Class

scala.collection.parallel.mutable.ParHashTable

EntryIterator

Related Doc: package ParHashTable

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abstract class EntryIterator[T, +IterRepr <: IterableSplitter[T]] extends IterableSplitter[T] with SizeMapUtils

A parallel iterator returning all the entries.

Source
ParHashTable.scala
Linear Supertypes
SizeMapUtils, IterableSplitter[T], DelegatedSignalling, Signalling, Splitter[T], AugmentedIterableIterator[T], RemainsIterator[T], Iterator[T], TraversableOnce[T], GenTraversableOnce[T], AnyRef, Any
Known Subclasses
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. EntryIterator
  2. SizeMapUtils
  3. IterableSplitter
  4. DelegatedSignalling
  5. Signalling
  6. Splitter
  7. AugmentedIterableIterator
  8. RemainsIterator
  9. Iterator
  10. TraversableOnce
  11. GenTraversableOnce
  12. AnyRef
  13. Any
Implicitly
  1. by MonadOps
  2. by CollectionsHaveToParArray
  3. by any2stringadd
  4. by StringFormat
  5. by Ensuring
  6. by ArrowAssoc
  7. by alternateImplicit
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new EntryIterator(idx: Int, until: Int, totalsize: Int, es: Entry)

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Type Members

  1. class Appended[U >: T, PI <: IterableSplitter[U]] extends IterableSplitter[U]

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    Definition Classes
    IterableSplitter
  2. class GroupedIterator[B >: A] extends AbstractIterator[Seq[B]] with Iterator[Seq[B]]

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    A flexible iterator for transforming an Iterator[A] into an Iterator[Seq[A]], with configurable sequence size, step, and strategy for dealing with elements which don't fit evenly.

    A flexible iterator for transforming an Iterator[A] into an Iterator[Seq[A]], with configurable sequence size, step, and strategy for dealing with elements which don't fit evenly.

    Typical uses can be achieved via methods grouped and sliding.

    Definition Classes
    Iterator
  3. class Mapped[S] extends IterableSplitter[S]

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    Definition Classes
    IterableSplitter
  4. class Taken extends IterableSplitter[T]

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    Definition Classes
    IterableSplitter
  5. class Zipped[S] extends IterableSplitter[(T, S)]

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    Definition Classes
    IterableSplitter
  6. class ZippedAll[U >: T, S] extends IterableSplitter[(U, S)]

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    Definition Classes
    IterableSplitter

Abstract Value Members

  1. abstract def entry2item(e: Entry): T

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  2. abstract def newIterator(idxFrom: Int, idxUntil: Int, totalSize: Int, es: Entry): IterRepr

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Concrete Value Members

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

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    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

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    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

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    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to any2stringadd[EntryIterator[T, IterRepr]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ++(that: ⇒ Iterator[T]): Iterator[T]

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    [use case] Concatenates this iterator with another.

    [use case]

    Concatenates this iterator with another.

    that

    the other iterator

    returns

    a new iterator that first yields the values produced by this iterator followed by the values produced by iterator that.

    Definition Classes
    Iterator
    Full Signature

    def ++[B >: T](that: ⇒ GenTraversableOnce[B]): Iterator[B]

  5. def ->[B](y: B): (EntryIterator[T, IterRepr], B)

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    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to ArrowAssoc[EntryIterator[T, IterRepr]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  6. def /:[B](z: B)(op: (B, T) ⇒ B): B

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    Applies a binary operator to a start value and all elements of this traversable or iterator, going left to right.

    Applies a binary operator to a start value and all elements of this traversable or iterator, going left to right.

    Note: /: is alternate syntax for foldLeft; z /: xs is the same as xs foldLeft z.

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = (5 /: a)(_+_)
    b: Int = 15
    
    scala> val c = (5 /: a)((x,y) => x + y)
    c: Int = 15

    Note: will not terminate for infinite-sized collections.

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

    B

    the result type of the binary operator.

    z

    the start value.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this traversable or iterator, going left to right with the start value z on the left:

    op(...op(op(z, x_1), x_2), ..., x_n)

    where x1, ..., xn are the elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  7. def :\[B](z: B)(op: (T, B) ⇒ B): B

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    Applies a binary operator to all elements of this traversable or iterator and a start value, going right to left.

    Applies a binary operator to all elements of this traversable or iterator and a start value, going right to left.

    Note: :\ is alternate syntax for foldRight; xs :\ z is the same as xs foldRight z.

    Note: will not terminate for infinite-sized collections.

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

    Examples:

    Note that the folding function used to compute b is equivalent to that used to compute c.

    scala> val a = List(1,2,3,4)
    a: List[Int] = List(1, 2, 3, 4)
    
    scala> val b = (a :\ 5)(_+_)
    b: Int = 15
    
    scala> val c = (a :\ 5)((x,y) => x + y)
    c: Int = 15
    B

    the result type of the binary operator.

    z

    the start value

    op

    the binary operator

    returns

    the result of inserting op between consecutive elements of this traversable or iterator, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  8. final def ==(arg0: Any): Boolean

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    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
  9. def abort(): Unit

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    Sends an abort signal to other workers.

    Sends an abort signal to other workers.

    Abort flag being true means that a worker can abort and produce whatever result, since its result will not affect the final result of computation. An example of operations using this are find, forall and exists methods.

    Definition Classes
    DelegatedSignallingSignalling
  10. def addString(b: StringBuilder): StringBuilder

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    Appends all elements of this traversable or iterator to a string builder.

    Appends all elements of this traversable or iterator to a string builder. The written text consists of the string representations (w.r.t. the method toString) of all elements of this traversable or iterator 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
    TraversableOnce
  11. def addString(b: StringBuilder, sep: String): StringBuilder

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    Appends all elements of this traversable or iterator to a string builder using a separator string.

    Appends all elements of this traversable or iterator 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 traversable or iterator, 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
    TraversableOnce
  12. def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder

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

    Appends all elements of this traversable or iterator 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 traversable or iterator 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
    TraversableOnce
  13. def aggregate[B](z: ⇒ B)(seqop: (B, T) ⇒ B, combop: (B, B) ⇒ B): B

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    Aggregates the results of applying an operator to subsequent elements.

    Aggregates the results of applying an operator to subsequent elements.

    This is a more general form of fold and reduce. It is similar to foldLeft in that it doesn't require the result to be a supertype of the element type. In addition, it allows parallel collections to be processed in chunks, and then combines the intermediate results.

    aggregate splits the traversable or iterator into partitions and processes each partition by sequentially applying seqop, starting with z (like foldLeft). Those intermediate results are then combined by using combop (like fold). The implementation of this operation may operate on an arbitrary number of collection partitions (even 1), so combop may be invoked an arbitrary number of times (even 0).

