t

scala.collection.parallel

PreciseSplitter

trait PreciseSplitter[+T] extends Splitter[T]

A precise splitter (or a precise split iterator) can be split into arbitrary number of splitters that traverse disjoint subsets of arbitrary sizes.

Implementors might want to override the parameterless split method for efficiency.

T

type of the elements this splitter traverses

Linear Supertypes
Splitter[T], Iterator[T], IterableOnceOps[T, Iterator, Iterator[T]], IterableOnce[T], AnyRef, Any
Known Subclasses
Elements, SeqSplitter, Patched, RemainsIteratorAppended, RemainsIteratorMapped, RemainsIteratorTaken, RemainsIteratorZipped, RemainsIteratorZippedAll, ParRangeIterator, ParVectorIterator, ParArrayIterator
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Inherited
  1. PreciseSplitter
  2. Splitter
  3. Iterator
  4. IterableOnceOps
  5. IterableOnce
  6. AnyRef
  7. Any
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Visibility
  1. Public
  2. Protected

Type Members

  1. class GroupedIterator[B >: A] extends AbstractIterator[immutable.Seq[B]]
    Definition Classes
    Iterator

Abstract Value Members

  1. abstract def hasNext: Boolean
    Definition Classes
    Iterator
  2. abstract def next(): T
    Definition Classes
    Iterator
    Annotations
    @throws(scala.this.throws.<init>$default$1[NoSuchElementException])
  3. abstract def psplit(sizes: Int*): Seq[PreciseSplitter[T]]

    Splits the splitter into disjunct views.

    Splits the splitter into disjunct views.

    This overloaded version of the split method is specific to precise splitters. It returns a sequence of splitters, each iterating some subset of the elements in this splitter. The sizes of the subsplitters in the partition is equal to the size in the corresponding argument, as long as there are enough elements in this splitter to split it that way.

    If there aren't enough elements, a zero element splitter is appended for each additional argument. If there are additional elements, an additional splitter is appended at the end to compensate.

    For example, say we have a splitter ps with 100 elements. Invoking:

    ps.split(50, 25, 25, 10, 5)

    will return a sequence of five splitters, last two views being empty. On the other hand, calling:

    ps.split(50, 40)

    will return a sequence of three splitters, last of them containing ten elements.

    Note: this method actually invalidates the current splitter.

    Unlike the case with split found in splitters, views returned by this method can be empty.

    sizes

    the sizes used to split this split iterator into iterators that traverse disjunct subsets

    returns

    a sequence of disjunct subsequence iterators of this parallel iterator

  4. abstract def split: Seq[PreciseSplitter[T]]

    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
    PreciseSplitter → Splitter

