable tree seq map.
Builds a new map by applying a function to all elements of this immutable tree seq map.
f
the function to apply to each element.
returns
a new immutable tree seq map resulting from applying the given function f to each element of this immutable tree seq map and collecting the results.
Definition Classes
TreeSeqMap → StrictOptimizedMapOps → MapOps
def map[B](f: ((K, V)) => B): Iterable[B]
Builds a new iterable collection by applying a function to all elements of this iterable collection.
Builds a new iterable collection by applying a function to all elements of this iterable collection.
B
the element type of the returned iterable collection.
f
the function to apply to each element.
returns
a new iterable collection resulting from applying the given function f to each element of this iterable collection and collecting the results.
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def mapFactory: MapFactory[TreeSeqMap]
The companion object of this map, providing various factory methods.
The companion object of this map, providing various factory methods.
Definition Classes
TreeSeqMap → SeqMap → SeqMap → Map → Map → MapOps
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).
final def mapFromIterable[K2, V2](it: collection.Iterable[(K2, V2)]): TreeSeqMap[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()
def max[B >: (K, V)](implicit ord: math.Ordering[B]): (K, V)
Finds the largest element.
Finds the largest element.
B
The type over which the ordering is defined.
ord
An ordering to be used for comparing elements.
returns
the largest element of this collection with respect to the ordering ord.
Definition Classes
IterableOnceOps
Exceptions thrown
UnsupportedOperationException if this collection is empty.
def maxBy[B](f: ((K, V)) => B)(implicit cmp: 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.
B
The result type of the function f.
f
The measuring function.
cmp
An ordering to be used for comparing elements.
returns
the first element of this collection with the largest value measured by function f with respect to the ordering cmp.
Definition Classes
IterableOnceOps
Exceptions thrown
UnsupportedOperationException if this collection is empty.
def maxByOption[B](f: ((K, V)) => B)(implicit cmp: 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.
B
The result type of the function f.
f
The measuring function.
cmp
An ordering to be used for comparing elements.
returns
an option value containing the first element of this collection with the largest value measured by function f with respect to the ordering cmp.
Definition Classes
IterableOnceOps
def maxOption[B >: (K, V)](implicit ord: math.Ordering[B]): Option[(K, V)]
Finds the largest element.
Finds the largest element.
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 collection with respect to the ordering ord.
Definition Classes
IterableOnceOps
def min[B >: (K, V)](implicit ord: math.Ordering[B]): (K, V)
Finds the smallest element.
Finds the smallest element.
B
The type over which the ordering is defined.
ord
An ordering to be used for comparing elements.
returns
the smallest element of this collection with respect to the ordering ord.
Definition Classes
IterableOnceOps
Exceptions thrown
UnsupportedOperationException if this collection is empty.
def minBy[B](f: ((K, V)) => B)(implicit cmp: 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.
B
The result type of the function f.
f
The measuring function.
cmp
An ordering to be used for comparing elements.
returns
the first element of this collection with the smallest value measured by function f with respect to the ordering cmp.
Definition Classes
IterableOnceOps
Exceptions thrown
UnsupportedOperationException if this collection is empty.
def minByOption[B](f: ((K, V)) => B)(implicit cmp: 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.
B
The result type of the function f.
f
The measuring function.
cmp
An ordering to be used for comparing elements.
returns
an option value containing the first element of this collection with the smallest value measured by function f with respect to the ordering cmp.
Definition Classes
IterableOnceOps
def minOption[B >: (K, V)](implicit ord: math.Ordering[B]): Option[(K, V)]
Finds the smallest element.
Finds the smallest element.
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 collection with respect to the ordering ord.
Definition Classes
IterableOnceOps
final def mkString: String
Displays all elements of this collection in a string.
Displays all elements of this collection in a string.
Delegates to addString, which can be overridden.
returns
a string representation of this collection. In the resulting string the string representations (w.r.t. the method toString) of all elements of this collection follow each other without any separator string.
Definition Classes
IterableOnceOps
Annotations
@inline()
final def mkString(sep: String): String
Displays all elements of this collection in a string using a separator string.
Displays all elements of this collection in a string using a separator string.
Delegates to addString, which can be overridden.
sep
the separator string.
returns
a string representation of this collection. In the resulting string the string representations (w.r.t. the method toString) of all elements of this collection are separated by the string sep.
Definition Classes
IterableOnceOps
Annotations
@inline()
Example:
1. List(1, 2, 3).mkString("|") = "1|2|3"
final def mkString(start: String, sep: String, end: String): String
Displays all elements of this collection in a string using start, end, and separator strings.
Displays all elements of this collection 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 collection. 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 collection are separated by the string sep.
Definition Classes
IterableOnceOps
Example:
1. List(1, 2, 3).mkString("(", "; ", ")") = "(1; 2; 3)"
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
def newSpecificBuilder: Builder[(K, V), TreeSeqMap[K, V]]
returns
a strict builder for the same collection type. Note that in the case of lazy collections (e.g. View or 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
MapFactoryDefaults → IterableOps