    As an example, consider summing up the integer values of a list of chars. The initial value for the sum is 0. First, seqop transforms each input character to an Int and adds it to the sum (of the partition). Then, combop just needs to sum up the intermediate results of the partitions:

    List('a', 'b', 'c').aggregate(0)({ (sum, ch) => sum + ch.toInt }, { (p1, p2) => p1 + p2 })
    B

    the type of accumulated results

    z

    the initial value for the accumulated result of the partition - this will typically be the neutral element for the seqop operator (e.g. Nil for list concatenation or 0 for summation) and may be evaluated more than once

    seqop

    an operator used to accumulate results within a partition

    combop

    an associative operator used to combine results from different partitions

    Definition Classes
    TraversableOnceGenTraversableOnce
  14. def appendParIterable[U >: T, PI <: IterableSplitter[U]](that: PI): Appended[U, PI]

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    Definition Classes
    IterableSplitter
  15. final def asInstanceOf[T0]: T0

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    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.

  16. def buffered: BufferedIterator[T]

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    Creates a buffered iterator from this iterator.

    Creates a buffered iterator from this iterator.

    returns

    a buffered iterator producing the same values as this iterator.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

    See also

    scala.collection.BufferedIterator

  17. def buildString(closure: ((String) ⇒ Unit) ⇒ Unit): String

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    Attributes
    protected
    Definition Classes
    IterableSplitter
  18. def calcNumElems(from: Int, until: Int, tableLength: Int, sizeMapBucketSize: Int): Int

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    Attributes
    protected
    Definition Classes
    SizeMapUtils
  19. def clone(): AnyRef

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    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

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

    not specified by SLS as a member of AnyRef

  20. def collect[B](pf: PartialFunction[T, B]): Iterator[B]

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    Creates an iterator by transforming values produced by this iterator with a partial function, dropping those values for which the partial function is not defined.

    Creates an iterator by transforming values produced by this iterator with a partial function, dropping those values for which the partial function is not defined.

    pf

    the partial function which filters and maps the iterator.

    returns

    a new iterator which yields each value x produced by this iterator for which pf is defined the image pf(x).

    Definition Classes
    Iterator
    Annotations
    @migration
    Migration

    (Changed in version 2.8.0) collect has changed. The previous behavior can be reproduced with toSeq.

    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  21. def collect2combiner[S, That](pf: PartialFunction[T, S], cb: Combiner[S, That]): Combiner[S, That]

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    Definition Classes
    AugmentedIterableIterator
  22. def collectFirst[B](pf: PartialFunction[T, B]): Option[B]

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

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

    Note: may not terminate for infinite-sized collections.

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

    pf

    the partial function

    returns

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

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

  23. def contains(elem: Any): Boolean

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

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

    Note: may not terminate for infinite iterators.

    elem

    the element to test.

    returns

    true if this iterator produces some value that is is equal (as determined by ==) to elem, false otherwise.

    Definition Classes
    Iterator
    Note

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

  24. def copy2builder[U >: T, Coll, Bld <: Builder[U, Coll]](b: Bld): Bld

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    Definition Classes
    AugmentedIterableIterator
  25. def copyToArray(xs: Array[A], start: Int, len: Int): Unit

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    [use case] Copies selected values produced by this iterator to an array.

    [use case]

    Copies selected values produced by this iterator to an array. Fills the given array xs starting at index start with at most len values produced by this iterator. Copying will stop once either the end of the current iterator is reached, or the end of the array is reached, or len elements have been copied.

    Note: will not terminate for infinite iterators.

    xs

    the array to fill.

    start

    the starting index.

    len

    the maximal number of elements to copy.

    Definition Classes
    AugmentedIterableIterator → IteratorTraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[U >: T](array: Array[U], from: Int, len: Int): Unit

  26. def copyToArray(xs: Array[A]): Unit

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    [use case] Copies the elements of this traversable or iterator to an array.

    [use case]

    Copies the elements of this traversable or iterator to an array. Fills the given array xs with values of this traversable or iterator. Copying will stop once either the end of the current traversable or iterator is reached, or the end of the target array is reached.

    Note: will not terminate for infinite iterators.

    xs

    the array to fill.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: T](xs: Array[B]): Unit

  27. def copyToArray(xs: Array[A], start: Int): Unit

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    [use case] Copies the elements of this traversable or iterator to an array.

    [use case]

    Copies the elements of this traversable or iterator to an array. Fills the given array xs with values of this traversable or iterator, beginning at index start. Copying will stop once either the end of the current traversable or iterator is reached, or the end of the target array is reached.

    Note: will not terminate for infinite iterators.

    xs

    the array to fill.

    start

    the starting index.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def copyToArray[B >: T](xs: Array[B], start: Int): Unit

  28. def copyToBuffer[B >: T](dest: Buffer[B]): Unit

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    Copies all elements of this traversable or iterator to a buffer.

    Copies all elements of this traversable or iterator to a buffer.

    Note: will not terminate for infinite-sized collections.

    dest

    The buffer to which elements are copied.

    Definition Classes
    TraversableOnce
  29. def corresponds[B](that: GenTraversableOnce[B])(p: (T, B) ⇒ Boolean): Boolean

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

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

    B

    the type of the elements of that

    that

    the other collection

    p

    the test predicate, which relates elements from both collections

    returns

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

    Definition Classes
    Iterator
  30. def count(p: (T) ⇒ Boolean): Int

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    Counts the number of elements in the traversable or iterator which satisfy a predicate.

    Counts the number of elements in the traversable or iterator which satisfy a predicate.

    p

    the predicate used to test elements.

    returns

    the number of elements satisfying the predicate p.

    Definition Classes
    AugmentedIterableIterator → TraversableOnceGenTraversableOnce
  31. def countBucketSizes(fromBucket: Int, untilBucket: Int): Int

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    Attributes
    protected
    Definition Classes
    EntryIterator → SizeMapUtils
  32. def countElems(from: Int, until: Int): Int

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    Attributes
    protected
    Definition Classes
    EntryIterator → SizeMapUtils
  33. def drop(n: Int): Iterator[T]

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    Advances this iterator past the first n elements, or the length of the iterator, whichever is smaller.

    Advances this iterator past the first n elements, or the length of the iterator, whichever is smaller.

    n

    the number of elements to drop

    returns

    an iterator which produces all values of the current iterator, except it omits the first n values.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  34. def drop2combiner[U >: T, This](n: Int, cb: Combiner[U, This]): Combiner[U, This]

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    Definition Classes
    AugmentedIterableIterator
  35. def dropWhile(p: (T) ⇒ Boolean): Iterator[T]

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    Skips longest sequence of elements of this iterator which satisfy given predicate p, and returns an iterator of the remaining elements.

    Skips longest sequence of elements of this iterator which satisfy given predicate p, and returns an iterator of the remaining elements.

    p

    the predicate used to skip elements.

    returns

    an iterator consisting of the remaining elements

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  36. def dup: IterRepr

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    Creates a copy of this iterator.

