Packages

c

scala.collection.mutable

ArrayBufferView

final class ArrayBufferView[A] extends AbstractIndexedSeqView[A]

Source
ArrayBuffer.scala
Type Hierarchy
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Inherited
  1. ArrayBufferView
  2. AbstractIndexedSeqView
  3. IndexedSeqView
  4. IndexedSeqOps
  5. AbstractSeqView
  6. SeqView
  7. SeqOps
  8. AbstractView
  9. View
  10. Serializable
  11. AbstractIterable
  12. Iterable
  13. IterableFactoryDefaults
  14. IterableOps
  15. IterableOnceOps
  16. IterableOnce
  17. AnyRef
  18. Any
Implicitly
  1. by iterableOnceExtensionMethods
  2. by any2stringadd
  3. by StringFormat
  4. by Ensuring
  5. by ArrowAssoc
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new ArrayBufferView(array: Array[AnyRef], length: Int)
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.7) never intended to be public; call ArrayBuffer#view instead

Value Members

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

    Test two objects for inequality.

    Test two objects for inequality.

    returns

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

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

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

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

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toany2stringadd[ArrayBufferView[A]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. final def ++[B >: A](suffix: IterableOnce[B]): View[B]

    Alias for concat

    Alias for concat

    Definition Classes
    IterableOps
    Annotations
    @inline()
  5. final def ++:[B >: A](prefix: IterableOnce[B]): View[B]

    Alias for prependedAll.

    Alias for prependedAll.

    Definition Classes
    SeqOpsIterableOps
    Annotations
    @inline()
  6. final def +:[B >: A](elem: B): View[B]

    Alias for prepended.

    Alias for prepended.

    Note that :-ending operators are right associative (see example). A mnemonic for +: vs. :+ is: the COLon goes on the COLlection side.

    Definition Classes
    SeqOps
    Annotations
    @inline()
  7. def ->[B](y: B): (ArrayBufferView[A], B)
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toArrowAssoc[ArrayBufferView[A]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  8. final def :+[B >: A](elem: B): View[B]

    Alias for appended.

    Alias for appended.

    Note that :-ending operators are right associative (see example). A mnemonic for +: vs. :+ is: the COLon goes on the COLlection side.

    Definition Classes
    SeqOps
    Annotations
    @inline()
  9. final def :++[B >: A](suffix: IterableOnce[B]): View[B]

    Alias for appendedAll.

    Alias for appendedAll.

    Definition Classes
    SeqOps
    Annotations
    @inline()
  10. final def ==(arg0: Any): Boolean

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

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

    returns

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

    Definition Classes
    AnyRef → Any
  11. final def addString(b: StringBuilder): b.type

    Appends all elements of this sequence to a string builder.

    Appends all elements of this sequence to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this sequence 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()
  12. final def addString(b: StringBuilder, sep: String): b.type

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

    Appends all elements of this sequence 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 sequence, 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()
  13. def addString(b: StringBuilder, start: String, sep: String, end: String): b.type

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

    Appends all elements of this sequence 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 sequence 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)
    b

    the string builder to which elements are appended.

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    the string builder b to which elements were appended.

    Definition Classes
    IterableOnceOps
  14. def appended[B >: A](elem: B): IndexedSeqView[B]

    A copy of this sequence with an element appended.

    A copy of this sequence with an element appended.

    Note: will not terminate for infinite-sized collections.

    Example:

    scala> val a = List(1)
    a: List[Int] = List(1)
    
    scala> val b = a :+ 2
    b: List[Int] = List(1, 2)
    
    scala> println(a)
    List(1)
    B

    the element type of the returned sequence.

    elem

    the appended element

    returns

    a new sequence consisting of all elements of this sequence followed by value.

    Definition Classes
    ArrayBufferViewIndexedSeqViewSeqViewSeqOps
  15. def appendedAll[B >: A](suffix: SomeIndexedSeqOps[B]): IndexedSeqView[B]
    Definition Classes
    ArrayBufferViewIndexedSeqView
  16. def appendedAll[B >: A](suffix: SomeSeqOps[B]): SeqView[B]
    Definition Classes
    SeqView
  17. def appendedAll[B >: A](suffix: IterableOnce[B]): View[B]

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

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

    B

    the element type of the returned collection.

    suffix

    the iterable to append.

    returns

    a new collection of type CC[B] which contains all elements of this sequence followed by all elements of suffix.

    Definition Classes
    SeqOps
  18. def apply(n: Int): A

    Gets the element at the specified index.

    Gets the element at the specified index. This operation is provided for convenience in Seq. It should not be assumed to be efficient unless you have an IndexedSeq.

    Definition Classes
    ArrayBufferViewSeqOps
    Annotations
    @throws(cause = scala.this.throws.<init>$default$1[IndexOutOfBoundsException])
  19. 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.

  20. 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 sequence. By default the string prefix is the simple name of the collection class sequence.

    Attributes
    protected[this]
    Definition Classes
    ArrayBufferViewIterable
  21. 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[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
    Note

    not specified by SLS as a member of AnyRef

  22. final def coll: ArrayBufferView.this.type

    returns

    This collection as a C.

    Attributes
    protected
    Definition Classes
    IterableIterableOps
  23. def collect[B](pf: PartialFunction[A, B]): View[B]

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

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

    B

    the element type of the returned sequence.

    pf

    the partial function which filters and maps the sequence.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  24. def collectFirst[B](pf: PartialFunction[A, B]): Option[B]

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

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

    Note: may not terminate for infinite-sized collections.

    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)

  25. def combinations(n: Int): Iterator[View[A]]

    Iterates over combinations of elements.

    Iterates over combinations of elements.

    A combination of length n is a sequence of n elements selected in order of their first index in this sequence.

    For example, "xyx" has two combinations of length 2. The x is selected first: "xx", "xy". The sequence "yx" is not returned as a combination because it is subsumed by "xy".

    If there is more than one way to generate the same combination, only one will be returned.

    For example, the result "xy" arbitrarily selected one of the x elements.

    As a further illustration, "xyxx" has three different ways to generate "xy" because there are three elements x to choose from. Moreover, there are three unordered pairs "xx" but only one is returned.

    It is not specified which of these equal combinations is returned. It is an implementation detail that should not be relied on. For example, the combination "xx" does not necessarily contain the first x in this sequence. This behavior is observable if the elements compare equal but are not identical.

    As a consequence, "xyx".combinations(3).next() is "xxy": the combination does not reflect the order of the original sequence, but the order in which elements were selected, by "first index"; the order of each x element is also arbitrary.

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

    returns

    An Iterator which traverses the n-element combinations of this sequence.

    Definition Classes
    SeqOps
    Example:
    1. Seq('a', 'b', 'b', 'b', 'c').combinations(2).foreach(println)
      // List(a, b)
      // List(a, c)
      // List(b, b)
      // List(b, c)
      Seq('b', 'a', 'b').combinations(2).foreach(println)
      // List(b, b)
      // List(b, a)
  26. def concat[B >: A](suffix: SomeIndexedSeqOps[B]): IndexedSeqView[B]
    Definition Classes
    ArrayBufferViewIndexedSeqView
  27. def concat[B >: A](suffix: SomeSeqOps[B]): SeqView[B]
    Definition Classes
    SeqView
  28. final def concat[B >: A](suffix: IterableOnce[B]): View[B]

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

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

    B

    the element type of the returned collection.

    suffix

    the iterable to append.

    returns

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

    Definition Classes
    SeqOpsIterableOps
    Annotations
    @inline()
  29. def contains[A1 >: A](elem: A1): Boolean

    Tests whether this sequence contains a given value as an element.

