scala.collection.immutable

Attributes

Source: List.scala
Supertypes: trait Product

class List[A]

trait DefaultSerializable

trait Serializable

trait StrictOptimizedSeqOps[A, List, List[A]]

trait StrictOptimizedLinearSeqOps[A, List, List[A]]

trait StrictOptimizedSeqOps[A, List, List[A]]

trait StrictOptimizedIterableOps[A, List, List[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, List, List[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, List, List[A]]

class AbstractSeq[A]

trait Seq[A]

trait SeqOps[A, List, List[A]]

trait Iterable[A]

class AbstractSeq[A]

trait Seq[A]

trait Equals

trait SeqOps[A, List, List[A]]

trait PartialFunction[Int, A]

trait Int => A

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, List]

trait IterableOps[A, List, List[A]]

trait IterableOnceOps[A, List, List[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
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Explicit instantiation of the Map trait to reduce class file size in subclasses.

Attributes

Source: Map.scala
Supertypes: trait Map[K, V]

trait MapOps[K, V, Map, Map[K, V]]

trait Iterable[(K, V)]

class AbstractMap[K, V]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, Map, Iterable]

trait MapOps[K, V, Map, Map[K, V]]

trait PartialFunction[K, V]

trait K => V

class AbstractIterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, Map[K, V]]

trait IterableOnceOps[(K, V), Iterable, Map[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
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Known subtypes: class HashMap[K, V]

class IntMap[T]

class ListMap[K, V]

class LongMap[T]

class Map1[K, V]

class Map2[K, V]

class Map3[K, V]

class Map4[K, V]

class WithDefault[K, V]

class WithDefault[K, V]

class TreeMap[K, V]

class TreeSeqMap[K, V]

class VectorMap[K, V]
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Explicit instantiation of the Seq trait to reduce class file size in subclasses.

Attributes

Source: Seq.scala
Supertypes: trait Seq[A]

trait SeqOps[A, Seq, Seq[A]]

trait Iterable[A]

class AbstractSeq[A]

trait Seq[A]

trait Equals

trait SeqOps[A, Seq, Seq[A]]

trait PartialFunction[Int, A]

trait Int => A

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Seq]

trait IterableOps[A, Seq, Seq[A]]

trait IterableOnceOps[A, Seq, Seq[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
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Known subtypes: class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

class LazyList[A]

class List[A]

class ::[A]

object Nil.type

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Queue[A]

class Range

class Exclusive

class Inclusive

class Stream[A]

class Cons[A]

object Empty.type

class Vector[A]

class WrappedString
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Explicit instantiation of the Set trait to reduce class file size in subclasses.

Attributes

Source: Set.scala
Supertypes: trait Set[A]

trait SetOps[A, Set, Set[A]]

trait Iterable[A]

class AbstractSet[A]

trait Set[A]

trait Equals

trait SetOps[A, Set, Set[A]]

trait A => Boolean

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Set]

trait IterableOps[A, Set, Set[A]]

trait IterableOnceOps[A, Set, Set[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
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Known subtypes: class ImmutableKeySet

class BitSet

class BitSet1

class BitSet2

class BitSetN

class HashSet[A]

class ListSet[A]

class Set1[A]

class Set2[A]

class Set3[A]

class Set4[A]

class ImmutableKeySortedSet

class TreeSet[A]

class ValueSet
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An immutable array.

Supports efficient indexed access and has a small memory footprint.

Attributes

Companion: object
Source: ArraySeq.scala
Supertypes: trait Serializable

trait EvidenceIterableFactoryDefaults[A, ArraySeq, ClassTag]

trait StrictOptimizedSeqOps[A, ArraySeq, ArraySeq[A]]

trait StrictOptimizedSeqOps[A, ArraySeq, ArraySeq[A]]

trait StrictOptimizedIterableOps[A, ArraySeq, ArraySeq[A]]

trait IndexedSeq[A]

trait IndexedSeqOps[A, ArraySeq, ArraySeq[A]]

trait IndexedSeq[A]

trait IndexedSeqOps[A, ArraySeq, ArraySeq[A]]

class AbstractSeq[A]

trait Seq[A]

trait SeqOps[A, ArraySeq, ArraySeq[A]]

trait Iterable[A]

class AbstractSeq[A]

trait Seq[A]

trait Equals

trait SeqOps[A, ArraySeq, ArraySeq[A]]

trait PartialFunction[Int, A]

trait Int => A

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, IndexedSeq]

trait IterableOps[A, ArraySeq, ArraySeq[A]]

trait IterableOnceOps[A, ArraySeq, ArraySeq[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
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Known subtypes: class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit
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This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: ArraySeq.scala
Supertypes: trait StrictOptimizedClassTagSeqFactory[ArraySeq]

trait ClassTagSeqFactory[ArraySeq]

trait ClassTagIterableFactory[ArraySeq]

trait EvidenceIterableFactory[ArraySeq, ClassTag]

trait Serializable

class Object

trait Matchable

class Any
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Self type: ArraySeq.type

A class for immutable bitsets.

Bitsets are sets of non-negative integers which are represented as variable-size arrays of bits packed into 64-bit words. The lower bound of memory footprint of a bitset is determined by the largest number stored in it.

Attributes

See also: "Scala's Collection Library overview" section on Immutable BitSets for more information.
Companion: object
Source: BitSet.scala
Supertypes: trait Serializable

trait BitSet

trait BitSetOps[BitSet]

trait StrictOptimizedSortedSetOps[Int, SortedSet, BitSet]

trait StrictOptimizedSetOps[Int, Set, BitSet]

trait StrictOptimizedSortedSetOps[Int, SortedSet, BitSet]

trait StrictOptimizedSetOps[Int, Set, BitSet]

trait StrictOptimizedIterableOps[Int, Set, BitSet]

trait SortedSet[Int]

trait SortedSetOps[Int, SortedSet, BitSet]

trait SortedSet[Int]

trait SortedSetFactoryDefaults[Int, SortedSet, Set]

trait SortedSetOps[Int, SortedSet, BitSet]

trait SortedOps[Int, BitSet]

class AbstractSet[Int]

trait Set[Int]

trait SetOps[Int, Set, BitSet]

trait Iterable[Int]

class AbstractSet[Int]

trait Set[Int]

trait Equals

trait SetOps[Int, Set, BitSet]

trait Int => Boolean

class AbstractIterable[Int]

trait Iterable[Int]

trait IterableFactoryDefaults[Int, Set]

trait IterableOps[Int, Set, BitSet]

trait IterableOnceOps[Int, Set, BitSet]

trait IterableOnce[Int]

class Object

trait Matchable

class Any
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Known subtypes: class BitSet1

class BitSet2

class BitSetN

This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: BitSet.scala
Supertypes: trait SpecificIterableFactory[Int, BitSet]

trait Factory[Int, BitSet]

class Object

trait Matchable

class Any
Self type: BitSet.type

This class implements immutable maps using a Compressed Hash-Array Mapped Prefix-tree.