    Creates a copy of this iterator.

    Definition Classes
    EntryIteratorIterableSplitter
  37. def duplicate: (Iterator[T], Iterator[T])

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    Creates two new iterators that both iterate over the same elements as this iterator (in the same order).

    Creates two new iterators that both iterate over the same elements as this iterator (in the same order). The duplicate iterators are considered equal if they are positioned at the same element.

    Given that most methods on iterators will make the original iterator unfit for further use, this methods provides a reliable way of calling multiple such methods on an iterator.

    returns

    a pair of iterators

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.

    ,

    The implementation may allocate temporary storage for elements iterated by one iterator but not yet by the other.

  38. def ensuring(cond: (EntryIterator[T, IterRepr]) ⇒ Boolean, msg: ⇒ Any): EntryIterator[T, IterRepr]

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    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to Ensuring[EntryIterator[T, IterRepr]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  39. def ensuring(cond: (EntryIterator[T, IterRepr]) ⇒ Boolean): EntryIterator[T, IterRepr]

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    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to Ensuring[EntryIterator[T, IterRepr]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  40. def ensuring(cond: Boolean, msg: ⇒ Any): EntryIterator[T, IterRepr]

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    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to Ensuring[EntryIterator[T, IterRepr]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  41. def ensuring(cond: Boolean): EntryIterator[T, IterRepr]

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    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to Ensuring[EntryIterator[T, IterRepr]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  42. final def eq(arg0: AnyRef): Boolean

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    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
  43. def equals(arg0: Any): Boolean

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    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
  44. def exists(p: (T) ⇒ Boolean): Boolean

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    Tests whether a predicate holds for some of the values produced by this iterator.

    Tests whether a predicate holds for some of the values produced by this iterator.

    Note: may not terminate for infinite iterators.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p holds for some of the values produced by this iterator, otherwise false.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
    Note

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

  45. def filter(p: (T) ⇒ Boolean): Iterator[T]

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    Returns an iterator over all the elements of this iterator that satisfy the predicate p.

    Returns an iterator over all the elements of this iterator that satisfy the predicate p. The order of the elements is preserved.

    p

    the predicate used to test values.

    returns

    an iterator which produces those values of this iterator which satisfy the predicate p.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  46. def filter2combiner[U >: T, This](pred: (T) ⇒ Boolean, cb: Combiner[U, This]): Combiner[U, This]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  47. def filterNot(p: (T) ⇒ Boolean): Iterator[T]

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    Creates an iterator over all the elements of this iterator which do not satisfy a predicate p.

    Creates an iterator over all the elements of this iterator which do not satisfy a predicate p.

    p

    the predicate used to test values.

    returns

    an iterator which produces those values of this iterator which do not satisfy the predicate p.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  48. def filterNot2combiner[U >: T, This](pred: (T) ⇒ Boolean, cb: Combiner[U, This]): Combiner[U, This]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  49. def finalize(): Unit

    Permalink

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

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

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

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

    not specified by SLS as a member of AnyRef

  50. def find(p: (T) ⇒ Boolean): Option[T]

    Permalink

    Finds the first value produced by the iterator satisfying a predicate, if any.

    Finds the first value produced by the iterator satisfying a predicate, if any.

    Note: may not terminate for infinite iterators.

    p

    the predicate used to test values.

    returns

    an option value containing the first value produced by the iterator that satisfies predicate p, or None if none exists.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
    Note

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

  51. def flatMap[B](f: (T) ⇒ GenTraversableOnce[B]): Iterator[B]

    Permalink

    Creates a new iterator by applying a function to all values produced by this iterator and concatenating the results.

    Creates a new iterator by applying a function to all values produced by this iterator and concatenating the results.

    f

    the function to apply on each element.

    returns

    the iterator resulting from applying the given iterator-valued function f to each value produced by this iterator and concatenating the results.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  52. def flatmap2combiner[S, That](f: (T) ⇒ GenTraversableOnce[S], cb: Combiner[S, That]): Combiner[S, That]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  53. def fold[U >: T](z: U)(op: (U, U) ⇒ U): U

    Permalink

    Folds the elements of this traversable or iterator using the specified associative binary operator.

    Folds the elements of this traversable or iterator using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    Note: will not terminate for infinite iterators.

    z

    a neutral element for the fold operation; may be added to the result an arbitrary number of times, and must not change the result (e.g., Nil for list concatenation, 0 for addition, or 1 for multiplication).

    op

    a binary operator that must be associative.

    returns

    the result of applying the fold operator op between all the elements and z, or z if this traversable or iterator is empty.

    Definition Classes
    AugmentedIterableIterator → TraversableOnceGenTraversableOnce
  54. def foldLeft[B](z: B)(op: (B, T) ⇒ B): B

    Permalink

    Applies a binary operator to a start value and all elements of this traversable or iterator, going left to right.

    Applies a binary operator to a start value and all elements of this traversable or iterator, going left to right.

    Note: will not terminate for infinite-sized collections.

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

    B

    the result type of the binary operator.

    z

    the start value.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this traversable or iterator, going left to right with the start value z on the left:

    op(...op(z, x_1), x_2, ..., x_n)

    where x1, ..., xn are the elements of this traversable or iterator. Returns z if this traversable or iterator is empty.

    Definition Classes
    TraversableOnceGenTraversableOnce
  55. def foldRight[B](z: B)(op: (T, B) ⇒ B): B

    Permalink

    Applies a binary operator to all elements of this traversable or iterator and a start value, going right to left.

    Applies a binary operator to all elements of this traversable or iterator and a start value, going right to left.

    Note: will not terminate for infinite-sized collections.

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

    B

    the result type of the binary operator.

    z

    the start value.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this traversable or iterator, going right to left with the start value z on the right:

    op(x_1, op(x_2, ... op(x_n, z)...))

    where x1, ..., xn are the elements of this traversable or iterator. Returns z if this traversable or iterator is empty.

    Definition Classes
    TraversableOnceGenTraversableOnce
  56. def forall(p: (T) ⇒ Boolean): Boolean

    Permalink

    Tests whether a predicate holds for all values produced by this iterator.

    Tests whether a predicate holds for all values produced by this iterator.

    Note: may not terminate for infinite iterators.

    p

    the predicate used to test elements.

    returns

    true if the given predicate p holds for all values produced by this iterator, otherwise false.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
    Note

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

  57. def foreach(f: (T) ⇒ Unit): Unit

    Permalink

    [use case] Applies a function f to all values produced by this iterator.

    [use case]

    Applies a function f to all values produced by this iterator.

    f

    the function that is applied for its side-effect to every element. The result of function f is discarded.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
    Full Signature

    def foreach[U](f: (T) ⇒ U): Unit

  58. def formatted(fmtstr: String): String

    Permalink

    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 information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to StringFormat[EntryIterator[T, IterRepr]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @inline()
  59. final def getClass(): Class[_]

    Permalink

    A representation that corresponds to the dynamic class of the receiver object.

