class HashIndex[T] extends MutableIndex[T] with Serializable

Class that builds a 1-to-1 mapping between Ints and T's, which is very useful for efficiency concerns.

Two extra views are provided: the index.synchronized view enables threadsafe access and the index.immutable view keeps prevents the (view) from being updated.

Annotations
@SerialVersionUID()
Linear Supertypes
MutableIndex[T], Index[T], Serializable, Serializable, (T) ⇒ Int, Iterable[T], IterableLike[T, Iterable[T]], Equals, GenIterable[T], GenIterableLike[T, Iterable[T]], Traversable[T], GenTraversable[T], GenericTraversableTemplate[T, Iterable], TraversableLike[T, Iterable[T]], GenTraversableLike[T, Iterable[T]], Parallelizable[T, ParIterable[T]], TraversableOnce[T], GenTraversableOnce[T], FilterMonadic[T, Iterable[T]], HasNewBuilder[T, Iterable[T] @scala.annotation.unchecked.uncheckedVariance], AnyRef, Any
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Inherited
  1. HashIndex
  2. MutableIndex
  3. Index
  4. Serializable
  5. Serializable
  6. Function1
  7. Iterable
  8. IterableLike
  9. Equals
  10. GenIterable
  11. GenIterableLike
  12. Traversable
  13. GenTraversable
  14. GenericTraversableTemplate
  15. TraversableLike
  16. GenTraversableLike
  17. Parallelizable
  18. TraversableOnce
  19. GenTraversableOnce
  20. FilterMonadic
  21. HasNewBuilder
  22. AnyRef
  23. Any
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Visibility
  1. Public
  2. All

Instance Constructors

  1. new HashIndex()

Type Members

  1. type Self = Iterable[T]
    Attributes
    protected[this]
    Definition Classes
    TraversableLike
  2. class WithFilter extends FilterMonadic[A, Repr]
    Definition Classes
    TraversableLike

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
    Definition Classes
    AnyRef → Any
  3. def ++[B >: T, That](that: GenTraversableOnce[B])(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike → GenTraversableLike
  4. def ++:[B >: T, That](that: Traversable[B])(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike
  5. def ++:[B >: T, That](that: TraversableOnce[B])(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike
  6. def /:[B](z: B)(op: (B, T) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  7. def :\[B](z: B)(op: (T, B) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  8. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  9. def addString(b: StringBuilder): StringBuilder
    Definition Classes
    TraversableOnce
  10. def addString(b: StringBuilder, sep: String): StringBuilder
    Definition Classes
    TraversableOnce
  11. def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder
    Definition Classes
    TraversableOnce
  12. def aggregate[B](z: ⇒ B)(seqop: (B, T) ⇒ B, combop: (B, B) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  13. def andThen[A](g: (Int) ⇒ A): (T) ⇒ A
    Definition Classes
    Function1
    Annotations
    @unspecialized()
  14. def apply(t: T): Int

    Returns the int id of the given element (0-based) or -1 if not found in the index.

    Returns the int id of the given element (0-based) or -1 if not found in the index. This method never changes the index (even in MutableIndex).

    Definition Classes
    HashIndex → Index → Function1
  15. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  16. def canEqual(that: Any): Boolean
    Definition Classes
    IterableLike → Equals
  17. def clone(): AnyRef
    Attributes
    protected[java.lang]
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate() @throws( ... )
  18. def collect[B, That](pf: PartialFunction[T, B])(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike → GenTraversableLike
  19. def collectFirst[B](pf: PartialFunction[T, B]): Option[B]
    Definition Classes
    TraversableOnce
  20. def companion: GenericCompanion[Iterable]
    Definition Classes
    Iterable → GenIterable → Traversable → GenTraversable → GenericTraversableTemplate
  21. def compose[A](g: (A) ⇒ T): (A) ⇒ Int
    Definition Classes
    Function1
    Annotations
    @unspecialized()
  22. def contains(t: T): Boolean

    Returns true if this index contains the element t.