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 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.
def nonEmpty: Boolean
Tests whether the collection is not empty.
Tests whether the collection is not empty.
returns
true if the collection contains at least one element, false otherwise.
Definition Classes
IterableOnceOps
Annotations
@deprecatedOverriding("nonEmpty is defined as !isEmpty; override isEmpty instead", "2.13.0")
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
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
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
val orderedBy: OrderBy
def orderingBy(orderBy: OrderBy): TreeSeqMap[K, V]
def partition(p: ((K, V)) => Boolean): (TreeSeqMap[K, V], TreeSeqMap[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. Interesting because it splits a collection in two.
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
StrictOptimizedIterableOps → IterableOps
def partitionMap[A1, A2](f: ((K, V)) => Either[A1, A2]): (Iterable[A1], Iterable[A2])
Applies a function f to each element of the iterable collection and returns a pair of iterable collections: 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 iterable collection and returns a pair of iterable collections: 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 = Iterable(1, "one", 2, "two", 3, "three") partitionMap {
 case i: Int => Left(i)
 case s: String => Right(s)
}
// xs == (Iterable(1, 2, 3),
//        Iterable(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 iterable collection to an scala.util.Either
returns
a pair of iterable collections: 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
StrictOptimizedIterableOps → IterableOps
def product[B >: (K, V)](implicit num: math.Numeric[B]): B
Multiplies up the elements of this collection.
Multiplies up the elements of this collection.
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 collection with respect to the * operator in num.
Definition Classes
IterableOnceOps
def reduce[B >: (K, V)](op: (B, B) => B): B
Reduces the elements of this collection using the specified associative binary operator.
Reduces the elements of this collection using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
B
A type parameter for the binary operator, a supertype of A.
op
A binary operator that must be associative.
returns
The result of applying reduce operator op between all the elements if the collection is nonempty.
Definition Classes
IterableOnceOps
Exceptions thrown
UnsupportedOperationException if this collection is empty.
def reduceLeft[B >: (K, V)](op: (B, (K, V)) => B): B
Applies a binary operator to all elements of this collection, going left to right.
Applies a binary operator to all elements of this collection, going left to right.
Note: will not terminate for infinite-sized collections.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
the result of inserting op between consecutive elements of this collection, going left to right:
```
op( op( ... op(x_1, x_2) ..., x_{n-1}), x_n)
```
where x₁, ..., x_n are the elements of this collection.
Definition Classes
IterableOnceOps
Exceptions thrown
UnsupportedOperationException if this collection is empty.
def reduceLeftOption[B >: (K, V)](op: (B, (K, V)) => B): Option[B]
Optionally applies a binary operator to all elements of this collection, going left to right.
Optionally applies a binary operator to all elements of this collection, going left to right.
Note: will not terminate for infinite-sized collections.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
an option value containing the result of reduceLeft(op) if this collection is nonempty, None otherwise.
Definition Classes
IterableOnceOps
def reduceOption[B >: (K, V)](op: (B, B) => B): Option[B]
Reduces the elements of this collection, if any, using the specified associative binary operator.
Reduces the elements of this collection, if any, using the specified associative binary operator.
The order in which operations are performed on elements is unspecified and may be nondeterministic.
B
A type parameter for the binary operator, a supertype of A.
op
A binary operator that must be associative.
returns
An option value containing result of applying reduce operator op between all the elements if the collection is nonempty, and None otherwise.
Definition Classes
IterableOnceOps
def reduceRight[B >: (K, V)](op: ((K, V), B) => B): B
Applies a binary operator to all elements of this collection, going right to left.
Applies a binary operator to all elements of this collection, going right to left.
Note: will not terminate for infinite-sized collections.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
the result of inserting op between consecutive elements of this collection, going right to left:
```
op(x_1, op(x_2, ..., op(x_{n-1}, x_n)...))
```
where x₁, ..., x_n are the elements of this collection.
Definition Classes
IterableOnceOps
Exceptions thrown
UnsupportedOperationException if this collection is empty.
def reduceRightOption[B >: (K, V)](op: ((K, V), B) => B): Option[B]
Optionally applies a binary operator to all elements of this collection, going right to left.
Optionally applies a binary operator to all elements of this collection, going right to left.
Note: will not terminate for infinite-sized collections.
Note: might return different results for different runs, unless the underlying collection type is ordered or the operator is associative and commutative.
B
the result type of the binary operator.
op
the binary operator.
returns
an option value containing the result of reduceRight(op) if this collection is nonempty, None otherwise.
Definition Classes
IterableOnceOps
def refresh(key: K): TreeSeqMap[K, V]
def removed(key: K): TreeSeqMap[K, V]
Removes a key from this map, returning a new map.
Removes a key from this map, returning a new map.
key
the key to be removed
returns
a new map without a binding for key
Definition Classes
TreeSeqMap → MapOps
def removedAll(keys: IterableOnce[K]): TreeSeqMap[K, V]
Creates a new immutable map from this immutable map by removing all elements of another collection.
Creates a new immutable map from this immutable map by removing all elements of another collection.
Note: Even when applied to a view or a lazy collection it will always force the elements.