    Tests whether this sequence contains a given value as an element.

    Note: may not terminate for infinite-sized collections.

    elem

    the element to test.

    returns

    true if this sequence has an element that is equal (as determined by ==) to elem, false otherwise.

    Definition Classes
    SeqOps
  30. def containsSlice[B >: A](that: collection.Seq[B]): Boolean

    Tests whether this sequence contains a given sequence as a slice.

    Tests whether this sequence contains a given sequence as a slice.

    Note: may not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    true if this sequence contains a slice with the same elements as that, otherwise false.

    Definition Classes
    SeqOps
  31. def copyToArray[B >: A](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 sequence.

    Copying will stop once either all the elements of this sequence 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.

  32. def copyToArray[B >: A](xs: Array[B], start: Int): Int

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

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

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

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

    B

    the type of the elements of the array.

    xs

    the array to fill.

    start

    the starting index of xs.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
    Note

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

  33. def copyToArray[B >: A](xs: Array[B]): Int

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

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

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

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

    B

    the type of the elements of the array.

    xs

    the array to fill.

    returns

    the number of elements written to the array

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
    Note

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

  34. def corresponds[B](that: collection.Seq[B])(p: (A, B) => Boolean): Boolean

    Tests whether every element of this sequence relates to the corresponding element of another sequence by satisfying a test predicate.

    Tests whether every element of this sequence relates to the corresponding element of another sequence by satisfying a test predicate.

    B

    the type of the elements of that

    that

    the other sequence

    p

    the test predicate, which relates elements from both sequences

    returns

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

    Definition Classes
    SeqOps
  35. def corresponds[B](that: IterableOnce[B])(p: (A, B) => Boolean): Boolean

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

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

    Note: will not terminate for infinite-sized collections.

    B

    the type of the elements of that

    that

    the other collection

    p

    the test predicate, which relates elements from both collections

    returns

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

    Definition Classes
    IterableOnceOps
  36. def count(p: (A) => Boolean): Int

    Counts the number of elements in the sequence which satisfy a predicate.

    Counts the number of elements in the sequence which satisfy a predicate.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    Definition Classes
    IterableOnceOps
  37. def diff[B >: A](that: collection.Seq[B]): View[A]

    Computes the multiset difference between this sequence and another sequence.

    Computes the multiset difference between this sequence and another sequence.

    that

    the sequence of elements to remove

    returns

    a new sequence which contains all elements of this sequence except some of occurrences of elements that also appear in that. If an element value x appears n times in that, then the first n occurrences of x will not form part of the result, but any following occurrences will.

    Definition Classes
    SeqOps
  38. def distinct: View[A]

    Selects all the elements of this sequence ignoring the duplicates.

    Selects all the elements of this sequence ignoring the duplicates.

    returns

    a new sequence consisting of all the elements of this sequence without duplicates.

    Definition Classes
    SeqOps
  39. def distinctBy[B](f: (A) => B): View[A]

    Selects all the elements of this sequence ignoring the duplicates as determined by == after applying the transforming function f.

    Selects all the elements of this sequence ignoring the duplicates as determined by == after applying the transforming function f.

    B

    the type of the elements after being transformed by f

    f

    The transforming function whose result is used to determine the uniqueness of each element

    returns

    a new sequence consisting of all the elements of this sequence without duplicates.

    Definition Classes
    SeqOps
  40. def drop(n: Int): IndexedSeqView[A]

    Selects all elements except the first n ones.

    Selects all elements except the first n ones.

    n

    the number of elements to drop from this sequence.

    returns

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

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqViewIterableOpsIterableOnceOps
  41. def dropRight(n: Int): IndexedSeqView[A]

    Selects all elements except last n ones.

    Selects all elements except last n ones.

    n

    the number of elements to drop from this sequence.

    returns

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

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqViewIterableOps
  42. def dropWhile(p: (A) => Boolean): View[A]

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

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

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

    Example:

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

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

    p

    The predicate used to test elements.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  43. def empty: View[A]

    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
    ViewIterableFactoryDefaultsIterableOps
  44. def endsWith[B >: A](that: collection.Iterable[B]): Boolean

    Tests whether this sequence ends with the given sequence.

    Tests whether this sequence ends with the given sequence.

    Note: will not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    true if this sequence has that as a suffix, false otherwise.

    Definition Classes
    SeqOps
  45. def ensuring(cond: (ArrayBufferView[A]) => Boolean, msg: => Any): ArrayBufferView[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toEnsuring[ArrayBufferView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  46. def ensuring(cond: (ArrayBufferView[A]) => Boolean): ArrayBufferView[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toEnsuring[ArrayBufferView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  47. def ensuring(cond: Boolean, msg: => Any): ArrayBufferView[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toEnsuring[ArrayBufferView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  48. def ensuring(cond: Boolean): ArrayBufferView[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toEnsuring[ArrayBufferView[A]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  49. 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
  50. def equals(arg0: AnyRef): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to eq.

    See also equals in scala.Any.

    returns

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

    Definition Classes
    AnyRef → Any
  51. def exists(p: (A) => Boolean): Boolean

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

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

    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 sequence, otherwise false

    Definition Classes
    IterableOnceOps
  52. def filter(pred: (A) => Boolean): View[A]

    Selects all elements of this sequence which satisfy a predicate.

    Selects all elements of this sequence which satisfy a predicate.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  53. def filterNot(pred: (A) => Boolean): View[A]

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

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

    pred

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  54. def finalize(): Unit

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

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

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

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

    not specified by SLS as a member of AnyRef

  55. def find(p: (A) => Boolean): Option[A]

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

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

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableOnceOps
  56. def findLast(p: (A) => Boolean): Option[A]

    Finds the last element of the sequence satisfying a predicate, if any.

    Finds the last element of the sequence satisfying a predicate, if any.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    an option value containing the last element in the sequence that satisfies p, or None if none exists.

    Definition Classes
    SeqOps
  57. def flatMap[B](f: (A) => IterableOnce[B]): View[B]

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

    Builds a new sequence by applying a function to all elements of this sequence 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 sequence. 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 sequence resulting from applying the given collection-valued function f to each element of this sequence and concatenating the results.

    Definition Classes
    IterableOpsIterableOnceOps
  58. def flatten[B](implicit asIterable: (A) => IterableOnce[B]): View[B]

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

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

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

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

    the type of the elements of each iterable collection.

    asIterable

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

    returns

    a new sequence resulting from concatenating all element sequences.

    Definition Classes
    IterableOpsIterableOnceOps
  59. def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1

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

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

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

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    A1

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

    z

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

    op

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

    returns

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

    Definition Classes
    IterableOnceOps
  60. def foldLeft[B](z: B)(op: (B, A) => B): B

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator.

    z

    An initial value.

    op

    A binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
  61. def foldRight[B](z: B)(op: (A, B) => B): B

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the binary operator.

    z

    An initial value.

    op

    A binary operator.

    returns

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

    Definition Classes
    IndexedSeqOpsIterableOnceOps
  62. def forall(p: (A) => Boolean): Boolean

    Tests whether a predicate holds for all elements of this sequence.