    A representation that corresponds to the dynamic class of the receiver object.

    The nature of the representation is platform dependent.

    returns

    a representation that corresponds to the dynamic class of the receiver object.

    Definition Classes
    AnyRef → Any
    Note

    not specified by SLS as a member of AnyRef

  60. def grouped[B >: T](size: Int): GroupedIterator[B]

    Permalink

    Returns an iterator which groups this iterator into fixed size blocks.

    Returns an iterator which groups this iterator into fixed size blocks. Example usages:

    // Returns List(List(1, 2, 3), List(4, 5, 6), List(7)))
    (1 to 7).iterator grouped 3 toList
    // Returns List(List(1, 2, 3), List(4, 5, 6))
    (1 to 7).iterator grouped 3 withPartial false toList
    // Returns List(List(1, 2, 3), List(4, 5, 6), List(7, 20, 25)
    // Illustrating that withPadding's argument is by-name.
    val it2 = Iterator.iterate(20)(_ + 5)
    (1 to 7).iterator grouped 3 withPadding it2.next toList
    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  61. def hasDefiniteSize: Boolean

    Permalink

    Tests whether this Iterator has a known size.

    Tests whether this Iterator has a known size.

    returns

    true for empty Iterators, false otherwise.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
    Note

    Reuse: The iterator remains valid for further use whatever result is returned.

  62. def hasNext: Boolean

    Permalink

    Tests whether this iterator can provide another element.

    Tests whether this iterator can provide another element.

    returns

    true if a subsequent call to next will yield an element, false otherwise.

    Definition Classes
    EntryIteratorIterator
    Note

    Reuse: The iterator remains valid for further use whatever result is returned.

  63. def hashCode(): Int

    Permalink

    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
  64. def indexFlag: Int

    Permalink

    Returns the value of the index flag.

    Returns the value of the index flag.

    The index flag holds an integer which carries some operation-specific meaning. For instance, takeWhile operation sets the index flag to the position of the element where the predicate fails. Other workers may check this index against the indices they are working on and return if this index is smaller than their index. Examples of operations using this are takeWhile, dropWhile, span and indexOf.

    returns

    the value of the index flag

    Definition Classes
    DelegatedSignallingSignalling
  65. def indexOf[B >: T](elem: B): Int

    Permalink

    Returns the index of the first occurrence of the specified object in this iterable object.

    Returns the index of the first occurrence of the specified object in this iterable object.

    Note: may not terminate for infinite iterators.

    elem

    element to search for.

    returns

    the index of the first occurrence of elem in the values produced by this iterator, or -1 if such an element does not exist until the end of the iterator is reached.

    Definition Classes
    Iterator
    Note

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

  66. def indexWhere(p: (T) ⇒ Boolean): Int

    Permalink

    Returns the index of the first produced value satisfying a predicate, or -1.

    Returns the index of the first produced value satisfying a predicate, or -1.

    Note: may not terminate for infinite iterators.

    p

    the predicate to test values

    returns

    the index of the first produced value satisfying p, or -1 if such an element does not exist until the end of the iterator is reached.

    Definition Classes
    Iterator
    Note

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

  67. def isAborted: Boolean

    Permalink

    Checks whether an abort signal has been issued.

    Checks whether an abort signal has been issued.

    Abort flag being true means that a worker can abort and produce whatever result, since its result will not affect the final result of computation. An example of operations using this are find, forall and exists methods.

    returns

    the state of the abort

    Definition Classes
    DelegatedSignallingSignalling
  68. def isEmpty: Boolean

    Permalink

    Tests whether this iterator is empty.

    Tests whether this iterator is empty.

    returns

    true if hasNext is false, false otherwise.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
    Note

    Reuse: The iterator remains valid for further use whatever result is returned.

  69. final def isInstanceOf[T0]: Boolean

    Permalink

    Test whether the dynamic type of the receiver object is T0.

    Test whether the dynamic type of the receiver object is T0.

    Note that the result of the test is modulo Scala's erasure semantics. Therefore the expression 1.isInstanceOf[String] will return false, while the expression List(1).isInstanceOf[List[String]] will return true. In the latter example, because the type argument is erased as part of compilation it is not possible to check whether the contents of the list are of the specified type.

    returns

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

    Definition Classes
    Any
  70. def isRemainingCheap: Boolean

    Permalink

    For most collections, this is a cheap operation.

    For most collections, this is a cheap operation. Exceptions can override this method.

    Definition Classes
    RemainsIterator
  71. def isTraversableAgain: Boolean

    Permalink

    Tests whether this Iterator can be repeatedly traversed.

    Tests whether this Iterator can be repeatedly traversed.

    returns

    false

    Definition Classes
    IteratorGenTraversableOnce
    Note

    Reuse: The iterator remains valid for further use whatever result is returned.

  72. def length: Int

    Permalink

    Returns the number of elements in this iterator.

    Returns the number of elements in this iterator.

    Note: will not terminate for infinite iterators.

    Definition Classes
    Iterator
    Note

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

  73. def map[S](f: (T) ⇒ S): Mapped[S]

    Permalink

    Creates a new iterator that maps all produced values of this iterator to new values using a transformation function.

    Creates a new iterator that maps all produced values of this iterator to new values using a transformation function.

    f

    the transformation function

    returns

    a new iterator which transforms every value produced by this iterator by applying the function f to it.

    Definition Classes
    IterableSplitterIterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  74. def map2combiner[S, That](f: (T) ⇒ S, cb: Combiner[S, That]): Combiner[S, That]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  75. def max: A

    Permalink

    [use case] Finds the largest element.

    [use case]

    Finds the largest element.

    returns

    the largest element of this traversable or iterator.

    Definition Classes
    AugmentedIterableIterator → TraversableOnceGenTraversableOnce
    Full Signature

    def max[U >: T](implicit ord: Ordering[U]): T

  76. def maxBy[B](f: (A) ⇒ B): A

    Permalink

    [use case] Finds the first element which yields the largest value measured by function f.

    [use case]

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

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    the first element of this traversable or iterator with the largest value measured by function f.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def maxBy[B](f: (T) ⇒ B)(implicit cmp: Ordering[B]): T

  77. def min: A

    Permalink

    [use case] Finds the smallest element.

    [use case]

    Finds the smallest element.

    returns

    the smallest element of this traversable or iterator

    Definition Classes
    AugmentedIterableIterator → TraversableOnceGenTraversableOnce
    Full Signature

    def min[U >: T](implicit ord: Ordering[U]): T

  78. def minBy[B](f: (A) ⇒ B): A

    Permalink

    [use case] Finds the first element which yields the smallest value measured by function f.