This class implements immutable maps using a Compressed Hash-Array Mapped Prefix-tree. See paper https://michael.steindorfer.name/publications/oopsla15.pdf for more details.

Type parameters

K: the type of the keys contained in this hash set.
V: the type of the values associated with the keys in this hash map.

Attributes

Companion: object
Source: HashMap.scala
Supertypes: trait DefaultSerializable

trait Serializable

trait StrictOptimizedMapOps[K, V, HashMap, HashMap[K, V]]

trait StrictOptimizedMapOps[K, V, HashMap, HashMap[K, V]]

trait StrictOptimizedIterableOps[(K, V), Iterable, HashMap[K, V]]

class AbstractMap[K, V]

trait Map[K, V]

trait MapOps[K, V, HashMap, HashMap[K, V]]

trait Iterable[(K, V)]

class AbstractMap[K, V]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, HashMap, Iterable]

trait MapOps[K, V, HashMap, HashMap[K, V]]

trait PartialFunction[K, V]

trait K => V

class AbstractIterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, HashMap[K, V]]

trait IterableOnceOps[(K, V), Iterable, HashMap[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
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This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: HashMap.scala
Supertypes: trait MapFactory[HashMap]

trait Serializable

class Object

trait Matchable

class Any
Self type: HashMap.type

This class implements immutable sets using a Compressed Hash-Array Mapped Prefix-tree.

This class implements immutable sets using a Compressed Hash-Array Mapped Prefix-tree. See paper https://michael.steindorfer.name/publications/oopsla15.pdf for more details.

Type parameters

A: the type of the elements contained in this hash set.

Attributes

Companion: object
Source: HashSet.scala
Supertypes: trait DefaultSerializable

trait Serializable

trait StrictOptimizedSetOps[A, HashSet, HashSet[A]]

trait StrictOptimizedSetOps[A, HashSet, HashSet[A]]

trait StrictOptimizedIterableOps[A, HashSet, HashSet[A]]

class AbstractSet[A]

trait Set[A]

trait SetOps[A, HashSet, HashSet[A]]

trait Iterable[A]

class AbstractSet[A]

trait Set[A]

trait Equals

trait SetOps[A, HashSet, HashSet[A]]

trait A => Boolean

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, HashSet]

trait IterableOps[A, HashSet, HashSet[A]]

trait IterableOnceOps[A, HashSet, HashSet[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
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This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: HashSet.scala
Supertypes: trait IterableFactory[HashSet]

trait Serializable

class Object

trait Matchable

class Any
Self type: HashSet.type

Base trait for immutable indexed sequences that have efficient apply and length

Attributes

Companion: object
Source: Seq.scala
Supertypes: trait IndexedSeqOps[A, IndexedSeq, IndexedSeq[A]]

trait IndexedSeq[A]

trait IndexedSeqOps[A, IndexedSeq, IndexedSeq[A]]

trait Seq[A]

trait SeqOps[A, IndexedSeq, IndexedSeq[A]]

trait Seq[A]

trait Equals

trait SeqOps[A, IndexedSeq, IndexedSeq[A]]

trait PartialFunction[Int, A]

trait Int => A

trait Iterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, IndexedSeq]

trait IterableOps[A, IndexedSeq, IndexedSeq[A]]

trait IterableOnceOps[A, IndexedSeq, IndexedSeq[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Range

class Exclusive

class Inclusive

class Vector[A]

class WrappedString
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Attributes

Companion: trait
Source: Seq.scala
Supertypes: class Delegate[IndexedSeq]

trait SeqFactory[IndexedSeq]

trait IterableFactory[IndexedSeq]

trait Serializable

class Object

trait Matchable

class Any
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Self type: IndexedSeq.type

Attributes

Source: Seq.scala
Supertypes: class Object

trait Matchable

class Any
Self type: IndexedSeqDefaults.type

Base trait for immutable indexed Seq operations

Attributes

Source: Seq.scala
Supertypes: trait IndexedSeqOps[A, CC, C]

trait SeqOps[A, CC, C]

trait SeqOps[A, CC, C]

trait IterableOps[A, CC, C]

trait IterableOnceOps[A, CC, C]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

trait IndexedSeq[A]

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Range

class Exclusive

class Inclusive

class Vector[A]

class WrappedString
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A companion object for integer maps.

Attributes

Companion: class
Source: IntMap.scala
Supertypes: trait Sum

trait Mirror

class Object

trait Matchable

class Any
Self type: IntMap.type

Specialised immutable map structure for integer keys, based on Fast Mergeable Integer Maps by Okasaki and Gill.

Specialised immutable map structure for integer keys, based on Fast Mergeable Integer Maps by Okasaki and Gill. Essentially a trie based on binary digits of the integers.

Note: This class is as of 2.8 largely superseded by HashMap.

Type parameters

T: type of the values associated with integer keys.