    Tests whether a predicate holds for all elements of this sequence.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

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

    Definition Classes
    IterableOnceOps
  63. def foreach[U](f: (A) => U): Unit

    Applies f to each element for its side effects.

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

    Definition Classes
    IterableOnceOps
  64. def fromSpecific(coll: IterableOnce[A]): View[A]

    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
    IterableFactoryDefaultsIterableOps
    Note

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

    ,

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

  65. 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()
  66. def groupBy[K](f: (A) => K): immutable.Map[K, View[A]]

    Partitions this sequence into a map of sequences according to some discriminator function.

    Partitions this sequence into a map of sequences 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 sequences 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 sequence of those elements x for which f(x) equals k.

    Definition Classes
    IterableOps
  67. def groupMap[K, B](key: (A) => K)(f: (A) => B): immutable.Map[K, View[B]]

    Partitions this sequence into a map of sequences according to a discriminator function key.

    Partitions this sequence into a map of sequences 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
  68. def groupMapReduce[K, B](key: (A) => K)(f: (A) => B)(reduce: (B, B) => B): immutable.Map[K, B]

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

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

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

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

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

    Definition Classes
    IterableOps
  69. def grouped(size: Int): Iterator[View[A]]

    Partitions elements in fixed size sequences.

    Partitions elements in fixed size sequences.

    size

    the number of elements per group

    returns

    An iterator producing sequences 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

  70. 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
    AnyRef → Any
    Annotations
    @native()
  71. def head: A

    Selects the first element of this sequence.

    Selects the first element of this sequence.

    returns

    the first element of this sequence.

    Definition Classes
    IndexedSeqOpsIterableOps
    Exceptions thrown

    NoSuchElementException if the sequence is empty.

  72. def headOption: Option[A]

    Optionally selects the first element.

    Optionally selects the first element.

    returns

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

    Definition Classes
    IndexedSeqOpsIterableOps
  73. def indexOf[B >: A](elem: B): Int

    Finds index of first occurrence of some value in this sequence.

    Finds index of first occurrence of some value in this sequence.

    B

    the type of the element elem.

    elem

    the element value to search for.

    returns

    the index >= 0 of the first element of this sequence that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  74. def indexOf[B >: A](elem: B, from: Int): Int

    Finds index of first occurrence of some value in this sequence after or at some start index.

    Finds index of first occurrence of some value in this sequence after or at some start index.

    B

    the type of the element elem.

    elem

    the element value to search for.

    from

    the start index

    returns

    the index >= from of the first element of this sequence that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    SeqOps
  75. def indexOfSlice[B >: A](that: collection.Seq[B]): Int

    Finds first index where this sequence contains a given sequence as a slice.

    Finds first index where this sequence contains a given sequence as a slice.

    Note: may not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    the first index >= 0 such that the elements of this sequence starting at this index match the elements of sequence that, or -1 if no such subsequence exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  76. def indexOfSlice[B >: A](that: collection.Seq[B], from: Int): Int

    Finds first index after or at a start index where this sequence contains a given sequence as a slice.

    Finds first index after or at a start index where this sequence contains a given sequence as a slice.

    Note: may not terminate for infinite-sized collections.

    that

    the sequence to test

    from

    the start index

    returns

    the first index >= from such that the elements of this sequence starting at this index match the elements of sequence that, or -1 if no such subsequence exists.

    Definition Classes
    SeqOps
  77. def indexWhere(p: (A) => Boolean): Int

    Finds index of the first element satisfying some predicate.

    Finds index of the first element satisfying some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the index >= 0 of the first element of this sequence that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  78. def indexWhere(p: (A) => Boolean, from: Int): Int

    Finds index of the first element satisfying some predicate after or at some start index.

    Finds index of the first element satisfying some predicate after or at some start index.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    from

    the start index

    returns

    the index >= from of the first element of this sequence that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
  79. def indices: immutable.Range

    Produces the range of all indices of this sequence.

    Produces the range of all indices of this sequence.

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

    returns

    a Range value from 0 to one less than the length of this sequence.

    Definition Classes
    SeqOps
  80. def init: View[A]

    The initial part of the collection without its last element.

    The initial part of the collection without its last element.

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

    Definition Classes
    IterableOps
  81. def inits: Iterator[View[A]]

    Iterates over the inits of this sequence.

    Iterates over the inits of this sequence. The first value will be this sequence and the final one will be an empty sequence, 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 sequence

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

  82. def intersect[B >: A](that: collection.Seq[B]): View[A]

    Computes the multiset intersection between this sequence and another sequence.

    Computes the multiset intersection between this sequence and another sequence.

    that

    the sequence of elements to intersect with.

    returns

    a new sequence which contains all elements of this sequence which also appear in that. If an element value x appears n times in that, then the first n occurrences of x will be retained in the result, but any following occurrences will be omitted.

    Definition Classes
    SeqOps
  83. def isDefinedAt(idx: Int): Boolean

    Tests whether this sequence contains given index.

    Tests whether this sequence contains given index.

    The implementations of methods apply and isDefinedAt turn a Seq[A] into a PartialFunction[Int, A].

    idx

    the index to test

    returns

    true if this sequence contains an element at position idx, false otherwise.

    Definition Classes
    SeqOps
  84. def isEmpty: Boolean

    Tests whether the sequence is empty.

    Tests whether the sequence is empty.

    Note: The default implementation creates and discards an iterator.

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

    returns

    true if the sequence contains no elements, false otherwise.

    Definition Classes
    SeqOpsIterableOnceOps
  85. final def isInstanceOf[T0]: Boolean

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

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

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

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

    This is exactly equivalent to the type pattern _: T0

    returns

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

    Definition Classes
    Any
    Note

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

  86. def isTraversableAgain: Boolean

    Tests whether this sequence can be repeatedly traversed.

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

    returns

    true if it is repeatedly traversable, false otherwise.

    Definition Classes
    IterableOpsIterableOnceOps
  87. def iterableFactory: IterableFactory[View]

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

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

    Definition Classes
    ViewIterableIterableOps
    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).

  88. def iterator: Iterator[A]

    An scala.collection.Iterator over the elements of this sequence.

    An scala.collection.Iterator over the elements of this sequence.

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

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsIterableOnce
  89. def knownSize: Int

    The number of elements in this sequence, if it can be cheaply computed, -1 otherwise.

    The number of elements in this sequence, if it can be cheaply computed, -1 otherwise. Cheaply usually means: Not requiring a collection traversal.

    Definition Classes
    IndexedSeqOpsIterableOnce
  90. def last: A

    Selects the last element.

    Selects the last element.

    returns

    The last element of this sequence.

    Definition Classes
    IndexedSeqOpsIterableOps
    Exceptions thrown

    NoSuchElementException If the sequence is empty.

  91. def lastIndexOf[B >: A](elem: B, end: Int = length - 1): Int

    Finds index of last occurrence of some value in this sequence before or at a given end index.

    Finds index of last occurrence of some value in this sequence before or at a given end index.

    Note: will not terminate for infinite-sized collections.

    B

    the type of the element elem.

    elem

    the element value to search for.

    end

    the end index.

    returns

    the index <= end of the last element of this sequence that is equal (as determined by ==) to elem, or -1, if none exists.