    [use case]

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

    B

    The result type of the function f.

    f

    The measuring function.

    returns

    the first element of this traversable or iterator with the smallest value measured by function f.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def minBy[B](f: (T) ⇒ B)(implicit cmp: Ordering[B]): T

  79. def mkString: String

    Permalink

    Displays all elements of this traversable or iterator in a string.

    Displays all elements of this traversable or iterator in a string.

    returns

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

    Definition Classes
    TraversableOnceGenTraversableOnce
  80. def mkString(sep: String): String

    Permalink

    Displays all elements of this traversable or iterator in a string using a separator string.

    Displays all elements of this traversable or iterator in a string using a separator string.

    sep

    the separator string.

    returns

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

    Definition Classes
    TraversableOnceGenTraversableOnce
    Example:
    1. List(1, 2, 3).mkString("|") = "1|2|3"

  81. def mkString(start: String, sep: String, end: String): String

    Permalink

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

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

    start

    the starting string.

    sep

    the separator string.

    end

    the ending string.

    returns

    a string representation of this traversable or iterator. 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 traversable or iterator are separated by the string sep.

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

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

    Permalink

    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
  83. def next(): T

    Permalink

    Produces the next element of this iterator.

    Produces the next element of this iterator.

    returns

    the next element of this iterator, if hasNext is true, undefined behavior otherwise.

    Definition Classes
    EntryIteratorIterator
    Note

    Reuse: The iterator remains valid for further use whatever result is returned.

  84. def nonEmpty: Boolean

    Permalink

    Tests whether the traversable or iterator is not empty.

    Tests whether the traversable or iterator is not empty.

    returns

    true if the traversable or iterator contains at least one element, false otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  85. final def notify(): Unit

    Permalink

    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
    Note

    not specified by SLS as a member of AnyRef

  86. final def notifyAll(): Unit

    Permalink

    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
    Note

    not specified by SLS as a member of AnyRef

  87. def padTo(len: Int, elem: T): Iterator[T]

    Permalink

    [use case] Appends an element value to this iterator until a given target length is reached.

    [use case]

    Appends an element value to this iterator until a given target length is reached.

    len

    the target length

    elem

    the padding value

    returns

    a new iterator consisting of producing all values of this iterator, followed by the minimal number of occurrences of elem so that the number of produced values is at least len.

    Definition Classes
    Iterator
    Full Signature

    def padTo[A1 >: T](len: Int, elem: A1): Iterator[A1]

  88. def partition(p: (T) ⇒ Boolean): (Iterator[T], Iterator[T])

    Permalink

    Partitions this iterator in two iterators according to a predicate.

    Partitions this iterator in two iterators according to a predicate.

    p

    the predicate on which to partition

    returns

    a pair of iterators: the iterator that satisfies the predicate p and the iterator that does not. The relative order of the elements in the resulting iterators is the same as in the original iterator.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.

  89. def partition2combiners[U >: T, This](pred: (T) ⇒ Boolean, btrue: Combiner[U, This], bfalse: Combiner[U, This]): (Combiner[U, This], Combiner[U, This])

    Permalink
    Definition Classes
    AugmentedIterableIterator
  90. def patch[B >: T](from: Int, patchElems: Iterator[B], replaced: Int): Iterator[B]

    Permalink

    Returns this iterator with patched values.

    Returns this iterator with patched values. Patching at negative indices is the same as patching starting at 0. Patching at indices at or larger than the length of the original iterator appends the patch to the end. If more values are replaced than actually exist, the excess is ignored.

    from

    The start index from which to patch

    patchElems

    The iterator of patch values

    replaced

    The number of values in the original iterator that are replaced by the patch.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, as well as the one passed as a parameter, and use only the iterator that was returned. Using the old iterators is undefined, subject to change, and may result in changes to the new iterator as well.

  91. def product: A

    Permalink

    [use case] Multiplies up the elements of this collection.

    [use case]

    Multiplies up the elements of this collection.

    returns

    the product of all elements in this traversable or iterator of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the traversable or iterator and as result type of product. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    AugmentedIterableIterator → TraversableOnceGenTraversableOnce
    Full Signature

    def product[U >: T](implicit num: Numeric[U]): U

  92. def reduce[U >: T](op: (U, U) ⇒ U): U

    Permalink

    Reduces the elements of this traversable or iterator using the specified associative binary operator.

    Reduces the elements of this traversable or iterator using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    op

    A binary operator that must be associative.

    returns

    The result of applying reduce operator op between all the elements if the traversable or iterator is nonempty.

    Definition Classes
    AugmentedIterableIterator → TraversableOnceGenTraversableOnce
    Exceptions thrown

    UnsupportedOperationException if this traversable or iterator is empty.

  93. def reduceLeft[U >: T](howmany: Int, op: (U, U) ⇒ U): U

    Permalink
    Definition Classes
    AugmentedIterableIterator
  94. def reduceLeft[B >: T](op: (B, T) ⇒ B): B

    Permalink

    Applies a binary operator to all elements of this traversable or iterator, going left to right.

    Applies a binary operator to all elements of this traversable or iterator, going left to right.

    Note: will not terminate for infinite-sized collections.

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

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this traversable or iterator, going left to right:

    op( op( ... op(x_1, x_2) ..., x_{n-1}), x_n)

    where x1, ..., xn are the elements of this traversable or iterator.

    Definition Classes
    TraversableOnce
    Exceptions thrown

    UnsupportedOperationException if this traversable or iterator is empty.

  95. def reduceLeftOption[B >: T](op: (B, T) ⇒ B): Option[B]

    Permalink

    Optionally applies a binary operator to all elements of this traversable or iterator, going left to right.

    Optionally applies a binary operator to all elements of this traversable or iterator, going left to right.

    Note: will not terminate for infinite-sized collections.

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

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    an option value containing the result of reduceLeft(op) if this traversable or iterator is nonempty, None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  96. def reduceOption[A1 >: T](op: (A1, A1) ⇒ A1): Option[A1]

    Permalink

    Reduces the elements of this traversable or iterator, if any, using the specified associative binary operator.

    Reduces the elements of this traversable or iterator, if any, using the specified associative binary operator.

    The order in which operations are performed on elements is unspecified and may be nondeterministic.

    A1

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

    op

    A binary operator that must be associative.

    returns

    An option value containing result of applying reduce operator op between all the elements if the collection is nonempty, and None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  97. def reduceRight[B >: T](op: (T, B) ⇒ B): B

    Permalink

    Applies a binary operator to all elements of this traversable or iterator, going right to left.

    Applies a binary operator to all elements of this traversable or iterator, going right to left.

    Note: will not terminate for infinite-sized collections.

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

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    the result of inserting op between consecutive elements of this traversable or iterator, going right to left:

    op(x_1, op(x_2, ..., op(x_{n-1}, x_n)...))

    where x1, ..., xn are the elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Exceptions thrown

    UnsupportedOperationException if this traversable or iterator is empty.