keys
the collection containing the removed elements.
returns
a new immutable map that contains all elements of the current immutable map except one less occurrence of each of the elements of elems.
Definition Classes
MapOps
def reversed: collection.Iterable[(K, V)]
Attributes
protected
Definition Classes
IterableOnceOps
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
Since
2.10
See also
applyOrElse.
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 iterable collection containing the prefix scan of the elements in this iterable collection
Definition Classes
IterableOps
def scanLeft[B](z: B)(op: (B, (K, V)) => B): Iterable[B]
Produces a iterable collection containing cumulative results of applying the operator going left to right, including the initial value.
Produces a iterable collection 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
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
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
val size: Int
The size of this immutable tree seq map.
The size of this immutable tree seq map.
Note: will not terminate for infinite-sized collections.
returns
the number of elements in this immutable tree seq map.
Definition Classes
TreeSeqMap → IterableOnceOps
def sizeCompare(that: collection.Iterable[_]): Int
Compares the size of this iterable collection to the size of another Iterable.
Compares the size of this iterable collection to the size of another Iterable.
that
the Iterable whose size is compared with this iterable collection'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
def sizeCompare(otherSize: Int): Int
Compares the size of this iterable collection to a test value.
Compares the size of this iterable collection 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
final def sizeIs: SizeCompareOps
Returns a value class containing operations for comparing the size of this iterable collection to a test value.
Returns a value class containing operations for comparing the size of this iterable collection 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()
def slice(from: Int, until: Int): TreeSeqMap[K, V]
Selects an interval of elements.
Selects an interval of elements. The returned immutable tree seq 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 immutable tree seq map.
until
the lowest index to EXCLUDE from this immutable tree seq map.
returns
a immutable tree seq map containing the elements greater than or equal to index from extending up to (but not including) index until of this immutable tree seq map.
Definition Classes
TreeSeqMap → IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def sliding(size: Int, step: Int): Iterator[TreeSeqMap[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.)
size
the number of elements per group
step
the distance between the first elements of successive groups
returns
An iterator producing iterable collections of size size, except the last element (which may be the only element) will be truncated if there are fewer than size elements remaining to be grouped.
Definition Classes
IterableOps
See also
scala.collection.Iterator, method sliding
def sliding(size: Int): Iterator[TreeSeqMap[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.) The "sliding window" step is set to one.
Groups elements in fixed size blocks by passing a "sliding window" over them (as opposed to partitioning them, as is done in grouped.) The "sliding window" step is set to one.
size
the number of elements per group
returns
An iterator producing iterable collections of size size, except the last element (which may be the only element) will be truncated if there are fewer than size elements remaining to be grouped.
Definition Classes
IterableOps
See also
scala.collection.Iterator, method sliding
def span(p: ((K, V)) => Boolean): (TreeSeqMap[K, V], TreeSeqMap[K, V])
Splits this iterable collection into a prefix/suffix pair according to a predicate.
Splits this iterable collection 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 iterable collection whose elements all satisfy p, and the rest of this iterable collection.
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.
def splitAt(n: Int): (TreeSeqMap[K, V], TreeSeqMap[K, V])
Splits this iterable collection into a prefix/suffix pair at a given position.
Splits this iterable collection 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 iterable collections consisting of the first n elements of this iterable collection, and the other elements.
Definition Classes
IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.
def stepper[S <: Stepper[_]](implicit shape: StepperShape[(K, V), S]): S
Returns a Stepper for the elements of this collection.
Returns a 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 StepperShape parameter defines the resulting Stepper type according to the element type of this collection.
- For collections of Int, Short, Byte or Char, an IntStepper is returned
- For collections of Double or Float, a DoubleStepper is returned
- For collections of Long a LongStepper is returned
- For any other element type, an AnyStepper is returned
Note that this method is overridden in subclasses and the return type is refined to S with EfficientSplit, for example 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
final def strictOptimizedCollect[B, C2](b: Builder[B, C2], pf: PartialFunction[(K, V), B]): C2
B
Type of elements of the resulting collection (e.g. String)
C2
Type of the resulting collection (e.g. List[String])
b
Builder to use to build the resulting collection
pf
Element transformation partial function
returns
The resulting collection
Attributes
protected[this]
Definition Classes
StrictOptimizedIterableOps
Annotations
@inline()
final def strictOptimizedConcat[B >: (K, V), C2](that: IterableOnce[B], b: Builder[B, C2]): C2
B
Type of elements of the resulting collections (e.g. Int)
C2
Type of the resulting collection (e.g. List[Int])
that
Elements to concatenate to this collection
b
Builder to use to build the resulting collection
returns
The resulting collection
Attributes
protected[this]
Definition Classes
StrictOptimizedIterableOps
Annotations
@inline()
final def strictOptimizedFlatMap[B, C2](b: Builder[B, C2], f: ((K, V)) => IterableOnce[B]): C2