    Definition Classes
    SeqOps
  92. def lastIndexOfSlice[B >: A](that: collection.Seq[B]): Int

    Finds last index where this sequence contains a given sequence as a slice.

    Finds last index where this sequence contains a given sequence as a slice.

    Note: will not terminate for infinite-sized collections.

    that

    the sequence to test

    returns

    the last index such that the elements of this sequence starting at this index match the elements of sequence that, or -1 if no such subsequence exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  93. def lastIndexOfSlice[B >: A](that: collection.Seq[B], end: Int): Int

    Finds last index before or at a given end index where this sequence contains a given sequence as a slice.

    Finds last index before or at a given end index where this sequence contains a given sequence as a slice.

    Note: will not terminate for infinite-sized collections.

    that

    the sequence to test

    end

    the end index

    returns

    the last index <= end such that the elements of this sequence starting at this index match the elements of sequence that, or -1 if no such subsequence exists.

    Definition Classes
    SeqOps
  94. def lastIndexWhere(p: (A) => Boolean): Int

    Finds index of last element satisfying some predicate.

    Finds index of last element satisfying some predicate.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the index of the last element of this sequence that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
    Annotations
    @deprecatedOverriding()
  95. def lastIndexWhere(p: (A) => Boolean, end: Int): Int

    Finds index of last element satisfying some predicate before or at given end index.

    Finds index of last element satisfying some predicate before or at given end index.

    Note: will not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the index <= end of the last element of this sequence that satisfies the predicate p, or -1, if none exists.

    Definition Classes
    SeqOps
  96. def lastOption: Option[A]

    Optionally selects the last element.

    Optionally selects the last element.

    returns

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

    Definition Classes
    IterableOps
  97. def lazyZip[B](that: collection.Iterable[B]): LazyZip2[A, B, ArrayBufferView.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
  98. def length: Int

    The length (number of elements) of the sequence.

    The length (number of elements) of the sequence. size is an alias for length in Seq collections.

    Definition Classes
    ArrayBufferViewSeqOps
  99. final def lengthCompare(that: collection.Iterable[_]): Int

    Compares the length of this sequence to the size of another Iterable.

    Compares the length of this sequence to the size of another Iterable.

    that

    the Iterable whose size is compared with this sequence's length.

    returns

    A value x where

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

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

    Definition Classes
    IndexedSeqOpsSeqOps
  100. final def lengthCompare(len: Int): Int

    Compares the length of this sequence to a test value.

    Compares the length of this sequence to a test value.

    len

    the test value that gets compared with the length.

    returns

    A value x where

    x <  0       if this.length <  len
    x == 0       if this.length == len
    x >  0       if this.length >  len

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

    Definition Classes
    IndexedSeqOpsSeqOps
    See also

    lengthIs

  101. final def lengthIs: SizeCompareOps

    Returns a value class containing operations for comparing the length of this sequence to a test value.

    Returns a value class containing operations for comparing the length of this sequence to a test value.

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

    this.lengthIs < len     // this.lengthCompare(len) < 0
    this.lengthIs <= len    // this.lengthCompare(len) <= 0
    this.lengthIs == len    // this.lengthCompare(len) == 0
    this.lengthIs != len    // this.lengthCompare(len) != 0
    this.lengthIs >= len    // this.lengthCompare(len) >= 0
    this.lengthIs > len     // this.lengthCompare(len) > 0
    Definition Classes
    SeqOps
    Annotations
    @inline()
  102. def map[B](f: (A) => B): IndexedSeqView[B]

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

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

    B

    the element type of the returned sequence.

    f

    the function to apply to each element.

    returns

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

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqViewIterableOpsIterableOnceOps
  103. def max[B >: A](implicit ord: math.Ordering[B]): A

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    the largest element of this sequence with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this sequence is empty.

  104. def maxBy[B](f: (A) => B)(implicit ord: math.Ordering[B]): A

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

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

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

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

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this sequence is empty.

  105. def maxByOption[B](f: (A) => B)(implicit ord: math.Ordering[B]): Option[A]

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

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

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

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

    Definition Classes
    IterableOnceOps
  106. def maxOption[B >: A](implicit ord: math.Ordering[B]): Option[A]

    Finds the largest element.

    Finds the largest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

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

    Definition Classes
    IterableOnceOps
  107. def min[B >: A](implicit ord: math.Ordering[B]): A

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

    the smallest element of this sequence with respect to the ordering ord.

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this sequence is empty.

  108. def minBy[B](f: (A) => B)(implicit ord: math.Ordering[B]): A

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

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

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

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

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this sequence is empty.

  109. def minByOption[B](f: (A) => B)(implicit ord: math.Ordering[B]): Option[A]

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

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

    Note: will not terminate for infinite-sized collections.

    B

    The result type of the function f.

    f

    The measuring function.

    returns

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

    Definition Classes
    IterableOnceOps
  110. def minOption[B >: A](implicit ord: math.Ordering[B]): Option[A]

    Finds the smallest element.

    Finds the smallest element.

    Note: will not terminate for infinite-sized collections.

    B

    The type over which the ordering is defined.

    ord

    An ordering to be used for comparing elements.

    returns

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

    Definition Classes
    IterableOnceOps
  111. final def mkString: String

    Displays all elements of this sequence in a string.

    Displays all elements of this sequence in a string.

    Delegates to addString, which can be overridden.

    returns

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

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

    Displays all elements of this sequence in a string using a separator string.

    Displays all elements of this sequence in a string using a separator string.

    Delegates to addString, which can be overridden.

    sep

    the separator string.

    returns

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

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

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

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

    Displays all elements of this sequence 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 sequence. 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 sequence are separated by the string sep.

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

  114. 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
  115. def newSpecificBuilder: Builder[A, View[A]]

    returns

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

    Attributes
    protected
    Definition Classes
    IterableFactoryDefaultsIterableOps
    Note

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

    ,

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

  116. def nonEmpty: Boolean

    Tests whether the sequence is not empty.

    Tests whether the sequence is not empty.

    returns

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

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding()
  117. 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

  118. 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

  119. def occCounts[B](sq: collection.Seq[B]): Map[B, Int]
    Attributes
    protected[collection]
    Definition Classes
    SeqOps
  120. def padTo[B >: A](len: Int, elem: B): View[B]

    A copy of this sequence with an element value appended until a given target length is reached.

    A copy of this sequence with an element value appended until a given target length is reached.

    B

    the element type of the returned sequence.

    len

    the target length

    elem

    the padding value

    returns

    a new sequence consisting of all elements of this sequence followed by the minimal number of occurrences of elem so that the resulting collection has a length of at least len.

    Definition Classes
    SeqOps
  121. def partition(p: (A) => Boolean): (View[A], View[A])

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

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

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

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

    Definition Classes
    IterableOps
  122. def partitionMap[A1, A2](f: (A) => Either[A1, A2]): (View[A1], View[A2])

    Applies a function f to each element of the sequence and returns a pair of sequences: 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 sequence and returns a pair of sequences: 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 = `Seq`(1, "one", 2, "two", 3, "three") partitionMap {
     case i: Int => Left(i)
     case s: String => Right(s)
    }
    // xs == (`Seq`(1, 2, 3),
    //        `Seq`(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 sequence to an scala.util.Either

    returns

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

    Definition Classes
    IterableOps
  123. def patch[B >: A](from: Int, other: IterableOnce[B], replaced: Int): View[B]

    Produces a new sequence where a slice of elements in this sequence is replaced by another sequence.