  98. def reduceRightOption[B >: T](op: (T, B) ⇒ B): Option[B]

    Permalink

    Optionally applies a binary operator to all elements of this traversable or iterator, going right to left.

    Optionally applies a binary operator to all elements of this traversable or iterator, going right to left.

    Note: will not terminate for infinite-sized collections.

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

    B

    the result type of the binary operator.

    op

    the binary operator.

    returns

    an option value containing the result of reduceRight(op) if this traversable or iterator is nonempty, None otherwise.

    Definition Classes
    TraversableOnceGenTraversableOnce
  99. def remaining: Int

    Permalink

    The number of elements this iterator has yet to traverse.

    The number of elements this iterator has yet to traverse. This method doesn't change the state of the iterator.

    This method is used to provide size hints to builders and combiners, and to approximate positions of iterators within a data structure.

    Note: This method may be implemented to return an upper bound on the number of elements in the iterator, instead of the exact number of elements to iterate. Parallel collections which have such iterators are called non-strict-splitter collections.

    In that case, 2 considerations must be taken into account:

    1) classes that inherit ParIterable must reimplement methods take, drop, slice, splitAt, copyToArray and all others using this information.

    2) if an iterator provides an upper bound on the number of elements, then after splitting the sum of remaining values of split iterators must be less than or equal to this upper bound.

    Definition Classes
    EntryIteratorIterableSplitter → RemainsIterator
  100. def reversed: List[T]

    Permalink
    Attributes
    protected[this]
    Definition Classes
    TraversableOnce
  101. def sameElements(that: Iterator[_]): Boolean

    Permalink

    Tests if another iterator produces the same values as this one.

    Tests if another iterator produces the same values as this one.

    Note: will not terminate for infinite iterators.

    that

    the other iterator

    returns

    true, if both iterators produce the same elements in the same order, false otherwise.

    Definition Classes
    Iterator
    Note

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

  102. def scan(): Unit

    Permalink
  103. def scanLeft[B](z: B)(op: (B, T) ⇒ B): Iterator[B]

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

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

    Note: will not terminate for infinite iterators.

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

    B

    the type of the elements in the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    returns

    iterator with intermediate results

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  104. def scanRight[B](z: B)(op: (T, B) ⇒ B): Iterator[B]

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    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 iterators.

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

    B

    the type of the elements in the resulting collection

    z

    the initial value

    op

    the binary operator applied to the intermediate result and the element

    returns

    iterator with intermediate results

    Definition Classes
    Iterator
    Example:
    1. Iterator(1, 2, 3, 4).scanRight(0)(_ + _).toList == List(10, 9, 7, 4, 0)
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  105. def scanToArray[U >: T, A >: U](z: U, op: (U, U) ⇒ U, array: Array[A], from: Int): Unit

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    Definition Classes
    AugmentedIterableIterator
  106. def scanToCombiner[U >: T, That](howmany: Int, startValue: U, op: (U, U) ⇒ U, cb: Combiner[U, That]): Combiner[U, That]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  107. def scanToCombiner[U >: T, That](startValue: U, op: (U, U) ⇒ U, cb: Combiner[U, That]): Combiner[U, That]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  108. def seq: Iterator[T]

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    A version of this collection with all of the operations implemented sequentially (i.e., in a single-threaded manner).

    A version of this collection with all of the operations implemented sequentially (i.e., in a single-threaded manner).

    This method returns a reference to this collection. In parallel collections, it is redefined to return a sequential implementation of this collection. In both cases, it has O(1) complexity.

    returns

    a sequential view of the collection.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
  109. def setIndexFlag(f: Int): Unit

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    Sets the value of the index flag.

    Sets the value of the index flag.

    The index flag holds an integer which carries some operation-specific meaning. For instance, takeWhile operation sets the index flag to the position of the element where the predicate fails. Other workers may check this index against the indices they are working on and return if this index is smaller than their index. Examples of operations using this are takeWhile, dropWhile, span and indexOf.

    f

    the value to which the index flag is set.

    Definition Classes
    DelegatedSignallingSignalling
  110. def setIndexFlagIfGreater(f: Int): Unit

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    Sets the value of the index flag if argument is greater than current value.

    Sets the value of the index flag if argument is greater than current value. This method does this atomically.

    The index flag holds an integer which carries some operation-specific meaning. For instance, takeWhile operation sets the index flag to the position of the element where the predicate fails. Other workers may check this index against the indices they are working on and return if this index is smaller than their index. Examples of operations using this are takeWhile, dropWhile, span and indexOf.

    f

    the value to which the index flag is set

    Definition Classes
    DelegatedSignallingSignalling
  111. def setIndexFlagIfLesser(f: Int): Unit

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    Sets the value of the index flag if argument is lesser than current value.

    Sets the value of the index flag if argument is lesser than current value. This method does this atomically.

    The index flag holds an integer which carries some operation-specific meaning. For instance, takeWhile operation sets the index flag to the position of the element where the predicate fails. Other workers may check this index against the indices they are working on and return if this index is smaller than their index. Examples of operations using this are takeWhile, dropWhile, span and indexOf.

    f

    the value to which the index flag is set

    Definition Classes
    DelegatedSignallingSignalling
  112. def shouldSplitFurther[S](coll: parallel.ParIterable[S], parallelismLevel: Int): Boolean

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    Definition Classes
    IterableSplitter
  113. var signalDelegate: Signalling

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    A delegate that method calls are redirected to.

    A delegate that method calls are redirected to.

    Definition Classes
    IterableSplitterDelegatedSignalling
  114. def size: Int

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    The size of this traversable or iterator.

    The size of this traversable or iterator.

    Note: will not terminate for infinite-sized collections.

    returns

    the number of elements in this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  115. def slice(from1: Int, until1: Int): IterableSplitter[T]

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    Creates an iterator returning an interval of the values produced by this iterator.

    Creates an iterator returning an interval of the values produced by this iterator.

    returns

    an iterator which advances this iterator past the first from elements using drop, and then takes until - from elements, using take.

    Definition Classes
    IterableSplitterIterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  116. def slice2combiner[U >: T, This](from: Int, until: Int, cb: Combiner[U, This]): Combiner[U, This]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  117. def sliding[B >: T](size: Int, step: Int = 1): GroupedIterator[B]

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    Returns an iterator which presents a "sliding window" view of another iterator.

    Returns an iterator which presents a "sliding window" view of another iterator. The first argument is the window size, and the second is how far to advance the window on each iteration; defaults to 1. Example usages:

    // Returns List(List(1, 2, 3), List(2, 3, 4), List(3, 4, 5))
    (1 to 5).iterator.sliding(3).toList
    // Returns List(List(1, 2, 3, 4), List(4, 5))
    (1 to 5).iterator.sliding(4, 3).toList
    // Returns List(List(1, 2, 3, 4))
    (1 to 5).iterator.sliding(4, 3).withPartial(false).toList
    // Returns List(List(1, 2, 3, 4), List(4, 5, 20, 25))
    // Illustrating that withPadding's argument is by-name.
    val it2 = Iterator.iterate(20)(_ + 5)
    (1 to 5).iterator.sliding(4, 3).withPadding(it2.next).toList
    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  118. def span(p: (T) ⇒ Boolean): (Iterator[T], Iterator[T])

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

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

    p

    the test predicate

    returns

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

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterators that were returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterators as well.