B
Type of elements of the resulting collection (e.g. String)
C2
Type of the resulting collection (e.g. List[String])
b
Builder to use to build the resulting collection
f
Element transformation function
returns
The resulting collection
Attributes
protected[this]
Definition Classes
StrictOptimizedIterableOps
Annotations
@inline()
final def strictOptimizedFlatten[B, C2](b: Builder[B, C2])(implicit toIterableOnce: ((K, V)) => IterableOnce[B]): C2
B
Type of elements of the resulting collection (e.g. Int)
C2
Type of the resulting collection (e.g. List[Int])
b
Builder to use to build the resulting collection
toIterableOnce
Evidence that A can be seen as an IterableOnce[B]
returns
The resulting collection
Attributes
protected[this]
Definition Classes
StrictOptimizedIterableOps
Annotations
@inline()
final def strictOptimizedMap[B, C2](b: Builder[B, C2], f: ((K, V)) => B): C2
B
Type of elements of the resulting collection (e.g. String)
C2
Type of the resulting collection (e.g. List[String])
b
Builder to use to build the resulting collection
f
Element transformation function
returns
The resulting collection
Attributes
protected[this]
Definition Classes
StrictOptimizedIterableOps
Annotations
@inline()
final def strictOptimizedZip[B, C2](that: IterableOnce[B], b: Builder[((K, V), B), C2]): C2
B
Type of elements of the second collection (e.g. String)
C2
Type of the resulting collection (e.g. List[(Int, String)])
that
Collection to zip with this collection
b
Builder to use to build the resulting collection
returns
The resulting collection
Attributes
protected[this]
Definition Classes
StrictOptimizedIterableOps
Annotations
@inline()
def stringPrefix: String
Attributes
protected[this]
Definition Classes
Map → Iterable
Annotations
@deprecatedOverriding("Compatibility override", "2.13.0")
def sum[B >: (K, V)](implicit num: math.Numeric[B]): B
Sums up the elements of this collection.
Sums up the elements of this collection.
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 collection with respect to the + operator in num.
Definition Classes
IterableOnceOps
final def synchronized[T0](arg0: => T0): T0
Definition Classes
AnyRef
def tail: TreeSeqMap[K, V]
The rest of the collection without its first element.
The rest of the collection without its first element.
Definition Classes
TreeSeqMap → IterableOps
def tails: Iterator[TreeSeqMap[K, V]]
Iterates over the tails of this iterable collection.
Iterates over the tails of this iterable collection. The first value will be this iterable collection and the final one will be an empty iterable collection, with the intervening values the results of successive applications of tail.
returns
an iterator over all the tails of this iterable collection
Definition Classes
IterableOps
Example:
1. List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)
def take(n: Int): TreeSeqMap[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 iterable collection.
returns
a iterable collection consisting only of the first n elements of this iterable collection, or else the whole iterable collection, if it has less than n elements. If n is negative, returns an empty iterable collection.
Definition Classes
IterableOps → IterableOnceOps
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.
def takeRight(n: Int): TreeSeqMap[K, V]
A collection containing the last n elements of this collection.
A collection containing the last n elements of this collection.
Note: Even when applied to a view or a lazy collection it will always force the elements.
n
the number of elements to take from this iterable collection.
returns
a iterable collection consisting only of the last n elements of this iterable collection, or else the whole iterable collection, if it has less than n elements. If n is negative, returns an empty iterable collection.
Definition Classes
StrictOptimizedIterableOps → IterableOps
def takeWhile(p: ((K, V)) => Boolean): TreeSeqMap[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 iterable collection whose elements all satisfy the predicate p.
Definition Classes
IterableOps → IterableOnceOps
def tapEach[U](f: ((K, V)) => U): TreeSeqMap[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 iterable collection
returns
The same logical collection as this
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
def to[C1](factory: Factory[(K, V), C1]): C1
Given a collection factory factory, convert this collection to the appropriate representation for the current element type A.
Given a collection factory factory, convert this collection 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
def toArray[B >: (K, V)](implicit arg0: ClassTag[B]): Array[B]
Convert collection to array.
Convert collection to array.
Definition Classes
IterableOnceOps
final def toBuffer[B >: (K, V)]: Buffer[B]
Definition Classes
IterableOnceOps
Annotations
@inline()
def toIndexedSeq: IndexedSeq[(K, V)]
Definition Classes
IterableOnceOps
final def toIterable: TreeSeqMap.this.type
returns
This collection as an Iterable[A]. No new collection will be built if this is already an Iterable[A].
Definition Classes
Iterable → IterableOps
def toList: List[(K, V)]
Definition Classes
IterableOnceOps
final def toMap[K2, V2](implicit ev: <:<[(K, V), (K2, V2)]): Map[K2, V2]
Definition Classes
Map → IterableOnceOps
def toSeq: Seq[(K, V)]
returns
This collection as a Seq[A]. This is equivalent to to(Seq) but might be faster.
Definition Classes
IterableOnceOps
def toSet[B >: (K, V)]: Set[B]
Definition Classes
IterableOnceOps
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
Map → Function1 → Iterable → AnyRef → Any
def toVector: Vector[(K, V)]
Definition Classes
IterableOnceOps
def transform[W](f: (K, V) => W): TreeSeqMap[K, W]
This function transforms all the values of mappings contained in this map with function f.
This function transforms all the values of mappings contained in this map with function f.
f
A function over keys and values
returns
the updated map
Definition Classes
MapOps
def transpose[B](implicit asIterable: ((K, V)) => collection.Iterable[B]): Iterable[Iterable[B]]
Transposes this iterable collection of iterable collections into a iterable collection of iterable collections.
Transposes this iterable collection of iterable collections into a iterable collection of iterable collections.