    Produces a new sequence where a slice of elements in this sequence is replaced by another sequence.

    Patching at negative indices is the same as patching starting at 0. Patching at indices at or larger than the length of the original sequence appends the patch to the end. If the replaced count would exceed the available elements, the difference in excess is ignored.

    B

    the element type of the returned sequence.

    from

    the index of the first replaced element

    other

    the replacement sequence

    replaced

    the number of elements to drop in the original sequence

    returns

    a new sequence consisting of all elements of this sequence except that replaced elements starting from from are replaced by all the elements of other.

    Definition Classes
    SeqOps
  124. def permutations: Iterator[View[A]]

    Iterates over distinct permutations of elements.

    Iterates over distinct permutations of elements.

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

    returns

    An Iterator which traverses the distinct permutations of this sequence.

    Definition Classes
    SeqOps
    Example:
    1. Seq('a', 'b', 'b').permutations.foreach(println)
      // List(a, b, b)
      // List(b, a, b)
      // List(b, b, a)
  125. def prepended[B >: A](elem: B): IndexedSeqView[B]

    A copy of the sequence with an element prepended.

    A copy of the sequence with an element prepended.

    Also, the original sequence is not modified, so you will want to capture the result.

    Example:

    scala> val x = List(1)
    x: List[Int] = List(1)
    
    scala> val y = 2 +: x
    y: List[Int] = List(2, 1)
    
    scala> println(x)
    List(1)
    B

    the element type of the returned sequence.

    elem

    the prepended element

    returns

    a new sequence consisting of value followed by all elements of this sequence.

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqViewSeqOps
  126. def prependedAll[B >: A](prefix: SomeIndexedSeqOps[B]): IndexedSeqView[B]
    Definition Classes
    ArrayBufferViewIndexedSeqView
  127. def prependedAll[B >: A](prefix: SomeSeqOps[B]): SeqView[B]
    Definition Classes
    SeqView
  128. def prependedAll[B >: A](prefix: IterableOnce[B]): View[B]

    As with :++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    As with :++, returns a new collection containing the elements from the left operand followed by the elements from the right operand.

    It differs from :++ in that the right operand determines the type of the resulting collection rather than the left one. Mnemonic: the COLon is on the side of the new COLlection type.

    B

    the element type of the returned collection.

    prefix

    the iterable to prepend.

    returns

    a new sequence which contains all elements of prefix followed by all the elements of this sequence.

    Definition Classes
    SeqOps
  129. def product[B >: A](implicit num: math.Numeric[B]): B

    Multiplies together the elements of this collection.

    Multiplies together the elements of this collection.

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

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the * operator.

    num

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

    returns

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

    Definition Classes
    IterableOnceOps
  130. def reduce[B >: A](op: (B, B) => B): B

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

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

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

    op

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

    returns

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

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this sequence is empty.

  131. def reduceLeft[B >: A](op: (B, A) => B): B

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

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

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

    op

    A binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this sequence is empty.

  132. def reduceLeftOption[B >: A](op: (B, A) => B): Option[B]

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

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

    op

    A binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
  133. def reduceOption[B >: A](op: (B, B) => B): Option[B]

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

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

    op

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

    returns

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

    Definition Classes
    IterableOnceOps
  134. def reduceRight[B >: A](op: (A, B) => B): B

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

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

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

    op

    A binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
    Exceptions thrown

    UnsupportedOperationException if this sequence is empty.

  135. def reduceRightOption[B >: A](op: (A, B) => B): Option[B]

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

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

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

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

    Note: will not terminate for infinite-sized collections.

    B

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

    op

    A binary operator.

    returns

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

    Definition Classes
    IterableOnceOps
  136. def reverse: IndexedSeqView[A]

    Returns a new sequence with the elements of this sequence in reverse order.

    Returns a new sequence with the elements of this sequence in reverse order.

    Note: will not terminate for infinite-sized collections.

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

    returns

    a new sequence with all elements of this sequence in reverse order.

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqViewSeqOps
  137. def reverseIterator: Iterator[A]

    An iterator yielding the elements of this sequence in reverse order.

    An iterator yielding the elements of this sequence in reverse order.

    Note: will not terminate for infinite-sized collections.

    Note: xs.reverseIterator is the same as xs.reverse.iterator but might be more efficient.

    returns

    an iterator yielding the elements of this sequence in reverse order.

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqOps
  138. def reversed: collection.Iterable[A]
    Attributes
    protected
    Definition Classes
    IndexedSeqOpsIterableOnceOps
  139. def sameElements[B >: A](that: IterableOnce[B]): Boolean

    Tests whether the elements of this collection are the same (and in the same order) as those of that.

    Tests whether the elements of this collection are the same (and in the same order) as those of that.

    Definition Classes
    SeqOps
  140. def scan[B >: A](z: B)(op: (B, B) => B): View[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 sequence containing the prefix scan of the elements in this sequence

    Definition Classes
    IterableOps
  141. def scanLeft[B](z: B)(op: (B, A) => B): View[B]

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

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

    Note: will not terminate for infinite-sized collections.

    B

    the type of the elements in the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    returns

    collection with intermediate results

    Definition Classes
    IterableOpsIterableOnceOps
  142. def scanRight[B](z: B)(op: (A, B) => B): View[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: 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
  143. def search[B >: A](elem: B, from: Int, to: Int)(implicit ord: math.Ordering[B]): SearchResult

    Searches within an interval in this sorted sequence for a specific element.

    Searches within an interval in this sorted sequence for a specific element. If this sequence is an IndexedSeq, a binary search is used. Otherwise, a linear search is used.

    The sequence should be sorted with the same Ordering before calling; otherwise, the results are undefined.

    elem

    the element to find.

    from

    the index where the search starts.

    to

    the index following where the search ends.

    ord

    the ordering to be used to compare elements.

    returns

    a Found value containing the index corresponding to the element in the sequence, or the InsertionPoint where the element would be inserted if the element is not in the sequence.

    Definition Classes
    IndexedSeqOpsSeqOps
    Note

    if to <= from, the search space is empty, and an InsertionPoint at from is returned

    See also

    scala.collection.IndexedSeq

    scala.math.Ordering

    scala.collection.SeqOps, method sorted

  144. def search[B >: A](elem: B)(implicit ord: math.Ordering[B]): SearchResult

    Searches this sorted sequence for a specific element.

    Searches this sorted sequence for a specific element. If the sequence is an IndexedSeq, a binary search is used. Otherwise, a linear search is used.

    The sequence should be sorted with the same Ordering before calling; otherwise, the results are undefined.

    elem

    the element to find.

    ord

    the ordering to be used to compare elements.

    returns

    a Found value containing the index corresponding to the element in the sequence, or the InsertionPoint where the element would be inserted if the element is not in the sequence.

    Definition Classes
    IndexedSeqOpsSeqOps
    See also

    scala.collection.IndexedSeq

    scala.math.Ordering

    scala.collection.SeqOps, method sorted

  145. def segmentLength(p: (A) => Boolean, from: Int): Int

    Computes the length of the longest segment that starts from some index and whose elements all satisfy some predicate.