Attributes

Companion: object
Source: IntMap.scala
Supertypes: trait Serializable

trait StrictOptimizedMapOps[Int, T, Map, IntMap[T]]

trait StrictOptimizedMapOps[Int, T, Map, IntMap[T]]

trait StrictOptimizedIterableOps[(Int, T), Iterable, IntMap[T]]

class AbstractMap[Int, T]

trait Map[Int, T]

trait MapOps[Int, T, Map, IntMap[T]]

trait Iterable[(Int, T)]

class AbstractMap[Int, T]

trait Map[Int, T]

trait Equals

trait MapFactoryDefaults[Int, T, Map, Iterable]

trait MapOps[Int, T, Map, IntMap[T]]

trait PartialFunction[Int, T]

trait Int => T

class AbstractIterable[(Int, T)]

trait Iterable[(Int, T)]

trait IterableFactoryDefaults[(Int, T), Iterable]

trait IterableOps[(Int, T), Iterable, IntMap[T]]

trait IterableOnceOps[(Int, T), Iterable, IntMap[T]]

trait IterableOnce[(Int, T)]

class Object

trait Matchable

class Any
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A trait for collections that are guaranteed immutable.

Type parameters

A: the element type of the collection

Attributes

Companion: object
Source: Iterable.scala
Supertypes: trait Iterable[A]

trait IterableFactoryDefaults[A, Iterable]

trait IterableOps[A, Iterable, Iterable[A]]

trait IterableOnceOps[A, Iterable, Iterable[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: trait Map[K, V]

class AbstractMap[K, V]

class HashMap[K, V]

class IntMap[T]

class ListMap[K, V]

class LongMap[T]

class Map1[K, V]

class Map2[K, V]

class Map3[K, V]

class Map4[K, V]

class WithDefault[K, V]

class WithDefault[K, V]

class TreeMap[K, V]

class TreeSeqMap[K, V]

class VectorMap[K, V]

trait SeqMap[K, V]

trait SortedMap[K, V]

trait Seq[A]

class AbstractSeq[A]

class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

class LazyList[A]

class List[A]

class ::[A]

object Nil.type

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Queue[A]

class Range

class Exclusive

class Inclusive

class Stream[A]

class Cons[A]

object Empty.type

class Vector[A]

class WrappedString

trait IndexedSeq[A]

trait LinearSeq[A]

trait Set[A]

class AbstractSet[A]

class ImmutableKeySet

class BitSet

class BitSet1

class BitSet2

class BitSetN

class HashSet[A]

class ListSet[A]

class Set1[A]

class Set2[A]

class Set3[A]

class Set4[A]

class ImmutableKeySortedSet

class TreeSet[A]

class ValueSet

trait SortedSet[A]
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Attributes

Companion: trait
Source: Iterable.scala
Supertypes: class Delegate[Iterable]

trait IterableFactory[Iterable]

trait Serializable

class Object

trait Matchable

class Any
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Self type: Iterable.type

This class implements an immutable linked list.

This class implements an immutable linked list. We call it "lazy" because it computes its elements only when they are needed.

Elements are memoized; that is, the value of each element is computed at most once.

Elements are computed in-order and are never skipped. In other words, accessing the tail causes the head to be computed first.

How lazy is a LazyList? When you have a value of type LazyList, you don't know yet whether the list is empty or not. If you learn that it is non-empty, then you also know that the head has been computed. But the tail is itself a LazyList, whose emptiness-or-not might remain undetermined.

A LazyList may be infinite. For example, LazyList.from(0) contains all of the natural numbers 0, 1, 2, and so on. For infinite sequences, some methods (such as count, sum, max or min) will not terminate.

Here is an example:

import scala.math.BigInt
object Main extends App {
  val fibs: LazyList[BigInt] =
    BigInt(0) #:: BigInt(1) #:: fibs.zip(fibs.tail).map{ n => n._1 + n._2 }
  fibs.take(5).foreach(println)
}

// prints
//
// 0
// 1
// 1
// 2
// 3

To illustrate, let's add some output to the definition fibs, so we see what's going on.

import scala.math.BigInt
object Main extends App {
  val fibs: LazyList[BigInt] =
    BigInt(0) #:: BigInt(1) #::
      fibs.zip(fibs.tail).map{ n =>
        println(s"Adding ${n._1} and ${n._2}")
        n._1 + n._2
      }
  fibs.take(5).foreach(println)
  fibs.take(6).foreach(println)
}

// prints
//
// 0
// 1
// Adding 0 and 1
// 1
// Adding 1 and 1
// 2
// Adding 1 and 2
// 3

// And then prints
//
// 0
// 1
// 1
// 2
// 3
// Adding 2 and 3
// 5

Note that the definition of fibs uses val not def. The memoization of the LazyList requires us to have somewhere to store the information and a val allows us to do that.

Further remarks about the semantics of LazyList:

- Though the LazyList changes as it is accessed, this does not contradict its immutability. Once the values are memoized they do not change. Values that have yet to be memoized still "exist", they simply haven't been computed yet.

- One must be cautious of memoization; it can eat up memory if you're not careful. That's because memoization of the LazyList creates a structure much like scala.collection.immutable.List. As long as something is holding on to the head, the head holds on to the tail, and so on recursively. If, on the other hand, there is nothing holding on to the head (e.g. if we used def to define the LazyList) then once it is no longer being used directly, it disappears.

- Note that some operations, including drop, dropWhile, flatMap or collect may process a large number of intermediate elements before returning.

Here's another example. Let's start with the natural numbers and iterate over them.

// We'll start with a silly iteration
def loop(s: String, i: Int, iter: Iterator[Int]): Unit = {
  // Stop after 200,000
  if (i < 200001) {
    if (i % 50000 == 0) println(s + i)
    loop(s, iter.next(), iter)
  }
}

// Our first LazyList definition will be a val definition
val lazylist1: LazyList[Int] = {
  def loop(v: Int): LazyList[Int] = v #:: loop(v + 1)
  loop(0)
}

// Because lazylist1 is a val, everything that the iterator produces is held
// by virtue of the fact that the head of the LazyList is held in lazylist1
val it1 = lazylist1.iterator
loop("Iterator1: ", it1.next(), it1)

// We can redefine this LazyList such that all we have is the Iterator left
// and allow the LazyList to be garbage collected as required.  Using a def
// to provide the LazyList ensures that no val is holding onto the head as
// is the case with lazylist1
def lazylist2: LazyList[Int] = {
  def loop(v: Int): LazyList[Int] = v #:: loop(v + 1)
  loop(0)
}
val it2 = lazylist2.iterator
loop("Iterator2: ", it2.next(), it2)