  119. def span2combiners[U >: T, This](p: (T) ⇒ Boolean, before: Combiner[U, This], after: Combiner[U, This]): (Combiner[U, This], Combiner[U, This])

    Permalink
    Definition Classes
    AugmentedIterableIterator
  120. def split: Seq[IterableSplitter[T]]

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    Splits the iterator into a sequence of disjunct views.

    Splits the iterator into a sequence of disjunct views.

    Returns a sequence of split iterators, each iterating over some subset of the elements in the collection. These subsets are disjoint and should be approximately equal in size. These subsets are not empty, unless the iterator is empty in which case this method returns a sequence with a single empty iterator. If the splitter has more than two elements, this method will return two or more splitters.

    Implementors are advised to keep this partition relatively small - two splitters are already enough when partitioning the collection, although there may be a few more.

    Note: this method actually invalidates the current splitter.

    returns

    a sequence of disjunct iterators of the collection

    Definition Classes
    EntryIteratorIterableSplitterSplitter
  121. def splitAt2combiners[U >: T, This](at: Int, before: Combiner[U, This], after: Combiner[U, This]): (Combiner[U, This], Combiner[U, This])

    Permalink
    Definition Classes
    AugmentedIterableIterator
  122. def splitWithSignalling: scala.Seq[IterableSplitter[T]]

    Permalink
    Definition Classes
    IterableSplitter
  123. def sum: A

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    [use case] Sums up the elements of this collection.

    [use case]

    Sums up the elements of this collection.

    returns

    the sum of all elements in this traversable or iterator of numbers of type Int. Instead of Int, any other type T with an implicit Numeric[T] implementation can be used as element type of the traversable or iterator and as result type of sum. Examples of such types are: Long, Float, Double, BigInt.

    Definition Classes
    AugmentedIterableIterator → TraversableOnceGenTraversableOnce
    Full Signature

    def sum[U >: T](implicit num: Numeric[U]): U

  124. final def synchronized[T0](arg0: ⇒ T0): T0

    Permalink
    Definition Classes
    AnyRef
  125. def tag: Int

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    A read only tag specific to the signalling object.

    A read only tag specific to the signalling object. It is used to give specific workers information on the part of the collection being operated on.

    Definition Classes
    DelegatedSignallingSignalling
  126. def take(n: Int): IterableSplitter[T]

    Permalink

    Selects first n values of this iterator.

    Selects first n values of this iterator.

    n

    the number of values to take

    returns

    an iterator producing only of the first n values of this iterator, or else the whole iterator, if it produces fewer than n values.

    Definition Classes
    IterableSplitterIterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  127. def take2combiner[U >: T, This](n: Int, cb: Combiner[U, This]): Combiner[U, This]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  128. def takeWhile(p: (T) ⇒ Boolean): Iterator[T]

    Permalink

    Takes longest prefix of values produced by this iterator that satisfy a predicate.

    Takes longest prefix of values produced by this iterator that satisfy a predicate.

    p

    The predicate used to test elements.

    returns

    An iterator returning the values produced by this iterator, until this iterator produces a value that does not satisfy the predicate p.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  129. def takeWhile2combiner[U >: T, This](p: (T) ⇒ Boolean, cb: Combiner[U, This]): (Combiner[U, This], Boolean)

    Permalink
    Definition Classes
    AugmentedIterableIterator
  130. def to[Col[_]]: Col[A]

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    [use case] Converts this traversable or iterator into another by copying all elements.

    [use case]

    Converts this traversable or iterator into another by copying all elements.

    Note: will not terminate for infinite iterators.

    Col

    The collection type to build.

    returns

    a new collection containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, T, Col[T]]): Col[T]

  131. def toArray: Array[A]

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    [use case] Converts this traversable or iterator to an array.

    [use case]

    Converts this traversable or iterator to an array.

    Note: will not terminate for infinite iterators.

    returns

    an array containing all elements of this traversable or iterator. An ClassTag must be available for the element type of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toArray[B >: T](implicit arg0: ClassTag[B]): Array[B]

  132. def toBuffer[B >: T]: Buffer[B]

    Permalink

    Uses the contents of this traversable or iterator to create a new mutable buffer.

    Uses the contents of this traversable or iterator to create a new mutable buffer.

    Note: will not terminate for infinite-sized collections.

    returns

    a buffer containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  133. def toIndexedSeq: immutable.IndexedSeq[T]

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    Converts this traversable or iterator to an indexed sequence.

    Converts this traversable or iterator to an indexed sequence.

    Note: will not terminate for infinite-sized collections.

    returns

    an indexed sequence containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  134. def toIterable: Iterable[T]

    Permalink

    Converts this traversable or iterator to an iterable collection.

    Converts this traversable or iterator to an iterable collection. Note that the choice of target Iterable is lazy in this default implementation as this TraversableOnce may be lazy and unevaluated (i.e. it may be an iterator which is only traversable once).

    Note: will not terminate for infinite-sized collections.

    returns

    an Iterable containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  135. def toIterator: Iterator[T]

    Permalink

    Returns an Iterator over the elements in this traversable or iterator.

    Returns an Iterator over the elements in this traversable or iterator. Will return the same Iterator if this instance is already an Iterator.

    Note: will not terminate for infinite iterators.

    returns

    an Iterator containing all elements of this traversable or iterator.

    Definition Classes
    IteratorGenTraversableOnce
  136. def toList: List[T]

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    Converts this traversable or iterator to a list.

    Converts this traversable or iterator to a list.

    Note: will not terminate for infinite-sized collections.

    returns

    a list containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  137. def toMap[T, U]: Map[T, U]

    Permalink

    [use case] Converts this traversable or iterator to a map.

    [use case]

    Converts this traversable or iterator to a map. This method is unavailable unless the elements are members of Tuple2, each ((T, U)) becoming a key-value pair in the map. Duplicate keys will be overwritten by later keys: if this is an unordered collection, which key is in the resulting map is undefined.

    Note: will not terminate for infinite iterators.

    returns

    a map of type immutable.Map[T, U] containing all key/value pairs of type (T, U) of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
    Full Signature

    def toMap[T, U](implicit ev: <:<[T, (T, U)]): immutable.Map[T, U]

  138. def toParArray: ParArray[T]

    Permalink
    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to CollectionsHaveToParArray[EntryIterator[T, IterRepr], T] performed by method CollectionsHaveToParArray in scala.collection.parallel. This conversion will take place only if an implicit value of type (EntryIterator[T, IterRepr]) ⇒ GenTraversableOnce[T] is in scope.
    Definition Classes
    CollectionsHaveToParArray
  139. def toSeq: Seq[T]

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    Converts this traversable or iterator to a sequence.