    Computes the length of the longest segment that starts from some index and whose elements all satisfy some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    from

    the index where the search starts.

    returns

    the length of the longest segment of this sequence starting from index from such that every element of the segment satisfies the predicate p.

    Definition Classes
    SeqOps
  146. final def segmentLength(p: (A) => Boolean): Int

    Computes the length of the longest segment that starts from the first element and whose elements all satisfy some predicate.

    Computes the length of the longest segment that starts from the first element and whose elements all satisfy some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the length of the longest segment of this sequence that starts from the first element such that every element of the segment satisfies the predicate p.

    Definition Classes
    SeqOps
  147. final def size: Int

    The size of this sequence.

    The size of this sequence.

    Note: will not terminate for infinite-sized collections.

    returns

    the number of elements in this sequence.

    Definition Classes
    SeqOpsIterableOnceOps
  148. final def sizeCompare(that: collection.Iterable[_]): Int

    Compares the size of this sequence to the size of another Iterable.

    Compares the size of this sequence to the size of another Iterable.

    that

    the Iterable whose size is compared with this sequence'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
    SeqOpsIterableOps
  149. final def sizeCompare(otherSize: Int): Int

    Compares the size of this sequence to a test value.

    Compares the size of this sequence 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
    SeqOpsIterableOps
    See also

    sizeIs

  150. final def sizeIs: SizeCompareOps

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

    Returns a value class containing operations for comparing the size of this sequence 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()
  151. def slice(from: Int, until: Int): IndexedSeqView[A]

    Selects an interval of elements.

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

    from <= indexOf(x) < until
    from

    the lowest index to include from this sequence.

    until

    the lowest index to EXCLUDE from this sequence.

    returns

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

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsIterableOpsIterableOnceOps
  152. def sliding(size: Int, step: Int): Iterator[View[A]]

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

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

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

    size

    the number of elements per group

    step

    the distance between the first elements of successive groups

    returns

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

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

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

    See also

    scala.collection.Iterator, method sliding

  153. def sliding(size: Int): Iterator[View[A]]

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

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

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

    size

    the number of elements per group

    returns

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

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

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

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

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

    See also

    scala.collection.Iterator, method sliding

  154. def sortBy[B](f: (A) => B)(implicit ord: Ordering[B]): View[A]

    Sorts this sequence according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

    Sorts this sequence according to the Ordering which results from transforming an implicitly given Ordering with a transformation function.

    Note: will not terminate for infinite-sized collections.

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

    The sort is stable. That is, elements that are equal (as determined by ord.compare) appear in the same order in the sorted sequence as in the original.

    B

    the target type of the transformation f, and the type where the ordering ord is defined.

    f

    the transformation function mapping elements to some other domain B.

    ord

    the ordering assumed on domain B.

    returns

    a sequence consisting of the elements of this sequence sorted according to the ordering where x < y if ord.lt(f(x), f(y)).

    Definition Classes
    SeqOps
    Example:
    1. val words = "The quick brown fox jumped over the lazy dog".split(' ')
      // this works because scala.Ordering will implicitly provide an Ordering[Tuple2[Int, Char]]
      words.sortBy(x => (x.length, x.head))
      res0: Array[String] = Array(The, dog, fox, the, lazy, over, brown, quick, jumped)
    See also

    scala.math.Ordering

  155. def sortWith(lt: (A, A) => Boolean): View[A]

    Sorts this sequence according to a comparison function.

    Sorts this sequence according to a comparison function.

    Note: will not terminate for infinite-sized collections.

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

    The sort is stable. That is, elements that are equal (lt returns false for both directions of comparison) appear in the same order in the sorted sequence as in the original.

    lt

    a predicate that is true if its first argument strictly precedes its second argument in the desired ordering.

    returns

    a sequence consisting of the elements of this sequence sorted according to the comparison function lt.

    Definition Classes
    SeqOps
    Example:
    1. List("Steve", "Bobby", "Tom", "John", "Bob").sortWith((x, y) => x.take(3).compareTo(y.take(3)) < 0) =
      List("Bobby", "Bob", "John", "Steve", "Tom")
  156. def sorted[B >: A](implicit ord: Ordering[B]): SeqView[A]

    Sorts this sequence according to an Ordering.

    Sorts this sequence according to an Ordering.

    The sort is stable. That is, elements that are equal (as determined by ord.compare) appear in the same order in the sorted sequence as in the original.

    ord

    the ordering to be used to compare elements.

    returns

    a sequence consisting of the elements of this sequence sorted according to the ordering ord.

    Definition Classes
    SeqViewSeqOps
    See also

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

  157. def span(p: (A) => Boolean): (View[A], View[A])

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

    Splits this sequence 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.

    p

    the test predicate

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  158. def splitAt(n: Int): (View[A], View[A])

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

    Splits this sequence 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).

    n

    the position at which to split.

    returns

    a pair of sequences consisting of the first n elements of this sequence, and the other elements.

    Definition Classes
    IterableOpsIterableOnceOps
  159. def startsWith[B >: A](that: IterableOnce[B], offset: Int = 0): Boolean

    Tests whether this sequence contains the given sequence at a given index.

    Tests whether this sequence contains the given sequence at a given index.

    Note: If the both the receiver object this and the argument that are infinite sequences this method may not terminate.

    that

    the sequence to test

    offset

    the index where the sequence is searched.

    returns

    true if the sequence that is contained in this sequence at index offset, otherwise false.

    Definition Classes
    SeqOps
  160. def stepper[S <: Stepper[_]](implicit shape: StepperShape[A, S]): S with EfficientSplit

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

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

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

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

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

    Definition Classes
    IndexedSeqOpsIterableOnce
  161. def stringPrefix: String
    Attributes
    protected[this]
    Definition Classes
    IndexedSeqViewSeqViewViewIterable
    Annotations
    @nowarn()
  162. def sum[B >: A](implicit num: math.Numeric[B]): B

    Sums the elements of this collection.

    Sums the elements of this collection.

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

    Note: will not terminate for infinite-sized collections.

    B

    the result type of the + operator.

    num

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

    returns

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

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

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

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

    returns

    the result of body

    Definition Classes
    AnyRef
  164. def tail: View[A]

    The rest of the collection without its first element.

    The rest of the collection without its first element.

    Definition Classes
    IterableOps
  165. def tails: Iterator[View[A]]

    Iterates over the tails of this sequence.

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

    returns

    an iterator over all the tails of this sequence

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

  166. def take(n: Int): IndexedSeqView[A]

    Selects the first n elements.

    Selects the first n elements.

    n

    the number of elements to take from this sequence.

    returns

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

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqViewIterableOpsIterableOnceOps
  167. def takeRight(n: Int): IndexedSeqView[A]

    Selects the last n elements.

    Selects the last n elements.

    n

    the number of elements to take from this sequence.

    returns

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

    Definition Classes
    ArrayBufferViewIndexedSeqViewIndexedSeqOpsSeqViewIterableOps
  168. def takeWhile(p: (A) => Boolean): View[A]

    Takes longest prefix of elements that satisfy a predicate.

    Takes longest prefix of elements that satisfy a predicate.

    p

    The predicate used to test elements.

    returns

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

    Definition Classes
    IterableOpsIterableOnceOps
  169. def tapEach[U](f: (A) => U): IndexedSeqView[A]

    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 sequence

    returns

    The same logical collection as this

    Definition Classes
    ArrayBufferViewIndexedSeqViewSeqViewIterableOpsIterableOnceOps
  170. def to[C1](factory: Factory[A, C1]): C1

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

    Given a collection factory factory, converts this sequence 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
  171. def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]

    Converts this sequence to an Array.