// And, of course, we don't actually need a LazyList at all for such a simple
// problem.  There's no reason to use a LazyList if you don't actually need
// one.
val it3 = new Iterator[Int] {
  var i = -1
  def hasNext = true
  def next(): Int = { i += 1; i }
}
loop("Iterator3: ", it3.next(), it3)

- In the fibs example earlier, the fact that tail works at all is of interest. fibs has an initial (0, 1, LazyList(...)), so tail is deterministic. If we defined fibs such that only 0 were concretely known, then the act of determining tail would require the evaluation of tail, so the computation would be unable to progress, as in this code:

// The first time we try to access the tail we're going to need more
// information which will require us to recurse, which will require us to
// recurse, which...
lazy val sov: LazyList[Vector[Int]] = Vector(0) #:: sov.zip(sov.tail).map { n => n._1 ++ n._2 }

The definition of fibs above creates a larger number of objects than necessary depending on how you might want to implement it. The following implementation provides a more "cost effective" implementation due to the fact that it has a more direct route to the numbers themselves:

lazy val fib: LazyList[Int] = {
  def loop(h: Int, n: Int): LazyList[Int] = h #:: loop(n, h + n)
  loop(1, 1)
}

The head, the tail and whether the list is empty or not can be initially unknown. Once any of those are evaluated, they are all known, though if the tail is built with #:: or #:::, it's content still isn't evaluated. Instead, evaluating the tails content is deferred until the tails empty status, head or tail is evaluated.

Delaying the evaluation of whether a LazyList is empty or not until it's needed allows LazyList to not eagerly evaluate any elements on a call to filter.

Only when it's further evaluated (which may be never!) any of the elements gets forced.

for example:

def tailWithSideEffect: LazyList[Nothing] = {
  println("getting empty LazyList")
  LazyList.empty
}

val emptyTail = tailWithSideEffect // prints "getting empty LazyList"

val suspended = 1 #:: tailWithSideEffect // doesn't print anything
val tail = suspended.tail // although the tail is evaluated, *still* nothing is yet printed
val filtered = tail.filter(_ => false) // still nothing is printed
filtered.isEmpty // prints "getting empty LazyList"

Type parameters

A: the type of the elements contained in this lazy list.

Attributes

See also: "Scala's Collection Library overview" section on LazyLists for more information.
Companion: object
Source: LazyList.scala
Supertypes: trait Serializable

trait LinearSeq[A]

trait LinearSeqOps[A, LazyList, LazyList[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, LazyList, LazyList[A]]

class AbstractSeq[A]

trait Seq[A]

trait SeqOps[A, LazyList, LazyList[A]]

trait Iterable[A]

class AbstractSeq[A]

trait Seq[A]

trait Equals

trait SeqOps[A, LazyList, LazyList[A]]

trait PartialFunction[Int, A]

trait Int => A

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, LazyList]

trait IterableOps[A, LazyList, LazyList[A]]

trait IterableOnceOps[A, LazyList, LazyList[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all

This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: LazyList.scala
Supertypes: trait SeqFactory[LazyList]

trait IterableFactory[LazyList]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: LazyList.type

Base trait for immutable linear sequences that have efficient head and tail

Attributes

Companion: object
Source: Seq.scala
Supertypes: trait LinearSeqOps[A, LinearSeq, LinearSeq[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, LinearSeq, LinearSeq[A]]

trait Seq[A]

trait SeqOps[A, LinearSeq, LinearSeq[A]]

trait Seq[A]

trait Equals

trait SeqOps[A, LinearSeq, LinearSeq[A]]

trait PartialFunction[Int, A]

trait Int => A

trait Iterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, LinearSeq]

trait IterableOps[A, LinearSeq, LinearSeq[A]]

trait IterableOnceOps[A, LinearSeq, LinearSeq[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class LazyList[A]

class List[A]

class ::[A]

object Nil.type

class Queue[A]

class Stream[A]

class Cons[A]

object Empty.type
Show all

Attributes

Companion: trait
Source: Seq.scala
Supertypes: class Delegate[LinearSeq]

trait SeqFactory[LinearSeq]

trait IterableFactory[LinearSeq]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: LinearSeq.type

Attributes

Source: Seq.scala
Supertypes: trait LinearSeqOps[A, CC, C]

trait SeqOps[A, CC, C]

trait SeqOps[A, CC, C]

trait IterableOps[A, CC, C]

trait IterableOnceOps[A, CC, C]

trait IterableOnce[A]

class Any
Show all
Known subtypes: class LazyList[A]

trait LinearSeq[A]

class List[A]

class ::[A]

object Nil.type

class Queue[A]

class Stream[A]

class Cons[A]

object Empty.type
Show all

A class for immutable linked lists representing ordered collections of elements of type A.

This class comes with two implementing case classes scala.Nil and scala.:: that implement the abstract members isEmpty, head and tail.

This class is optimal for last-in-first-out (LIFO), stack-like access patterns. If you need another access pattern, for example, random access or FIFO, consider using a collection more suited to this than List.

Performance

Time: List has O(1) prepend and head/tail access. Most other operations are O(n) on the number of elements in the list. This includes the index-based lookup of elements, length, append and reverse.

Space: List implements structural sharing of the tail list. This means that many operations are either zero- or constant-memory cost.

val mainList = List(3, 2, 1)
val with4 =    4 :: mainList  // re-uses mainList, costs one :: instance
val with42 =   42 :: mainList // also re-uses mainList, cost one :: instance
val shorter =  mainList.tail  // costs nothing as it uses the same 2::1::Nil instances as mainList

Attributes

See also

"Scala's Collection Library overview" section on Lists for more information.

Note

The functional list is characterized by persistence and structural sharing, thus offering considerable performance and space consumption benefits in some scenarios if used correctly. However, note that objects having multiple references into the same functional list (that is, objects that rely on structural sharing), will be serialized and deserialized with multiple lists, one for each reference to it. I.e. structural sharing is lost after serialization/deserialization.