    Returns true if this index contains the element t.

    Definition Classes
    HashIndex → Index
  23. def copyToArray[B >: T](xs: Array[B], start: Int, len: Int): Unit
    Definition Classes
    IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce
  24. def copyToArray[B >: T](xs: Array[B]): Unit
    Definition Classes
    TraversableOnce → GenTraversableOnce
  25. def copyToArray[B >: T](xs: Array[B], start: Int): Unit
    Definition Classes
    TraversableOnce → GenTraversableOnce
  26. def copyToBuffer[B >: T](dest: Buffer[B]): Unit
    Definition Classes
    TraversableOnce
  27. def count(p: (T) ⇒ Boolean): Int
    Definition Classes
    TraversableOnce → GenTraversableOnce
  28. lazy val defaultHashCode: Int
    Attributes
    protected
    Definition Classes
    Index
  29. def drop(n: Int): Iterable[T]
    Definition Classes
    IterableLike → TraversableLike → GenTraversableLike
  30. def dropRight(n: Int): Iterable[T]
    Definition Classes
    IterableLike
  31. def dropWhile(p: (T) ⇒ Boolean): Iterable[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  32. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  33. def equals(other: Any): Boolean
    Definition Classes
    Index → Equals → AnyRef → Any
  34. def exists(p: (T) ⇒ Boolean): Boolean
    Definition Classes
    IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce
  35. def filter(p: (T) ⇒ Boolean): Iterable[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  36. def filterNot(p: (T) ⇒ Boolean): Iterable[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  37. def find(p: (T) ⇒ Boolean): Option[T]
    Definition Classes
    IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce
  38. def flatMap[B, That](f: (T) ⇒ GenTraversableOnce[B])(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike → GenTraversableLike → FilterMonadic
  39. def flatten[B](implicit asTraversable: (T) ⇒ GenTraversableOnce[B]): Iterable[B]
    Definition Classes
    GenericTraversableTemplate
  40. def fold[A1 >: T](z: A1)(op: (A1, A1) ⇒ A1): A1
    Definition Classes
    TraversableOnce → GenTraversableOnce
  41. def foldLeft[B](z: B)(op: (B, T) ⇒ B): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  42. def foldRight[B](z: B)(op: (T, B) ⇒ B): B
    Definition Classes
    IterableLike → TraversableOnce → GenTraversableOnce
  43. def forall(p: (T) ⇒ Boolean): Boolean
    Definition Classes
    IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce
  44. def foreach[U](f: (T) ⇒ U): Unit
    Definition Classes
    IterableLike → TraversableLike → GenTraversableLike → TraversableOnce → GenTraversableOnce → FilterMonadic
  45. def genericBuilder[B]: Builder[B, Iterable[B]]
    Definition Classes
    GenericTraversableTemplate
  46. def get(pos: Int): T

    Returns an object at the given position or throws IndexOutOfBoundsException if it's not found.

    Returns an object at the given position or throws IndexOutOfBoundsException if it's not found.

    Definition Classes
    HashIndex → Index
  47. final def getClass(): Class[_]
    Definition Classes
    AnyRef → Any
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  48. def groupBy[K](f: (T) ⇒ K): Map[K, Iterable[T]]
    Definition Classes
    TraversableLike → GenTraversableLike
  49. def grouped(size: Int): Iterator[Iterable[T]]
    Definition Classes
    IterableLike
  50. def hasDefiniteSize: Boolean
    Definition Classes
    TraversableLike → TraversableOnce → GenTraversableOnce
  51. def hashCode(): Int
    Definition Classes
    Index → AnyRef → Any
  52. def head: T
    Definition Classes
    IterableLike → TraversableLike → GenTraversableLike
  53. def headOption: Option[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  54. def index(t: T): Int

    Returns the position of T, adding it to the index if it's not there.