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. final def ++[B >: T](xs: => IterableOnce[B]): Iterator[B]
    Definition Classes
    Iterator
    Annotations
    @inline()
  4. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  5. final def addString(b: mutable.StringBuilder): mutable.StringBuilder
    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  6. final def addString(b: mutable.StringBuilder, sep: String): mutable.StringBuilder
    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  7. def addString(b: mutable.StringBuilder, start: String, sep: String, end: String): mutable.StringBuilder
    Definition Classes
    IterableOnceOps
  8. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  9. def buffered: BufferedIterator[T]
    Definition Classes
    Iterator
  10. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  11. def collect[B](pf: PartialFunction[T, B]): Iterator[B]
    Definition Classes
    Iterator → IterableOnceOps
  12. def collectFirst[B](pf: PartialFunction[T, B]): Option[B]
    Definition Classes
    IterableOnceOps
  13. def concat[B >: T](xs: => IterableOnce[B]): Iterator[B]
    Definition Classes
    Iterator
  14. def contains(elem: Any): Boolean
    Definition Classes
    Iterator
  15. def copyToArray[B >: T](xs: Array[B], start: Int, len: Int): Int
    Definition Classes
    IterableOnceOps
  16. def copyToArray[B >: T](xs: Array[B], start: Int): Int
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding("This should always forward to the 3-arg version of this method", "2.13.4")
  17. def copyToArray[B >: T](xs: Array[B]): Int
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding("This should always forward to the 3-arg version of this method", "2.13.4")
  18. def corresponds[B](that: IterableOnce[B])(p: (T, B) => Boolean): Boolean
    Definition Classes
    IterableOnceOps
  19. def count(p: (T) => Boolean): Int
    Definition Classes
    IterableOnceOps
  20. def distinct: Iterator[T]
    Definition Classes
    Iterator
  21. def distinctBy[B](f: (T) => B): Iterator[T]
    Definition Classes
    Iterator
  22. def drop(n: Int): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  23. def dropWhile(p: (T) => Boolean): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  24. def duplicate: (Iterator[T], Iterator[T])
    Definition Classes
    Iterator
  25. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  26. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  27. def exists(p: (T) => Boolean): Boolean
    Definition Classes
    IterableOnceOps
  28. def filter(p: (T) => Boolean): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  29. def filterNot(p: (T) => Boolean): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  30. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  31. def find(p: (T) => Boolean): Option[T]
    Definition Classes
    IterableOnceOps
  32. def flatMap[B](f: (T) => IterableOnce[B]): Iterator[B]
    Definition Classes
    Iterator → IterableOnceOps
  33. def flatten[B](implicit ev: (T) => IterableOnce[B]): Iterator[B]
    Definition Classes
    Iterator → IterableOnceOps
  34. def fold[A1 >: T](z: A1)(op: (A1, A1) => A1): A1
    Definition Classes
    IterableOnceOps
  35. def foldLeft[B](z: B)(op: (B, T) => B): B
    Definition Classes
    IterableOnceOps
  36. def foldRight[B](z: B)(op: (T, B) => B): B
    Definition Classes
    IterableOnceOps
  37. def forall(p: (T) => Boolean): Boolean
    Definition Classes
    IterableOnceOps
  38. def foreach[U](f: (T) => U): Unit
    Definition Classes
    IterableOnceOps
  39. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  40. def grouped[B >: T](size: Int): GroupedIterator[B]
    Definition Classes
    Iterator
  41. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  42. def indexOf[B >: T](elem: B, from: Int): Int
    Definition Classes
    Iterator
  43. def indexOf[B >: T](elem: B): Int
    Definition Classes
    Iterator
  44. def indexWhere(p: (T) => Boolean, from: Int): Int
    Definition Classes
    Iterator
  45. def isEmpty: Boolean
    Definition Classes
    Iterator → IterableOnceOps
    Annotations
    @deprecatedOverriding("isEmpty is defined as !hasNext; override hasNext instead", "2.13.0")
  46. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  47. def isTraversableAgain: Boolean
    Definition Classes
    IterableOnceOps
  48. final def iterator: Iterator[T]
    Definition Classes
    Iterator → IterableOnce
    Annotations
    @inline()
  49. def knownSize: Int
    Definition Classes
    IterableOnce
  50. final def length: Int
    Definition Classes
    Iterator
    Annotations
    @inline()
  51. def map[B](f: (T) => B): Iterator[B]
    Definition Classes
    Iterator → IterableOnceOps
  52. def max[B >: T](implicit ord: math.Ordering[B]): T
    Definition Classes
    IterableOnceOps
  53. def maxBy[B](f: (T) => B)(implicit cmp: math.Ordering[B]): T
    Definition Classes
    IterableOnceOps
  54. def maxByOption[B](f: (T) => B)(implicit cmp: math.Ordering[B]): Option[T]
    Definition Classes
    IterableOnceOps
  55. def maxOption[B >: T](implicit ord: math.Ordering[B]): Option[T]
    Definition Classes
    IterableOnceOps
  56. def min[B >: T](implicit ord: math.Ordering[B]): T
    Definition Classes
    IterableOnceOps
  57. def minBy[B](f: (T) => B)(implicit cmp: math.Ordering[B]): T
    Definition Classes
    IterableOnceOps
  58. def minByOption[B](f: (T) => B)(implicit cmp: math.Ordering[B]): Option[T]
    Definition Classes
    IterableOnceOps
  59. def minOption[B >: T](implicit ord: math.Ordering[B]): Option[T]
    Definition Classes
    IterableOnceOps
  60. final def mkString: String
    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  61. final def mkString(sep: String): String
    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  62. final def mkString(start: String, sep: String, end: String): String
    Definition Classes
    IterableOnceOps