    Converts this traversable or iterator to a sequence. As with toIterable, it's lazy in this default implementation, as this TraversableOnce may be lazy and unevaluated.

    Note: will not terminate for infinite-sized collections.

    returns

    a sequence containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  140. def toSet[B >: T]: immutable.Set[B]

    Permalink

    Converts this traversable or iterator to a set.

    Converts this traversable or iterator to a set.

    Note: will not terminate for infinite-sized collections.

    returns

    a set containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  141. def toStream: immutable.Stream[T]

    Permalink

    Converts this traversable or iterator to a stream.

    Converts this traversable or iterator to a stream.

    returns

    a stream containing all elements of this traversable or iterator.

    Definition Classes
    IteratorGenTraversableOnce
  142. def toString(): String

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    Converts this iterator to a string.

    Converts this iterator to a string.

    returns

    "empty iterator" or "non-empty iterator", depending on whether or not the iterator is empty.

    Definition Classes
    Iterator → AnyRef → Any
    Note

    Reuse: The iterator remains valid for further use whatever result is returned.

  143. def toTraversable: Traversable[T]

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    Converts this traversable or iterator to an unspecified Traversable.

    Converts this traversable or iterator to an unspecified Traversable. Will return the same collection if this instance is already Traversable.

    Note: will not terminate for infinite iterators.

    returns

    a Traversable containing all elements of this traversable or iterator.

    Definition Classes
    IteratorTraversableOnceGenTraversableOnce
  144. def toVector: Vector[T]

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    Converts this traversable or iterator to a Vector.

    Converts this traversable or iterator to a Vector.

    Note: will not terminate for infinite-sized collections.

    returns

    a vector containing all elements of this traversable or iterator.

    Definition Classes
    TraversableOnceGenTraversableOnce
  145. final def wait(): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  146. final def wait(arg0: Long, arg1: Int): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  147. final def wait(arg0: Long): Unit

    Permalink
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  148. def withFilter(p: (T) ⇒ Boolean): Iterator[T]

    Permalink

    Creates an iterator over all the elements of this iterator that satisfy the predicate p.

    Creates an iterator over all the elements of this iterator that satisfy the predicate p. The order of the elements is preserved.

    Note: withFilter is the same as filter on iterators. It exists so that for-expressions with filters work over iterators.

    p

    the predicate used to test values.

    returns

    an iterator which produces those values of this iterator which satisfy the predicate p.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  149. def zip[B](that: Iterator[B]): Iterator[(T, B)]

    Permalink

    Creates an iterator formed from this iterator and another iterator by combining corresponding values in pairs.

    Creates an iterator formed from this iterator and another iterator by combining corresponding values in pairs. If one of the two iterators is longer than the other, its remaining elements are ignored.

    that

    The iterator providing the second half of each result pair

    returns

    a new iterator containing pairs consisting of corresponding elements of this iterator and that. The number of elements returned by the new iterator is the minimum of the number of elements returned by this iterator and that.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, as well as the one passed as a parameter, and use only the iterator that was returned. Using the old iterators is undefined, subject to change, and may result in changes to the new iterator as well.

  150. def zip2combiner[U >: T, S, That](otherpit: RemainsIterator[S], cb: Combiner[(U, S), That]): Combiner[(U, S), That]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  151. def zipAll[B](that: Iterator[B], thisElem: T, thatElem: B): Iterator[(T, B)]

    Permalink

    [use case] Creates an iterator formed from this iterator and another iterator by combining corresponding elements in pairs.

    [use case]

    Creates an iterator formed from this iterator and another iterator by combining corresponding elements in pairs. If one of the two iterators is shorter than the other, placeholder elements are used to extend the shorter iterator to the length of the longer.

    that

    iterator that may have a different length as the self iterator.

    thisElem

    element thisElem is used to fill up the resulting iterator if the self iterator is shorter than that

    thatElem

    element thatElem is used to fill up the resulting iterator if that is shorter than the self iterator

    returns

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

    Definition Classes
    Iterator
    Full Signature

    def zipAll[B, A1 >: T, B1 >: B](that: Iterator[B], thisElem: A1, thatElem: B1): Iterator[(A1, B1)]

  152. def zipAll2combiner[U >: T, S, That](that: RemainsIterator[S], thiselem: U, thatelem: S, cb: Combiner[(U, S), That]): Combiner[(U, S), That]

    Permalink
    Definition Classes
    AugmentedIterableIterator
  153. def zipAllParSeq[S, U >: T, R >: S](that: SeqSplitter[S], thisElem: U, thatElem: R): ZippedAll[U, R]

    Permalink
    Definition Classes
    IterableSplitter
  154. def zipParSeq[S](that: SeqSplitter[S]): Zipped[S]

    Permalink
    Definition Classes
    IterableSplitter
  155. def zipWithIndex: Iterator[(T, Int)]

    Permalink

    Creates an iterator that pairs each element produced by this iterator with its index, counting from 0.

    Creates an iterator that pairs each element produced by this iterator with its index, counting from 0.

    returns

    a new iterator containing pairs consisting of corresponding elements of this iterator and their indices.

    Definition Classes
    Iterator
    Note

    Reuse: After calling this method, one should discard the iterator it was called on, and use only the iterator that was returned. Using the old iterator is undefined, subject to change, and may result in changes to the new iterator as well.

  156. def [B](y: B): (EntryIterator[T, IterRepr], B)

    Permalink
    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to ArrowAssoc[EntryIterator[T, IterRepr]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc

Shadowed Implicit Value Members

  1. def filter(p: (T) ⇒ Boolean): TraversableOnce[T]

    Permalink
    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    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:
    (entryIterator: MonadOps[T]).filter(p)
    Definition Classes
    MonadOps
  2. def flatMap[B](f: (T) ⇒ GenTraversableOnce[B]): TraversableOnce[B]

    Permalink
    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    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:
    (entryIterator: MonadOps[T]).flatMap(f)
    Definition Classes
    MonadOps
  3. def map[B](f: (T) ⇒ B): TraversableOnce[B]

    Permalink
    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    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:
    (entryIterator: MonadOps[T]).map(f)
    Definition Classes
    MonadOps
  4. def withFilter(p: (T) ⇒ Boolean): Iterator[T]

    Permalink
    Implicit information
    This member is added by an implicit conversion from EntryIterator[T, IterRepr] to MonadOps[T] performed by method MonadOps in scala.collection.TraversableOnce.
    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:
    (entryIterator: MonadOps[T]).withFilter(p)
    Definition Classes
    MonadOps