    Returns the position of T, adding it to the index if it's not there.

    Definition Classes
    HashIndex → MutableIndex
  55. def indexOf(t: T): Int

    Override Iterable's linear-scan indexOf to use our apply method.

    Override Iterable's linear-scan indexOf to use our apply method.

    Definition Classes
    Index
  56. def indexOpt(t: T): Option[Int]

    Returns Some(i) if the object has been indexed, or None.

    Returns Some(i) if the object has been indexed, or None.

    Definition Classes
    HashIndex → Index
  57. def init: Iterable[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  58. def inits: Iterator[Iterable[T]]
    Definition Classes
    TraversableLike
  59. def isEmpty: Boolean
    Definition Classes
    IterableLike → TraversableLike → TraversableOnce → GenTraversableOnce
  60. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  61. final def isTraversableAgain: Boolean
    Definition Classes
    TraversableLike → GenTraversableLike → GenTraversableOnce
  62. def iterator: Iterator[T]
    Definition Classes
    HashIndex → IterableLike → GenIterableLike
  63. def last: T
    Definition Classes
    TraversableLike → GenTraversableLike
  64. def lastOption: Option[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  65. def map[B, That](f: (T) ⇒ B)(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike → GenTraversableLike → FilterMonadic
  66. def max[B >: T](implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  67. def maxBy[B](f: (T) ⇒ B)(implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  68. def min[B >: T](implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  69. def minBy[B](f: (T) ⇒ B)(implicit cmp: Ordering[B]): T
    Definition Classes
    TraversableOnce → GenTraversableOnce
  70. def mkString: String
    Definition Classes
    TraversableOnce → GenTraversableOnce
  71. def mkString(sep: String): String
    Definition Classes
    TraversableOnce → GenTraversableOnce
  72. def mkString(start: String, sep: String, end: String): String
    Definition Classes
    TraversableOnce → GenTraversableOnce
  73. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  74. def newBuilder: Builder[T, Iterable[T]]
    Attributes
    protected[this]
    Definition Classes
    GenericTraversableTemplate → HasNewBuilder
  75. def nonEmpty: Boolean
    Definition Classes
    TraversableOnce → GenTraversableOnce
  76. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  77. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @HotSpotIntrinsicCandidate()
  78. def pairs: Iterator[(T, Int)]

    Returns the indexed items along with their indicies

    Returns the indexed items along with their indicies

    Definition Classes
    HashIndex → Index
  79. def par: ParIterable[T]
    Definition Classes
    Parallelizable
  80. def parCombiner: Combiner[T, ParIterable[T]]
    Attributes
    protected[this]
    Definition Classes
    TraversableLike → Parallelizable
  81. def partition(p: (T) ⇒ Boolean): (Iterable[T], Iterable[T])
    Definition Classes
    TraversableLike → GenTraversableLike
  82. def product[B >: T](implicit num: Numeric[B]): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  83. def reduce[A1 >: T](op: (A1, A1) ⇒ A1): A1
    Definition Classes
    TraversableOnce → GenTraversableOnce
  84. def reduceLeft[B >: T](op: (B, T) ⇒ B): B
    Definition Classes
    TraversableOnce
  85. def reduceLeftOption[B >: T](op: (B, T) ⇒ B): Option[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  86. def reduceOption[A1 >: T](op: (A1, A1) ⇒ A1): Option[A1]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  87. def reduceRight[B >: T](op: (T, B) ⇒ B): B
    Definition Classes
    IterableLike → TraversableOnce → GenTraversableOnce
  88. def reduceRightOption[B >: T](op: (T, B) ⇒ B): Option[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  89. def repr: Iterable[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  90. def reversed: List[T]
    Attributes
    protected[this]
    Definition Classes
    TraversableOnce
  91. def sameElements[B >: T](that: GenIterable[B]): Boolean
    Definition Classes
    IterableLike → GenIterableLike
  92. def scan[B >: T, That](z: B)(op: (B, B) ⇒ B)(implicit cbf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike → GenTraversableLike
  93. def scanLeft[B, That](z: B)(op: (B, T) ⇒ B)(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike → GenTraversableLike
  94. def scanRight[B, That](z: B)(op: (T, B) ⇒ B)(implicit bf: CanBuildFrom[Iterable[T], B, That]): That
    Definition Classes
    TraversableLike → GenTraversableLike
    Annotations
    @migration
    Migration