  63. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  64. def nextOption(): Option[T]
    Definition Classes
    Iterator
  65. def nonEmpty: Boolean
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecatedOverriding("nonEmpty is defined as !isEmpty; override isEmpty instead", "2.13.0")
  66. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  67. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  68. def padTo[B >: T](len: Int, elem: B): Iterator[B]
    Definition Classes
    Iterator
  69. def partition(p: (T) => Boolean): (Iterator[T], Iterator[T])
    Definition Classes
    Iterator
  70. def patch[B >: T](from: Int, patchElems: Iterator[B], replaced: Int): Iterator[B]
    Definition Classes
    Iterator
  71. def product[B >: T](implicit num: math.Numeric[B]): B
    Definition Classes
    IterableOnceOps
  72. def reduce[B >: T](op: (B, B) => B): B
    Definition Classes
    IterableOnceOps
  73. def reduceLeft[B >: T](op: (B, T) => B): B
    Definition Classes
    IterableOnceOps
  74. def reduceLeftOption[B >: T](op: (B, T) => B): Option[B]
    Definition Classes
    IterableOnceOps
  75. def reduceOption[B >: T](op: (B, B) => B): Option[B]
    Definition Classes
    IterableOnceOps
  76. def reduceRight[B >: T](op: (T, B) => B): B
    Definition Classes
    IterableOnceOps
  77. def reduceRightOption[B >: T](op: (T, B) => B): Option[B]
    Definition Classes
    IterableOnceOps
  78. def reversed: Iterable[T]
    Attributes
    protected
    Definition Classes
    IterableOnceOps
  79. def sameElements[B >: T](that: IterableOnce[B]): Boolean
    Definition Classes
    Iterator
  80. def scanLeft[B](z: B)(op: (B, T) => B): Iterator[B]
    Definition Classes
    Iterator → IterableOnceOps
  81. def size: Int
    Definition Classes
    IterableOnceOps
  82. def slice(from: Int, until: Int): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  83. def sliceIterator(from: Int, until: Int): Iterator[T]
    Attributes
    protected
    Definition Classes
    Iterator
  84. def sliding[B >: T](size: Int, step: Int): GroupedIterator[B]
    Definition Classes
    Iterator
  85. def span(p: (T) => Boolean): (Iterator[T], Iterator[T])
    Definition Classes
    Iterator → IterableOnceOps
  86. def splitAt(n: Int): (Iterator[T], Iterator[T])
    Definition Classes
    IterableOnceOps
  87. def stepper[S <: Stepper[_]](implicit shape: StepperShape[T, S]): S
    Definition Classes
    IterableOnce
  88. def sum[B >: T](implicit num: math.Numeric[B]): B
    Definition Classes
    IterableOnceOps
  89. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  90. def take(n: Int): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  91. def takeWhile(p: (T) => Boolean): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  92. def tapEach[U](f: (T) => U): Iterator[T]
    Definition Classes
    Iterator → IterableOnceOps
  93. def to[C1](factory: Factory[T, C1]): C1
    Definition Classes
    IterableOnceOps
  94. def toArray[B >: T](implicit arg0: ClassTag[B]): Array[B]
    Definition Classes
    IterableOnceOps
  95. final def toBuffer[B >: T]: Buffer[B]
    Definition Classes
    IterableOnceOps
    Annotations
    @inline()
  96. def toIndexedSeq: immutable.IndexedSeq[T]
    Definition Classes
    IterableOnceOps
  97. def toList: immutable.List[T]
    Definition Classes
    IterableOnceOps
  98. def toMap[K, V](implicit ev: <:<[T, (K, V)]): immutable.Map[K, V]
    Definition Classes
    IterableOnceOps
  99. def toSeq: immutable.Seq[T]
    Definition Classes
    IterableOnceOps
  100. def toSet[B >: T]: immutable.Set[B]
    Definition Classes
    IterableOnceOps
  101. def toString(): String
    Definition Classes
    Iterator → AnyRef → Any
  102. def toVector: immutable.Vector[T]
    Definition Classes
    IterableOnceOps
  103. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  104. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  105. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
  106. def withFilter(p: (T) => Boolean): Iterator[T]
    Definition Classes
    Iterator
  107. def zip[B](that: IterableOnce[B]): Iterator[(T, B)]
    Definition Classes
    Iterator
  108. def zipAll[A1 >: T, B](that: IterableOnce[B], thisElem: A1, thatElem: B): Iterator[(A1, B)]
    Definition Classes
    Iterator
  109. def zipWithIndex: Iterator[(T, Int)]
    Definition Classes
    Iterator → IterableOnceOps

Deprecated Value Members

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

    (Since version 2.13.0) Use foldLeft instead of /:

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

    (Since version 2.13.0) Use foldRight instead of :\

  3. def aggregate[B](z: => B)(seqop: (B, T) => B, combop: (B, B) => B): B
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) aggregate is not relevant for sequential collections. Use foldLeft(z)(seqop) instead.

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

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

  5. final def hasDefiniteSize: Boolean
    Definition Classes
    Iterator → IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) hasDefiniteSize on Iterator is the same as isEmpty

  6. def scanRight[B](z: B)(op: (T, B) => B): Iterator[B]
    Definition Classes
    Iterator
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Call scanRight on an Iterable instead.

  7. def seq: PreciseSplitter.this.type
    Definition Classes
    Iterator
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Iterator.seq always returns the iterator itself

  8. final def toIterator: Iterator[T]
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .iterator instead of .toIterator

  9. final def toStream: immutable.Stream[T]
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.13.0) Use .to(LazyList) instead of .toStream

Inherited from Splitter[T]

Inherited from Iterator[T]

Inherited from IterableOnceOps[T, Iterator, Iterator[T]]

Inherited from IterableOnce[T]

Inherited from AnyRef

Inherited from Any

Ungrouped