    Converts this sequence to an Array.

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

    B

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

    returns

    This sequence as an Array[B].

    Definition Classes
    IterableOnceOps
  172. final def toBuffer[B >: A]: Buffer[B]

    Converts this sequence to a Buffer.

    Converts this sequence to a Buffer.

    B

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

    returns

    This sequence as a Buffer[B].

    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  173. def toIndexedSeq: immutable.IndexedSeq[A]

    Converts this sequence to an IndexedSeq.

    Converts this sequence to an IndexedSeq.

    returns

    This sequence as an IndexedSeq[A].

    Definition Classes
    IterableOnceOps
  174. def toList: immutable.List[A]

    Converts this sequence to a List.

    Converts this sequence to a List.

    returns

    This sequence as a List[A].

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

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

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

    K

    The key type for the resulting map.

    V

    The value type for the resulting map.

    ev

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

    returns

    This sequence as a Map[K, V].

    Definition Classes
    IterableOnceOps
  176. def toSeq: immutable.Seq[A]

    returns

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

    Definition Classes
    IterableOnceOps
  177. def toSet[B >: A]: immutable.Set[B]

    Converts this sequence to a Set.

    Converts this sequence to a Set.

    B

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

    returns

    This sequence as a Set[B].

    Definition Classes
    IterableOnceOps
  178. def toString(): String

    Converts this sequence to a string.

    Converts this sequence to a string.

    returns

    a string representation of this collection. By default this string consists of the className of this sequence, followed by all elements separated by commas and enclosed in parentheses.

    Definition Classes
    ViewIterable → AnyRef → Any
  179. def toVector: immutable.Vector[A]

    Converts this sequence to a Vector.

    Converts this sequence to a Vector.

    returns

    This sequence as a Vector[A].

    Definition Classes
    IterableOnceOps
  180. def transpose[B](implicit asIterable: (A) => collection.Iterable[B]): View[View[B]]

    Transposes this sequence of iterable collections into a sequence of sequences.

    Transposes this sequence of iterable collections into a sequence of sequences.

    The resulting collection's type will be guided by the static type of sequence. 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 sequence is an Iterable.

    returns

    a two-dimensional sequence of sequences which has as nth row the nth column of this sequence.

    Definition Classes
    IterableOps
    Exceptions thrown

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

  181. def unzip[A1, A2](implicit asPair: (A) => (A1, A2)): (View[A1], View[A2])

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

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

    val xs = `Seq`(
               (1, "one"),
               (2, "two"),
               (3, "three")).unzip
    // xs == (`Seq`(1, 2, 3),
    //        `Seq`(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 sequence is a pair.

    returns

    a pair of sequences, containing the first, respectively second half of each element pair of this sequence.

    Definition Classes
    IterableOps
  182. def unzip3[A1, A2, A3](implicit asTriple: (A) => (A1, A2, A3)): (View[A1], View[A2], View[A3])

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

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

    val xs = `Seq`(
               (1, "one", '1'),
               (2, "two", '2'),
               (3, "three", '3')).unzip3
    // xs == (`Seq`(1, 2, 3),
    //        `Seq`(one, two, three),
    //        `Seq`(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 sequence is a triple.

    returns

    a triple of sequences, containing the first, second, respectively third member of each element triple of this sequence.

    Definition Classes
    IterableOps
  183. def updated[B >: A](index: Int, elem: B): View[B]

    A copy of this sequence with one single replaced element.

    A copy of this sequence with one single replaced element.

    B

    the element type of the returned sequence.

    index

    the position of the replacement

    elem

    the replacing element

    returns

    a new sequence which is a copy of this sequence with the element at position index replaced by elem.

    Definition Classes
    SeqOps
    Exceptions thrown

    IndexOutOfBoundsException if index does not satisfy 0 <= index < length. In case of a lazy collection this exception may be thrown at a later time or not at all (if the end of the collection is never evaluated).

  184. def view: IndexedSeqView[A]

    A view over the elements of this collection.

    A view over the elements of this collection.

    Definition Classes
    IndexedSeqViewSeqViewViewIndexedSeqOpsSeqOpsIterableOps
  185. final def wait(): Unit

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

    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
    Note

    not specified by SLS as a member of AnyRef

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

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

    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
    Note

    not specified by SLS as a member of AnyRef

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

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

    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
    Note

    not specified by SLS as a member of AnyRef

  188. def withFilter(p: (A) => Boolean): WithFilter[A, [_]View[_]]

    Creates a non-strict filter of this sequence.

    Creates a non-strict filter of this sequence.

    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.

    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 sequence which satisfy the predicate p.

    Definition Classes
    IterableOps
  189. def zip[B](that: IterableOnce[B]): View[(A, B)]

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

    Returns a sequence formed from this sequence 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 sequence containing pairs consisting of corresponding elements of this sequence and that. The length of the returned collection is the minimum of the lengths of this sequence and that.

    Definition Classes
    IterableOps
  190. def zipAll[A1 >: A, B](that: collection.Iterable[B], thisElem: A1, thatElem: B): View[(A1, B)]

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

    Returns a sequence formed from this sequence 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 sequence is shorter than that.

    thatElem

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

    returns

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

    Definition Classes
    IterableOps
  191. def zipWithIndex: View[(A, Int)]

    Zips this sequence with its indices.

    Zips this sequence with its indices.

    returns

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

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

Deprecated Value Members

  1. def /:[B](z: B)(op: (B, A) => B): B
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A])./:(z)(op)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.foldLeft instead

  2. final def /:[B](z: B)(op: (B, A) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use foldLeft instead of /:

  3. def :\[B](z: B)(op: (A, B) => B): B
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A]).:\(z)(op)
    Definition Classes
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    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.foldRight instead

  4. final def :\[B](z: B)(op: (A, B) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use foldRight instead of :\

  5. def aggregate[B](z: => B)(seqop: (B, A) => B, combop: (B, B) => B): B

    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

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

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

    B

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

    z

    the start value, a neutral element for seqop.

    seqop

    the binary operator used to accumulate the result.

    combop

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

    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated
    Deprecated

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

  6. def array: Array[AnyRef]
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.7) never intended to be public

  7. def collectFirst[B](f: PartialFunction[A, B]): Option[B]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A]).collectFirst(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.collectFirst(...) instead

  8. def companion: IterableFactory[[_]View[_]]
    Definition Classes
    IterableOps
    Annotations
    @deprecated @deprecatedOverriding() @inline()
    Deprecated

    (Since version 2.13.0) Use iterableFactory instead

  9. def copyToBuffer(dest: Buffer[A]): Unit
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A]).copyToBuffer(dest)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.copyToBuffer(...) instead

  10. final def copyToBuffer[B >: A](dest: Buffer[B]): Unit
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use dest ++= coll instead

  11. def count(f: (A) => Boolean): Int
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A]).count(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.count(...) instead

  12. def exists(f: (A) => Boolean): Boolean
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A]).exists(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.exists(...) instead

  13. def filter(f: (A) => Boolean): Iterator[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
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    Definition Classes
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    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.filter(...) instead

  14. def find(p: (A) => Boolean): Option[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] performed by method iterableOnceExtensionMethods in scala.collection.IterableOnce.
    Shadowing
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  15. def flatMap[B](f: (A) => IterableOnce[B]): IterableOnce[B]
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  16. def fold[A1 >: A](z: A1)(op: (A1, A1) => A1): A1
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  17. def foldLeft[B](z: B)(op: (B, A) => B): B
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  18. def foldRight[B](z: B)(op: (A, B) => B): B
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  19. def forall(f: (A) => Boolean): Boolean
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  20. def force: collection.IndexedSeq[A]
    Definition Classes
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    (Since version 2.13.0) Views no longer know about their underlying collection type; .force always returns an IndexedSeq

  21. def foreach[U](f: (A) => U): Unit
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  22. 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
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    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  23. def hasDefiniteSize: Boolean

    Tests whether this sequence is known to have a finite size.