Example

// Make a list via the companion object factory
val days = List("Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday")
// Make a list element-by-element
val when = "AM" :: "PM" :: Nil
// Pattern match
days match {
  case firstDay :: otherDays =>
    println("The first day of the week is: " + firstDay)
  case Nil =>
    println("There don't seem to be any week days.")
}

Companion

object

Source

List.scala

Supertypes

trait DefaultSerializable

trait Serializable

trait StrictOptimizedSeqOps[A, List, List[A]]

trait StrictOptimizedLinearSeqOps[A, List, List[A]]

trait StrictOptimizedSeqOps[A, List, List[A]]

trait StrictOptimizedIterableOps[A, List, List[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, List, List[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, List, List[A]]

class AbstractSeq[A]

trait Seq[A]

trait SeqOps[A, List, List[A]]

trait Iterable[A]

class AbstractSeq[A]

trait Seq[A]

trait Equals

trait SeqOps[A, List, List[A]]

trait PartialFunction[Int, A]

trait Int => A

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, List]

trait IterableOps[A, List, List[A]]

trait IterableOnceOps[A, List, List[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any

Show all

Known subtypes

class ::[A]

object Nil.type

This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: List.scala
Supertypes: trait Sum

trait Mirror

trait StrictOptimizedSeqFactory[List]

trait SeqFactory[List]

trait IterableFactory[List]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: List.type

This class implements immutable maps using a list-based data structure.

This class implements immutable maps using a list-based data structure. List map iterators and traversal methods visit key-value pairs in the order they were first inserted.

Entries are stored internally in reversed insertion order, which means the newest key is at the head of the list. As such, methods such as head and tail are O(n), while last and init are O(1). Other operations, such as inserting or removing entries, are also O(n), which makes this collection suitable only for a small number of elements.

Instances of ListMap represent empty maps; they can be either created by calling the constructor directly, or by applying the function ListMap.empty.

Type parameters

K: the type of the keys contained in this list map
V: the type of the values associated with the keys

Attributes

Companion: object
Source: ListMap.scala
Supertypes: trait DefaultSerializable

trait Serializable

trait StrictOptimizedMapOps[K, V, ListMap, ListMap[K, V]]

trait StrictOptimizedMapOps[K, V, ListMap, ListMap[K, V]]

trait StrictOptimizedIterableOps[(K, V), Iterable, ListMap[K, V]]

trait SeqMap[K, V]

trait SeqMap[K, V]

class AbstractMap[K, V]

trait Map[K, V]

trait MapOps[K, V, ListMap, ListMap[K, V]]

trait Iterable[(K, V)]

class AbstractMap[K, V]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, ListMap, Iterable]

trait MapOps[K, V, ListMap, ListMap[K, V]]

trait PartialFunction[K, V]

trait K => V

class AbstractIterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, ListMap[K, V]]

trait IterableOnceOps[(K, V), Iterable, ListMap[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all

This object provides a set of operations to create Iterable values.

Note that each element insertion takes O(n) time, which means that creating a list map with n elements will take O(n2) time. This makes the builder suitable only for a small number of elements.

Attributes

See also: "Scala's Collection Library overview" section on List Maps for more information.
Companion: class
Source: ListMap.scala
Supertypes: trait MapFactory[ListMap]

trait Serializable

class Object

trait Matchable

class Any
Self type: ListMap.type

This class implements immutable sets using a list-based data structure.

This class implements immutable sets using a list-based data structure. List set iterators and traversal methods visit elements in the order they were first inserted.

Elements are stored internally in reversed insertion order, which means the newest element is at the head of the list. As such, methods such as head and tail are O(n), while last and init are O(1). Other operations, such as inserting or removing entries, are also O(n), which makes this collection suitable only for a small number of elements.

Instances of ListSet represent empty sets; they can be either created by calling the constructor directly, or by applying the function ListSet.empty.

Type parameters

A: the type of the elements contained in this list set

Attributes

Companion: object
Source: ListSet.scala
Supertypes: trait DefaultSerializable

trait Serializable

trait StrictOptimizedSetOps[A, ListSet, ListSet[A]]

trait StrictOptimizedSetOps[A, ListSet, ListSet[A]]

trait StrictOptimizedIterableOps[A, ListSet, ListSet[A]]

class AbstractSet[A]

trait Set[A]

trait SetOps[A, ListSet, ListSet[A]]

trait Iterable[A]

class AbstractSet[A]

trait Set[A]

trait Equals

trait SetOps[A, ListSet, ListSet[A]]

trait A => Boolean

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, ListSet]

trait IterableOps[A, ListSet, ListSet[A]]

trait IterableOnceOps[A, ListSet, ListSet[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all

This object provides a set of operations to create Iterable values.

Note that each element insertion takes O(n) time, which means that creating a list set with n elements will take O(n2) time. This makes the builder suitable only for a small number of elements.

Attributes

Companion: class
Source: ListSet.scala
Supertypes: trait IterableFactory[ListSet]

trait Serializable

class Object

trait Matchable

class Any
Self type: ListSet.type

A companion object for long maps.

Attributes

Companion: class
Source: LongMap.scala
Supertypes: trait Sum

trait Mirror

class Object

trait Matchable

class Any
Self type: LongMap.type

Specialised immutable map structure for long keys, based on Fast Mergeable Long Maps by Okasaki and Gill.

Specialised immutable map structure for long keys, based on Fast Mergeable Long Maps by Okasaki and Gill. Essentially a trie based on binary digits of the integers.

Note: This class is as of 2.8 largely superseded by HashMap.

Type parameters

T: type of the values associated with the long keys.

