c

lightdb.util

GroupedIterator

case class GroupedIterator[T, G](i: Iterator[T], grouper: (T) => G) extends Iterator[(G, List[T])] with Product with Serializable

Convenience Iterator that groups sorted elements together based on the grouper function.

Note: this is only useful is the underlying iterator is properly sorted by G.

Linear Supertypes
Serializable, Product, Equals, Iterator[(G, List[T])], IterableOnceOps[(G, List[T]), Iterator, Iterator[(G, List[T])]], IterableOnce[(G, List[T])], AnyRef, Any
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Inherited
  1. GroupedIterator
  2. Serializable
  3. Product
  4. Equals
  5. Iterator
  6. IterableOnceOps
  7. IterableOnce
  8. AnyRef
  9. Any
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new GroupedIterator(i: Iterator[T], grouper: (T) => G)

Type Members

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

Value Members

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

Deprecated Value Members

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

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

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

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

  5. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable]) @Deprecated
    Deprecated

    (Since version 9)

  6. 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

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

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

  8. def seq: util.GroupedIterator.this.type
    Definition Classes
    Iterator
    Annotations
    @deprecated
    Deprecated

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

  9. final def toIterator: Iterator[(G, List[T])]
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

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

  10. final def toStream: Stream[(G, List[T])]
    Definition Classes
    IterableOnceOps
    Annotations
    @deprecated @inline()
    Deprecated

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

Inherited from Serializable

Inherited from Product

Inherited from Equals

Inherited from Iterator[(G, List[T])]

Inherited from IterableOnceOps[(G, List[T]), Iterator, Iterator[(G, List[T])]]

Inherited from IterableOnce[(G, List[T])]

Inherited from AnyRef

Inherited from Any

Ungrouped