    (Changed in version 2.9.0) The behavior of scanRight has changed. The previous behavior can be reproduced with scanRight.reverse.

  95. def seq: Iterable[T]
    Definition Classes
    Iterable → GenIterable → Traversable → GenTraversable → Parallelizable → TraversableOnce → GenTraversableOnce
  96. def size: Int

    Number of elements in this index.

    Number of elements in this index.

    Definition Classes
    HashIndex → Index → GenTraversableLike → TraversableOnce → GenTraversableOnce
  97. def sizeHintIfCheap: Int
    Attributes
    protected[scala.collection]
    Definition Classes
    GenTraversableOnce
  98. def slice(from: Int, until: Int): Iterable[T]
    Definition Classes
    IterableLike → TraversableLike → GenTraversableLike
  99. def sliding(size: Int, step: Int): Iterator[Iterable[T]]
    Definition Classes
    IterableLike
  100. def sliding(size: Int): Iterator[Iterable[T]]
    Definition Classes
    IterableLike
  101. def span(p: (T) ⇒ Boolean): (Iterable[T], Iterable[T])
    Definition Classes
    TraversableLike → GenTraversableLike
  102. def splitAt(n: Int): (Iterable[T], Iterable[T])
    Definition Classes
    TraversableLike → GenTraversableLike
  103. def stringPrefix: String
    Definition Classes
    TraversableLike → GenTraversableLike
  104. def sum[B >: T](implicit num: Numeric[B]): B
    Definition Classes
    TraversableOnce → GenTraversableOnce
  105. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  106. def tail: Iterable[T]
    Definition Classes
    TraversableLike → GenTraversableLike
  107. def tails: Iterator[Iterable[T]]
    Definition Classes
    TraversableLike
  108. def take(n: Int): Iterable[T]
    Definition Classes
    IterableLike → TraversableLike → GenTraversableLike
  109. def takeRight(n: Int): Iterable[T]
    Definition Classes
    IterableLike
  110. def takeWhile(p: (T) ⇒ Boolean): Iterable[T]
    Definition Classes
    IterableLike → TraversableLike → GenTraversableLike
  111. def thisCollection: Iterable[T]
    Attributes
    protected[this]
    Definition Classes
    IterableLike → TraversableLike
  112. def to[Col[_]](implicit cbf: CanBuildFrom[Nothing, T, Col[T]]): Col[T]
    Definition Classes
    TraversableLike → TraversableOnce → GenTraversableOnce
  113. def toArray[B >: T](implicit arg0: ClassTag[B]): Array[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  114. def toBuffer[B >: T]: Buffer[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  115. def toCollection(repr: Iterable[T]): Iterable[T]
    Attributes
    protected[this]
    Definition Classes
    IterableLike → TraversableLike
  116. def toIndexedSeq: IndexedSeq[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  117. def toIterable: Iterable[T]
    Definition Classes
    IterableLike → TraversableOnce → GenTraversableOnce
  118. def toIterator: Iterator[T]
    Definition Classes
    IterableLike → TraversableLike → GenTraversableOnce
    Annotations
    @deprecatedOverriding( ... , "2.11.0" )
  119. def toList: List[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  120. def toMap[T, U](implicit ev: <:<[T, (T, U)]): Map[T, U]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  121. def toSeq: Seq[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  122. def toSet[B >: T]: Set[B]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  123. def toStream: Stream[T]
    Definition Classes
    IterableLike → TraversableLike → GenTraversableOnce
  124. def toString(): String
    Definition Classes
    Index → Function1 → TraversableLike → AnyRef → Any
  125. def toTraversable: Traversable[T]
    Definition Classes
    TraversableLike → TraversableOnce → GenTraversableOnce
    Annotations
    @deprecatedOverriding( ... , "2.11.0" )
  126. def toVector: Vector[T]
    Definition Classes
    TraversableOnce → GenTraversableOnce
  127. def transpose[B](implicit asTraversable: (T) ⇒ GenTraversableOnce[B]): Iterable[Iterable[B]]
    Definition Classes
    GenericTraversableTemplate
    Annotations
    @migration
    Migration