Attributes

Companion: object
Source: LongMap.scala
Supertypes: trait Serializable

trait StrictOptimizedMapOps[Long, T, Map, LongMap[T]]

trait StrictOptimizedMapOps[Long, T, Map, LongMap[T]]

trait StrictOptimizedIterableOps[(Long, T), Iterable, LongMap[T]]

class AbstractMap[Long, T]

trait Map[Long, T]

trait MapOps[Long, T, Map, LongMap[T]]

trait Iterable[(Long, T)]

class AbstractMap[Long, T]

trait Map[Long, T]

trait Equals

trait MapFactoryDefaults[Long, T, Map, Iterable]

trait MapOps[Long, T, Map, LongMap[T]]

trait PartialFunction[Long, T]

trait Long => T

class AbstractIterable[(Long, T)]

trait Iterable[(Long, T)]

trait IterableFactoryDefaults[(Long, T), Iterable]

trait IterableOps[(Long, T), Iterable, LongMap[T]]

trait IterableOnceOps[(Long, T), Iterable, LongMap[T]]

trait IterableOnce[(Long, T)]

class Object

trait Matchable

class Any
Show all

Base type of immutable Maps

Attributes

Companion: object
Source: Map.scala
Supertypes: trait MapOps[K, V, Map, Map[K, V]]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, Map, Iterable]

trait MapOps[K, V, Map, Map[K, V]]

trait PartialFunction[K, V]

trait K => V

trait Iterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, Map[K, V]]

trait IterableOnceOps[(K, V), Iterable, Map[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all
Known subtypes: class AbstractMap[K, V]

class HashMap[K, V]

class IntMap[T]

class ListMap[K, V]

class LongMap[T]

class Map1[K, V]

class Map2[K, V]

class Map3[K, V]

class Map4[K, V]

class WithDefault[K, V]

class WithDefault[K, V]

class TreeMap[K, V]

class TreeSeqMap[K, V]

class VectorMap[K, V]

trait SeqMap[K, V]

trait SortedMap[K, V]
Show all

This object provides a set of operations to create Iterable values.

Attributes

Companion: trait
Source: Map.scala
Supertypes: trait MapFactory[Map]

trait Serializable

class Object

trait Matchable

class Any
Self type: Map.type

Base trait of immutable Maps implementations

Attributes

Source: Map.scala
Supertypes: trait MapOps[K, V, CC, C]

trait PartialFunction[K, V]

trait K => V

trait IterableOps[(K, V), Iterable, C]

trait IterableOnceOps[(K, V), Iterable, C]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all
Known subtypes: trait Map[K, V]

class AbstractMap[K, V]

class HashMap[K, V]

class IntMap[T]

class ListMap[K, V]

class LongMap[T]

class Map1[K, V]

class Map2[K, V]

class Map3[K, V]

class Map4[K, V]

class WithDefault[K, V]

class WithDefault[K, V]

class TreeMap[K, V]

class TreeSeqMap[K, V]

class VectorMap[K, V]

trait SeqMap[K, V]

trait SortedMap[K, V]

trait SortedMapOps[K, V, CC, C]

trait StrictOptimizedSortedMapOps[K, V, CC, C]

trait StrictOptimizedMapOps[K, V, CC, C]
Show all

Attributes

Source: List.scala
Supertypes: trait Singleton

trait Product

trait Mirror

trait Product

class List[Nothing]

trait DefaultSerializable

trait Serializable

trait StrictOptimizedSeqOps[Nothing, List, List[Nothing]]

trait StrictOptimizedLinearSeqOps[Nothing, List, List[Nothing]]

trait StrictOptimizedSeqOps[Nothing, List, List[Nothing]]

trait StrictOptimizedIterableOps[Nothing, List, List[Nothing]]

trait LinearSeq[Nothing]

trait LinearSeqOps[Nothing, List, List[Nothing]]

trait LinearSeq[Nothing]

trait LinearSeqOps[Nothing, List, List[Nothing]]

class AbstractSeq[Nothing]

trait Seq[Nothing]

trait SeqOps[Nothing, List, List[Nothing]]

trait Iterable[Nothing]

class AbstractSeq[Nothing]

trait Seq[Nothing]

trait Equals

trait SeqOps[Nothing, List, List[Nothing]]

trait PartialFunction[Int, Nothing]

trait Int => Nothing

class AbstractIterable[Nothing]

trait Iterable[Nothing]

trait IterableFactoryDefaults[Nothing, List]

trait IterableOps[Nothing, List, List[Nothing]]

trait IterableOnceOps[Nothing, List, List[Nothing]]

trait IterableOnce[Nothing]

class Object

trait Matchable

class Any
Show all
Self type: Nil.type

NumericRange is a more generic version of the Range class which works with arbitrary types.

NumericRange is a more generic version of the Range class which works with arbitrary types. It must be supplied with an Integral implementation of the range type.

Factories for likely types include Range.BigInt, Range.Long, and Range.BigDecimal. Range.Int exists for completeness, but the Int-based scala.Range should be more performant.

val r1 = Range(0, 100, 1)
val veryBig = Int.MaxValue.toLong + 1
val r2 = Range.Long(veryBig, veryBig + 100, 1)
assert(r1 sameElements r2.map(_ - veryBig))

Attributes

Companion: object
Source: NumericRange.scala
Supertypes: trait Serializable

trait StrictOptimizedSeqOps[T, IndexedSeq, IndexedSeq[T]]

trait StrictOptimizedSeqOps[T, IndexedSeq, IndexedSeq[T]]

trait StrictOptimizedIterableOps[T, IndexedSeq, IndexedSeq[T]]

trait IndexedSeq[T]

trait IndexedSeqOps[T, IndexedSeq, IndexedSeq[T]]

trait IndexedSeq[T]

trait IndexedSeqOps[T, IndexedSeq, IndexedSeq[T]]

class AbstractSeq[T]

trait Seq[T]

trait SeqOps[T, IndexedSeq, IndexedSeq[T]]

trait Iterable[T]

class AbstractSeq[T]

trait Seq[T]

trait Equals

trait SeqOps[T, IndexedSeq, IndexedSeq[T]]

trait PartialFunction[Int, T]

trait Int => T

class AbstractIterable[T]

trait Iterable[T]

trait IterableFactoryDefaults[T, IndexedSeq]

trait IterableOps[T, IndexedSeq, IndexedSeq[T]]

trait IterableOnceOps[T, IndexedSeq, IndexedSeq[T]]

trait IterableOnce[T]

class Object

trait Matchable

class Any
Show all
Known subtypes: class Exclusive[T]

class Inclusive[T]
Self type: NumericRange[T]

A companion object for numeric ranges.