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

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

    returns

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

    Definition Classes
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    (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

  24. def isEmpty: Boolean
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  25. def map[B](f: (A) => B): IterableOnce[B]
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  26. def max(implicit ord: math.Ordering[A]): A
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  27. def maxBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A
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  28. def min(implicit ord: math.Ordering[A]): A
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  29. def minBy[B](f: (A) => B)(implicit cmp: math.Ordering[B]): A
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  30. def mkString: String
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  31. def mkString(sep: String): String
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  32. def mkString(start: String, sep: String, end: String): String
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  33. def nonEmpty: Boolean
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  34. final def prefixLength(p: (A) => Boolean): Int

    Returns the length of the longest prefix whose elements all satisfy some predicate.

    Returns the length of the longest prefix whose elements all satisfy some predicate.

    Note: may not terminate for infinite-sized collections.

    p

    the predicate used to test elements.

    returns

    the length of the longest prefix of this sequence such that every element of the segment satisfies the predicate p.

    Definition Classes
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    Deprecated

    (Since version 2.13.0) Use segmentLength instead of prefixLength

  35. def product(implicit num: math.Numeric[A]): A
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  36. def reduce(f: (A, A) => A): A
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  37. def reduceLeft(f: (A, A) => A): A
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  38. def reduceLeftOption(f: (A, A) => A): Option[A]
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  39. def reduceOption(f: (A, A) => A): Option[A]
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  40. def reduceRight(f: (A, A) => A): A
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  41. def reduceRightOption(f: (A, A) => A): Option[A]
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  42. final def repr: View[A]
    Definition Classes
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    (Since version 2.13.0) Use coll instead of repr in a collection implementation, use the collection value itself from the outside

  43. def reverseMap[B](f: (A) => B): View[B]
    Definition Classes
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    (Since version 2.13.0) Use .reverseIterator.map(f).to(...) instead of .reverseMap(f)

  44. def sameElements[B >: A](that: IterableOnce[B]): Boolean
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  45. def seq: ArrayBufferView.this.type
    Definition Classes
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    (Since version 2.13.0) Iterable.seq always returns the iterable itself

  46. def size: Int
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  47. def sum(implicit num: math.Numeric[A]): A
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  48. def to[C1](factory: Factory[A, C1]): C1
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  49. def toArray[B >: A](implicit arg0: ClassTag[B]): Array[B]
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  50. def toBuffer[B >: A]: Buffer[B]
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  51. def toIndexedSeq: collection.IndexedSeq[A]
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  52. final def toIterable: collection.Iterable[A]
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  53. final def toIterable: ArrayBufferView.this.type

    returns

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

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

  54. def toIterator: Iterator[A]
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  55. final def toIterator: Iterator[A]
    Definition Classes
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    (Since version 2.13.0) Use .iterator instead of .toIterator

  56. def toList: immutable.List[A]
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  57. def toMap[K, V](implicit ev: <:<[A, (K, V)]): immutable.Map[K, V]
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  58. def toSeq: immutable.Seq[A]
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  59. def toSet[B >: A]: immutable.Set[B]
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  60. def toStream: immutable.Stream[A]
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  61. final def toStream: immutable.Stream[A]
    Definition Classes
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    (Since version 2.13.0) Use .to(LazyList) instead of .toStream

  62. final def toTraversable: collection.Traversable[A]
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  63. final def toTraversable: collection.Traversable[A]

    Converts this sequence to an unspecified Iterable.

    Converts this sequence to an unspecified Iterable. Will return the same collection if this instance is already Iterable.

    returns

    An Iterable containing all elements of this sequence.

    Definition Classes
    IterableOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) toTraversable is internal and will be made protected; its name is similar to toList or toSeq, but it doesn't copy non-immutable collections

  64. def toVector: immutable.Vector[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A]).toVector
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator.to(Vector) instead

  65. final def union[B >: A](that: collection.Seq[B]): View[B]

    Produces a new sequence which contains all elements of this sequence and also all elements of a given sequence.

    Produces a new sequence which contains all elements of this sequence and also all elements of a given sequence. xs union ys is equivalent to xs ++ ys.

    B

    the element type of the returned sequence.

    that

    the sequence to add.

    returns

    a new collection which contains all elements of this sequence followed by all elements of that.

    Definition Classes
    SeqOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use concat instead

  66. def view(from: Int, until: Int): IndexedSeqView[A]

    A view over a slice of the elements of this collection.

    A view over a slice of the elements of this collection.

    Definition Classes
    IndexedSeqViewIndexedSeqOpsIterableOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .view.slice(from, until) instead of .view(from, until)

  67. def withFilter(f: (A) => Boolean): Iterator[A]
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toIterableOnceExtensionMethods[A] 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:
    (arrayBufferView: IterableOnceExtensionMethods[A]).withFilter(f)
    Definition Classes
    IterableOnceExtensionMethods
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use .iterator.withFilter(...) instead

  68. def [B](y: B): (ArrayBufferView[A], B)
    Implicit
    This member is added by an implicit conversion from ArrayBufferView[A] toArrowAssoc[ArrayBufferView[A]] performed by method ArrowAssoc in scala.Predef.
    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 AbstractIndexedSeqView[A]

Inherited from IndexedSeqView[A]

Inherited from collection.IndexedSeqOps[A, View, View[A]]

Inherited from AbstractSeqView[A]

Inherited from SeqView[A]

Inherited from collection.SeqOps[A, View, View[A]]

Inherited from AbstractView[A]

Inherited from View[A]

Inherited from java.io.Serializable

Inherited from collection.AbstractIterable[A]

Inherited from collection.Iterable[A]

Inherited from IterableFactoryDefaults[A, [x]View[x]]

Inherited from IterableOps[A, [_]View[_], View[A]]

Inherited from IterableOnceOps[A, [_]View[_], View[A]]

Inherited from IterableOnce[A]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion iterableOnceExtensionMethods fromArrayBufferView[A] to IterableOnceExtensionMethods[A]

Inherited by implicit conversion any2stringadd fromArrayBufferView[A] to any2stringadd[ArrayBufferView[A]]

Inherited by implicit conversion StringFormat fromArrayBufferView[A] to StringFormat[ArrayBufferView[A]]

Inherited by implicit conversion Ensuring fromArrayBufferView[A] to Ensuring[ArrayBufferView[A]]

Inherited by implicit conversion ArrowAssoc fromArrayBufferView[A] to ArrowAssoc[ArrayBufferView[A]]

Ungrouped