    (Changed in version 2.9.0) transpose throws an IllegalArgumentException if collections are not uniformly sized.

  128. def unapply(pos: Int): Option[T]

    Returns Some(t) if this int corresponds to some object, and None otherwise.

    Returns Some(t) if this int corresponds to some object, and None otherwise.

    Definition Classes
    HashIndex → Index
  129. def unzip[A1, A2](implicit asPair: (T) ⇒ (A1, A2)): (Iterable[A1], Iterable[A2])
    Definition Classes
    GenericTraversableTemplate
  130. def unzip3[A1, A2, A3](implicit asTriple: (T) ⇒ (A1, A2, A3)): (Iterable[A1], Iterable[A2], Iterable[A3])
    Definition Classes
    GenericTraversableTemplate
  131. def view(from: Int, until: Int): IterableView[T, Iterable[T]]
    Definition Classes
    IterableLike → TraversableLike
  132. def view: IterableView[T, Iterable[T]]
    Definition Classes
    IterableLike → TraversableLike
  133. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  134. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @native() @throws( ... )
  135. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws( ... )
  136. def withFilter(p: (T) ⇒ Boolean): FilterMonadic[T, Iterable[T]]
    Definition Classes
    TraversableLike → FilterMonadic
  137. def zip[A1 >: T, B, That](that: GenIterable[B])(implicit bf: CanBuildFrom[Iterable[T], (A1, B), That]): That
    Definition Classes
    IterableLike → GenIterableLike
  138. def zipAll[B, A1 >: T, That](that: GenIterable[B], thisElem: A1, thatElem: B)(implicit bf: CanBuildFrom[Iterable[T], (A1, B), That]): That
    Definition Classes
    IterableLike → GenIterableLike
  139. def zipWithIndex[A1 >: T, That](implicit bf: CanBuildFrom[Iterable[T], (A1, Int), That]): That
    Definition Classes
    IterableLike → GenIterableLike
  140. def |[U](right: Index[U]): EitherIndex[T, U]
    Definition Classes
    Index

Deprecated Value Members

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

    (Since version ) see corresponding Javadoc for more information.

Inherited from MutableIndex[T]

Inherited from Index[T]

Inherited from Serializable

Inherited from Serializable

Inherited from (T) ⇒ Int

Inherited from Iterable[T]

Inherited from IterableLike[T, Iterable[T]]

Inherited from Equals

Inherited from GenIterable[T]

Inherited from GenIterableLike[T, Iterable[T]]

Inherited from Traversable[T]

Inherited from GenTraversable[T]

Inherited from GenericTraversableTemplate[T, Iterable]

Inherited from TraversableLike[T, Iterable[T]]

Inherited from GenTraversableLike[T, Iterable[T]]

Inherited from Parallelizable[T, ParIterable[T]]

Inherited from TraversableOnce[T]

Inherited from GenTraversableOnce[T]

Inherited from FilterMonadic[T, Iterable[T]]

Inherited from HasNewBuilder[T, Iterable[T] @scala.annotation.unchecked.uncheckedVariance]

Inherited from AnyRef

Inherited from Any

Ungrouped