The resulting collection's type will be guided by the static type of iterable collection. 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 iterable collection is an Iterable.
returns
a two-dimensional iterable collection of iterable collections which has as nth row the nth column of this iterable collection.
Definition Classes
IterableOps
Exceptions thrown
IllegalArgumentException if all collections in this iterable collection are not of the same size.
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
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 TreeSeqMap[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") }
def unzip[A1, A2](implicit asPair: ((K, V)) => (A1, A2)): (Iterable[A1], Iterable[A2])
Converts this iterable collection of pairs into two collections of the first and second half of each pair.
Converts this iterable collection of pairs into two collections of the first and second half of each pair.
```
val xs = Iterable(
           (1, "one"),
           (2, "two"),
           (3, "three")).unzip
// xs == (Iterable(1, 2, 3),
//        Iterable(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 iterable collection is a pair.
returns
a pair of iterable collections, containing the first, respectively second half of each element pair of this iterable collection.
Definition Classes
StrictOptimizedIterableOps → IterableOps
def unzip3[A1, A2, A3](implicit asTriple: ((K, V)) => (A1, A2, A3)): (Iterable[A1], Iterable[A2], Iterable[A3])
Converts this iterable collection of triples into three collections of the first, second, and third element of each triple.
Converts this iterable collection of triples into three collections of the first, second, and third element of each triple.
```
val xs = Iterable(
           (1, "one", '1'),
           (2, "two", '2'),
           (3, "three", '3')).unzip3
// xs == (Iterable(1, 2, 3),
//        Iterable(one, two, three),
//        Iterable(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 iterable collection is a triple.
returns
a triple of iterable collections, containing the first, second, respectively third member of each element triple of this iterable collection.
Definition Classes
StrictOptimizedIterableOps → IterableOps
def updated[V1 >: V](key: K, value: V1): TreeSeqMap[K, V1]
Creates a new map obtained by updating this map with a given key/value pair.
Creates a new map obtained by updating this map with a given key/value pair.
V1
the type of the added value
key
the key
value
the value
returns
A new map with the new key/value mapping added to this map. <invalid inheritdoc annotation>
Definition Classes
TreeSeqMap → MapOps
def updatedWith[V1 >: V](key: K)(remappingFunction: (Option[V]) => Option[V1]): TreeSeqMap[K, V1]
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 partial function that receives current optionally-mapped value and return a new mapping
returns
A new map with the updated mapping with the key
Definition Classes
MapOps
Since
2.13.0
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
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
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
TreeSeqMap → MapOps
def view: MapView[K, V]
A view over the elements of this collection.
A view over the elements of this collection.
Definition Classes
MapOps → IterableOps
final def wait(): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
final def wait(arg0: Long, arg1: Int): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException])
final def wait(arg0: Long): Unit
Definition Classes
AnyRef
Annotations
@throws(classOf[java.lang.InterruptedException]) @native()
def withDefault[V1 >: V](d: (K) => V1): Map[K, V1]
The same map with a given default function.
The same 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
Map
def withDefaultValue[V1 >: V](d: V1): Map[K, V1]
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
Map
def withFilter(p: ((K, V)) => Boolean): MapOps.WithFilter[K, V, [x]Iterable[x], [x, y]TreeSeqMap[x, y]]
Creates a non-strict filter of this map.
Creates a non-strict filter of this 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 map which satisfy the predicate p.
Definition Classes
MapFactoryDefaults → IterableOps
def zip[B](that: IterableOnce[B]): Iterable[((K, V), B)]
Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.
Returns a iterable collection formed from this iterable collection 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 iterable collection containing pairs consisting of corresponding elements of this iterable collection and that. The length of the returned collection is the minimum of the lengths of this iterable collection and that.
Definition Classes
StrictOptimizedIterableOps → IterableOps
def zipAll[A1 >: (K, V), B](that: collection.Iterable[B], thisElem: A1, thatElem: B): Iterable[(A1, B)]
Returns a iterable collection formed from this iterable collection and another iterable collection by combining corresponding elements in pairs.
Returns a iterable collection formed from this iterable collection 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 iterable collection is shorter than that.
thatElem
the element to be used to fill up the result if that is shorter than this iterable collection.
returns
a new collection of type That containing pairs consisting of corresponding elements of this iterable collection and that. The length of the returned collection is the maximum of the lengths of this iterable collection and that. If this iterable collection is shorter than that, thisElem values are used to pad the result. If that is shorter than this iterable collection, thatElem values are used to pad the result.
Definition Classes
IterableOps
def zipWithIndex: Iterable[((K, V), Int)]
Zips this iterable collection with its indices.
Zips this iterable collection with its indices.
returns
A new iterable collection containing pairs consisting of all elements of this iterable collection paired with their index. Indices start at 0.
Definition Classes
StrictOptimizedIterableOps → IterableOps → IterableOnceOps
Example:
1. List("a", "b", "c").zipWithIndex == List(("a", 0), ("b", 1), ("c", 2))
Note
Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