Attributes

Companion: class
Source: NumericRange.scala
Supertypes: class Object

trait Matchable

class Any
Self type: NumericRange.type

Queue objects implement data structures that allow to insert and retrieve elements in a first-in-first-out (FIFO) manner.

Queue is implemented as a pair of Lists, one containing the in elements and the other the out elements. Elements are added to the in list and removed from the out list. When the out list runs dry, the queue is pivoted by replacing the out list by in.reverse, and in by Nil.

Adding items to the queue always has cost O(1). Removing items has cost O(1), except in the case where a pivot is required, in which case, a cost of O(n) is incurred, where n is the number of elements in the queue. When this happens, n remove operations with O(1) cost are guaranteed. Removing an item is on average O(1).

Attributes

See also: "Scala's Collection Library overview" section on Immutable Queues for more information.
Companion: object
Source: Queue.scala
Supertypes: trait DefaultSerializable

trait Serializable

trait StrictOptimizedSeqOps[A, Queue, Queue[A]]

trait StrictOptimizedLinearSeqOps[A, Queue, Queue[A]]

trait StrictOptimizedSeqOps[A, Queue, Queue[A]]

trait StrictOptimizedIterableOps[A, Queue, Queue[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, Queue, Queue[A]]

trait LinearSeq[A]

trait LinearSeqOps[A, Queue, Queue[A]]

class AbstractSeq[A]

trait Seq[A]

trait SeqOps[A, Queue, Queue[A]]

trait Iterable[A]

class AbstractSeq[A]

trait Seq[A]

trait Equals

trait SeqOps[A, Queue, Queue[A]]

trait PartialFunction[Int, A]

trait Int => A

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Queue]

trait IterableOps[A, Queue, Queue[A]]

trait IterableOnceOps[A, Queue, Queue[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all

This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: Queue.scala
Supertypes: trait StrictOptimizedSeqFactory[Queue]

trait SeqFactory[Queue]

trait IterableFactory[Queue]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: Queue.type

The Range class represents integer values in range [start;end) with non-zero step value step.

The Range class represents integer values in range [start;end) with non-zero step value step. It's a special case of an indexed sequence. For example:

val r1 = 0 until 10
val r2 = r1.start until r1.end by r1.step + 1
println(r2.length) // = 5

Ranges that contain more than Int.MaxValue elements can be created, but these overfull ranges have only limited capabilities. Any method that could require a collection of over Int.MaxValue length to be created, or could be asked to index beyond Int.MaxValue elements will throw an exception. Overfull ranges can safely be reduced in size by changing the step size (e.g. by 3) or taking/dropping elements. contains, equals, and access to the ends of the range (head, last, tail, init) are also permitted on overfull ranges.

Value parameters

end: the end of the range. For exclusive ranges, e.g. Range(0,3) or (0 until 3), this is one step past the last one in the range. For inclusive ranges, e.g. Range.inclusive(0,3) or (0 to 3), it may be in the range if it is not skipped by the step size. To find the last element inside a non-empty range, use last instead.
start: the start of this range.
step: the step for the range.

Attributes

Companion: object
Source: Range.scala
Supertypes: trait Serializable

trait StrictOptimizedSeqOps[Int, IndexedSeq, IndexedSeq[Int]]

trait StrictOptimizedSeqOps[Int, IndexedSeq, IndexedSeq[Int]]

trait StrictOptimizedIterableOps[Int, IndexedSeq, IndexedSeq[Int]]

trait IndexedSeq[Int]

trait IndexedSeqOps[Int, IndexedSeq, IndexedSeq[Int]]

trait IndexedSeq[Int]

trait IndexedSeqOps[Int, IndexedSeq, IndexedSeq[Int]]

class AbstractSeq[Int]

trait Seq[Int]

trait SeqOps[Int, IndexedSeq, IndexedSeq[Int]]

trait Iterable[Int]

class AbstractSeq[Int]

trait Seq[Int]

trait Equals

trait SeqOps[Int, IndexedSeq, IndexedSeq[Int]]

trait PartialFunction[Int, Int]

trait Int => Int

class AbstractIterable[Int]

trait Iterable[Int]

trait IterableFactoryDefaults[Int, IndexedSeq]

trait IterableOps[Int, IndexedSeq, IndexedSeq[Int]]

trait IterableOnceOps[Int, IndexedSeq, IndexedSeq[Int]]

trait IterableOnce[Int]

class Object

trait Matchable

class Any
Show all
Known subtypes: class Exclusive

class Inclusive
Self type: Range

Companion object for ranges.

Attributes

Companion: class
Source: Range.scala
Supertypes: class Object

trait Matchable

class Any
Self type: Range.type

Attributes

Companion: object
Source: Seq.scala
Supertypes: trait SeqOps[A, Seq, Seq[A]]

trait Seq[A]

trait Equals

trait SeqOps[A, Seq, Seq[A]]

trait PartialFunction[Int, A]

trait Int => A

trait Iterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Seq]

trait IterableOps[A, Seq, Seq[A]]

trait IterableOnceOps[A, Seq, Seq[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class AbstractSeq[A]

class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

class LazyList[A]

class List[A]

class ::[A]

object Nil.type

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Queue[A]

class Range

class Exclusive

class Inclusive

class Stream[A]

class Cons[A]

object Empty.type

class Vector[A]

class WrappedString

trait IndexedSeq[A]

trait LinearSeq[A]
Show all

This object provides a set of operations to create Iterable values.

Attributes

Companion: trait
Source: Seq.scala
Supertypes: class Delegate[Seq]

trait SeqFactory[Seq]

trait IterableFactory[Seq]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: Seq.type

A base trait for ordered, immutable maps.

Note that the equals method for SeqMap compares key-value pairs without regard to ordering.

All behavior is defined in terms of the abstract methods in SeqMap. It is sufficient for concrete subclasses to implement those methods. Methods that return a new map, in particular removed and updated, must preserve ordering.

Type parameters

K: the type of the keys contained in this linked map.
V: the type of the values associated with the keys in this linked map.