Shadowed Implicit Value Members

def +(other: String): String
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toany2stringadd[TreeSeqMap[K, V]] performed by method any2stringadd in scala.Predef.
Shadowing
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Definition Classes
any2stringadd

Deprecated Value Members

def +[V1 >: V](elem1: (K, V1), elem2: (K, V1), elems: (K, V1)*): TreeSeqMap[K, V1]
Definition Classes
StrictOptimizedMapOps → MapOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use ++ with an explicit collection argument instead of + with varargs
def ++:[V1 >: V](that: IterableOnce[(K, V1)]): TreeSeqMap[K, V1]
Definition Classes
MapOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use ++ instead of ++: for collections of type Iterable
def ++:[B >: (K, V)](that: IterableOnce[B]): Iterable[B]
Definition Classes
IterableOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use ++ instead of ++: for collections of type Iterable
def -(key1: K, key2: K, keys: K*): TreeSeqMap[K, V]
Definition Classes
MapOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use -- with an explicit collection
def /:[B](z: B)(op: (B, (K, V)) => B): B
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.foldLeft instead
final def /:[B](z: B)(op: (B, (K, V)) => B): B
Definition Classes
IterableOnceOps
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use foldLeft instead of /:
def :\[B](z: B)(op: ((K, V), B) => B): B
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.foldRight instead
final def :\[B](z: B)(op: ((K, V), B) => B): B
Definition Classes
IterableOnceOps
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use foldRight instead of :\
def aggregate[B](z: => B)(seqop: (B, (K, V)) => B, combop: (B, B) => B): B
Definition Classes
IterableOnceOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) aggregate is not relevant for sequential collections. Use foldLeft(z)(seqop) instead.
def collectFirst[B](f: PartialFunction[(K, V), B]): Option[B]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.collectFirst(...) instead
def companion: IterableFactory[[_]Iterable[_]]
Definition Classes
IterableOps
Annotations
@deprecated @deprecatedOverriding("Use iterableFactory instead", "2.13.0") @inline()
Deprecated
(Since version 2.13.0) Use iterableFactory instead
def copyToBuffer(dest: Buffer[(K, V)]): Unit
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.copyToBuffer(...) instead
final def copyToBuffer[B >: (K, V)](dest: Buffer[B]): Unit
Definition Classes
IterableOnceOps
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use dest ++= coll instead
def count(f: ((K, V)) => Boolean): Int
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.count(...) instead
def exists(f: ((K, V)) => Boolean): Boolean
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.exists(...) instead
def filter(f: ((K, V)) => Boolean): Iterator[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.filter(...) instead
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).
def find(p: ((K, V)) => Boolean): Option[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.find instead
def flatMap[B](f: ((K, V)) => IterableOnce[B]): IterableOnce[B]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.flatMap instead or consider requiring an Iterable
def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.fold instead
def foldLeft[B](z: B)(op: (B, (K, V)) => B): B
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.foldLeft instead
def foldRight[B](z: B)(op: ((K, V), B) => B): B
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.foldRight instead
def forall(f: ((K, V)) => Boolean): Boolean
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.forall(...) instead
def foreach[U](f: ((K, V)) => U): Unit
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.foreach(...) instead
def hasDefiniteSize: Boolean
Tests whether this collection is known to have a finite size.
Tests whether this collection 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
IterableOnceOps
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
def isEmpty: Boolean
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.isEmpty instead
def map[B](f: ((K, V)) => B): IterableOnce[B]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.map instead or consider requiring an Iterable
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
MapOps
Annotations
@deprecated
Deprecated
(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).
def max(implicit ord: math.Ordering[(K, V)]): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.max instead
def maxBy[B](f: ((K, V)) => B)(implicit cmp: math.Ordering[B]): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.maxBy(...) instead
def min(implicit ord: math.Ordering[(K, V)]): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.min instead
def minBy[B](f: ((K, V)) => B)(implicit cmp: math.Ordering[B]): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.minBy(...) instead
def mkString: String
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.mkString instead
def mkString(sep: String): String
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
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Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.mkString instead
def mkString(start: String, sep: String, end: String): String
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.mkString instead
def nonEmpty: Boolean
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).nonEmpty
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.nonEmpty instead
def product(implicit num: math.Numeric[(K, V)]): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).product(num)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.product instead
def reduce(f: ((K, V), (K, V)) => (K, V)): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).reduce(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.reduce(...) instead
def reduceLeft(f: ((K, V), (K, V)) => (K, V)): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).reduceLeft(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.reduceLeft(...) instead
def reduceLeftOption(f: ((K, V), (K, V)) => (K, V)): Option[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).reduceLeftOption(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.reduceLeftOption(...) instead
def reduceOption(f: ((K, V), (K, V)) => (K, V)): Option[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).reduceOption(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.reduceOption(...) instead
def reduceRight(f: ((K, V), (K, V)) => (K, V)): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).reduceRight(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.reduceRight(...) instead
def reduceRightOption(f: ((K, V), (K, V)) => (K, V)): Option[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).reduceRightOption(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.reduceRightOption(...) instead
final def repr: TreeSeqMap[K, V]
Definition Classes
IterableOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use coll instead of repr in a collection implementation, use the collection value itself from the outside
def sameElements[B >: A](that: IterableOnce[B]): Boolean
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.sameElements instead
def seq: TreeSeqMap.this.type
Definition Classes
Iterable
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Iterable.seq always returns the iterable itself
def size: Int
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
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(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).size
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.size instead
def sum(implicit num: math.Numeric[(K, V)]): (K, V)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).sum(num)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.sum instead
def to[C1](factory: Factory[(K, V), C1]): C1
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
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This implicitly inherited member is shadowed by one or more members in this class.
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(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).to(factory)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.to(factory) instead
def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
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(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toArray(arg0)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.toArray
def toBuffer[B >: A]: Buffer[B]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toBuffer
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.to(ArrayBuffer) instead
def toIndexedSeq: collection.IndexedSeq[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toIndexedSeq
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.toIndexedSeq instead
final def toIterable: collection.Iterable[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
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(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toIterable
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.to(Iterable) instead
def toIterator: Iterator[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toIterator
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator instead
final def toIterator: Iterator[(K, V)]
Definition Classes
IterableOnceOps
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator instead of .toIterator
def toList: List[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
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(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toList
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.to(List) instead
def toMap[K, V](implicit ev: <:<[(K, V), (K, V)]): Map[K, V]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
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(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toMap(ev)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.to(Map) instead
def toSeq: Seq[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toSeq
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.to(Seq) instead
def toSet[B >: A]: Set[B]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toSet
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.to(Set) instead
def toStream: Stream[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toStream
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.to(LazyList) instead
final def toStream: Stream[(K, V)]
Definition Classes
IterableOnceOps
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .to(LazyList) instead of .toStream
final def toTraversable: collection.Traversable[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toTraversable
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use toIterable instead
final def toTraversable: collection.Traversable[(K, V)]
Converts this iterable collection to an unspecified Iterable.
Converts this iterable collection to an unspecified Iterable. Will return the same collection if this instance is already Iterable.
returns
An Iterable containing all elements of this iterable collection.
Definition Classes
IterableOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use toIterable instead
def toVector: Vector[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
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(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).toVector
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated @inline()
Deprecated
(Since version 2.13.0) Use .iterator.to(Vector) instead
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
IterableOps
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .view.slice(from, until) instead of .view(from, until)
def withFilter(f: ((K, V)) => Boolean): Iterator[(K, V)]
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toIterableOnceExtensionMethods[(K, V)] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
Shadowing
This implicitly inherited member is shadowed by one or more members in this class.
To access this member you can use a type ascription:
(treeSeqMap: IterableOnceExtensionMethods[(K, V)]).withFilter(f)
Definition Classes
IterableOnceExtensionMethods
Annotations
@deprecated
Deprecated
(Since version 2.13.0) Use .iterator.withFilter(...) instead
def →[B](y: B): (TreeSeqMap[K, V], B)
Implicit
This member is added by an implicit conversion from TreeSeqMap[K, V] toArrowAssoc[TreeSeqMap[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
@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 StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

Packages

Package structure

Automatic imports

TreeSeqMap

Companion object TreeSeqMap

Type Members

Value Members

Shadowed Implicit Value Members

Deprecated Value Members

Inherited from StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

Inherited from collection.StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

Inherited from StrictOptimizedIterableOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]]

Inherited from SeqMap[K, V]

Inherited from collection.SeqMap[K, V]

Inherited from AbstractMap[K, V]

Inherited from Map[K, V]

Inherited from MapOps[K, V, [X, +Y]TreeSeqMap[X, Y], TreeSeqMap[K, V]]

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]TreeSeqMap[x, y], [x]Iterable[x]]

Inherited from collection.MapOps[K, V, [_, _]TreeSeqMap[_, _], TreeSeqMap[K, V]]

Inherited from PartialFunction[K, V]

Inherited from (K) => V

Inherited from AbstractIterable[(K, V)]

Inherited from collection.Iterable[(K, V)]

Inherited from IterableFactoryDefaults[(K, V), [x]Iterable[x]]

Inherited from IterableOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]]

Inherited from IterableOnceOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]]

Inherited from IterableOnce[(K, V)]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion UnliftOps fromTreeSeqMap[K, V] to UnliftOps[K, B]

Inherited by implicit conversion iterableOnceExtensionMethods fromTreeSeqMap[K, V] to IterableOnceExtensionMethods[(K, V)]

Inherited by implicit conversion any2stringadd fromTreeSeqMap[K, V] to any2stringadd[TreeSeqMap[K, V]]

Inherited by implicit conversion StringFormat fromTreeSeqMap[K, V] to StringFormat[TreeSeqMap[K, V]]

Inherited by implicit conversion Ensuring fromTreeSeqMap[K, V] to Ensuring[TreeSeqMap[K, V]]

Inherited by implicit conversion ArrowAssoc fromTreeSeqMap[K, V] to ArrowAssoc[TreeSeqMap[K, V]]

Ungrouped

Packages

Package structure

Automatic imports

TreeSeqMap

Companion object TreeSeqMap

Type Members

Value Members

Shadowed Implicit Value Members

Deprecated Value Members

Inherited from StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

Inherited from collection.StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

Inherited from StrictOptimizedIterableOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]]

Inherited from SeqMap[K, V]

Inherited from collection.SeqMap[K, V]

Inherited from AbstractMap[K, V]

Inherited from Map[K, V]

Inherited from MapOps[K, V, [X, +Y]TreeSeqMap[X, Y], TreeSeqMap[K, V]]

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]TreeSeqMap[x, y], [x]Iterable[x]]

Inherited from collection.MapOps[K, V, [_, _]TreeSeqMap[_, _], TreeSeqMap[K, V]]

Inherited from PartialFunction[K, V]

Inherited from (K) => V

Inherited from AbstractIterable[(K, V)]

Inherited from collection.Iterable[(K, V)]

Inherited from IterableFactoryDefaults[(K, V), [x]Iterable[x]]

Inherited from IterableOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]]

Inherited from IterableOnceOps[(K, V), [_]Iterable[_], TreeSeqMap[K, V]]

Inherited from IterableOnce[(K, V)]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion UnliftOps fromTreeSeqMap[K, V] to UnliftOps[K, B]

Inherited by implicit conversion iterableOnceExtensionMethods fromTreeSeqMap[K, V] to IterableOnceExtensionMethods[(K, V)]

Inherited by implicit conversion any2stringadd fromTreeSeqMap[K, V] to any2stringadd[TreeSeqMap[K, V]]

Inherited by implicit conversion StringFormat fromTreeSeqMap[K, V] to StringFormat[TreeSeqMap[K, V]]

Inherited by implicit conversion Ensuring fromTreeSeqMap[K, V] to Ensuring[TreeSeqMap[K, V]]

Inherited by implicit conversion ArrowAssoc fromTreeSeqMap[K, V] to ArrowAssoc[TreeSeqMap[K, V]]

Ungrouped

TreeSeqMap