Attributes

Companion: object
Source: SeqMap.scala
Supertypes: trait SeqMap[K, V]

trait Map[K, V]

trait MapOps[K, V, SeqMap, SeqMap[K, V]]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, SeqMap, Iterable]

trait MapOps[K, V, SeqMap, SeqMap[K, V]]

trait PartialFunction[K, V]

trait K => V

trait Iterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, SeqMap[K, V]]

trait IterableOnceOps[(K, V), Iterable, SeqMap[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all
Known subtypes: class ListMap[K, V]

class TreeSeqMap[K, V]

class VectorMap[K, V]

Attributes

Companion: trait
Source: SeqMap.scala
Supertypes: trait MapFactory[SeqMap]

trait Serializable

class Object

trait Matchable

class Any
Self type: SeqMap.type

Attributes

Source: Seq.scala
Supertypes: trait SeqOps[A, CC, C]

trait IterableOps[A, CC, C]

trait IterableOnceOps[A, CC, C]

trait IterableOnce[A]

class Any
Known subtypes: trait IndexedSeqOps[A, CC, C]

class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

trait IndexedSeq[A]

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Range

class Exclusive

class Inclusive

class Vector[A]

class WrappedString

trait LinearSeqOps[A, CC, C]

class LazyList[A]

trait LinearSeq[A]

class List[A]

class ::[A]

object Nil.type

class Queue[A]

class Stream[A]

class Cons[A]

object Empty.type

trait Seq[A]

class AbstractSeq[A]

trait StrictOptimizedSeqOps[A, CC, C]
Show all

Base trait for immutable set collections

Attributes

Companion: object
Source: Set.scala
Supertypes: trait SetOps[A, Set, Set[A]]

trait Set[A]

trait Equals

trait SetOps[A, Set, Set[A]]

trait A => Boolean

trait Iterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Set]

trait IterableOps[A, Set, Set[A]]

trait IterableOnceOps[A, Set, Set[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class AbstractSet[A]

class ImmutableKeySet

class BitSet

class BitSet1

class BitSet2

class BitSetN

class HashSet[A]

class ListSet[A]

class Set1[A]

class Set2[A]

class Set3[A]

class Set4[A]

class ImmutableKeySortedSet

class TreeSet[A]

class ValueSet

trait SortedSet[A]
Show all

This object provides a set of operations to create Iterable values.

Attributes

Companion: trait
Source: Set.scala
Supertypes: trait IterableFactory[Set]

trait Serializable

class Object

trait Matchable

class Any
Self type: Set.type

Base trait for immutable set operations

Attributes

Source: Set.scala
Supertypes: trait SetOps[A, CC, C]

trait A => Boolean

trait IterableOps[A, CC, C]

trait IterableOnceOps[A, CC, C]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: trait Set[A]

class AbstractSet[A]

class ImmutableKeySet

class BitSet

class BitSet1

class BitSet2

class BitSetN

class HashSet[A]

class ListSet[A]

class Set1[A]

class Set2[A]

class Set3[A]

class Set4[A]

class ImmutableKeySortedSet

class TreeSet[A]

class ValueSet

trait SortedSet[A]

trait SortedSetOps[A, CC, C]

trait StrictOptimizedSortedSetOps[A, CC, C]

trait StrictOptimizedSetOps[A, CC, C]
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An immutable map whose key-value pairs are sorted according to an scala.math.Ordering on the keys.

Allows for range queries to be performed on its keys, and implementations must guarantee that traversal happens in sorted order, according to the map's scala.math.Ordering.

Type parameters

K: the type of the keys contained in this tree map.
V: the type of the values associated with the keys.

Attributes

Example

import scala.collection.immutable.SortedMap
// Make a SortedMap via the companion object factory
val weekdays = SortedMap(
  2 -> "Monday",
  3 -> "Tuesday",
  4 -> "Wednesday",
  5 -> "Thursday",
  6 -> "Friday"
)
// TreeMap(2 -> Monday, 3 -> Tuesday, 4 -> Wednesday, 5 -> Thursday, 6 -> Friday)
val days = weekdays ++ List(1 -> "Sunday", 7 -> "Saturday")
// TreeMap(1 -> Sunday, 2 -> Monday, 3 -> Tuesday, 4 -> Wednesday, 5 -> Thursday, 6 -> Friday, 7 -> Saturday)
val day3 = days.get(3) // Some("Tuesday")
val rangeOfDays = days.range(2, 5) // TreeMap(2 -> Monday, 3 -> Tuesday, 4 -> Wednesday)
val daysUntil2 = days.rangeUntil(2) // TreeMap(1 -> Sunday)
val daysTo2 = days.rangeTo(2) // TreeMap(1 -> Sunday, 2 -> Monday)
val daysAfter5 = days.rangeFrom(5) //  TreeMap(5 -> Thursday, 6 -> Friday, 7 -> Saturday)

Companion

object

Source

SortedMap.scala

Supertypes

trait SortedMapOps[K, V, SortedMap, SortedMap[K, V]]

trait SortedMap[K, V]

trait SortedMapFactoryDefaults[K, V, SortedMap, Iterable, Map]

trait SortedMapOps[K, V, SortedMap, SortedMap[K, V]]

trait SortedOps[K, SortedMap[K, V]]

trait Map[K, V]

trait MapOps[K, V, Map, SortedMap[K, V]]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, Map, Iterable]

trait MapOps[K, V, Map, SortedMap[K, V]]

trait PartialFunction[K, V]

trait K => V

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, SortedMap[K, V]]

trait IterableOnceOps[(K, V), Iterable, SortedMap[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any

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Known subtypes

class WithDefault[K, V]

class TreeMap[K, V]

Attributes

Companion: trait
Source: SortedMap.scala
Supertypes: class Delegate[SortedMap]

trait SortedMapFactory[SortedMap]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: SortedMap.type

Attributes

Source: SortedMap.scala
Supertypes: trait SortedMapOps[K, V, CC, C]

trait SortedOps[K, C]

trait MapOps[K, V, Map, C]

trait MapOps[K, V, Map, C]

trait PartialFunction[K, V]

trait K => V

trait IterableOps[(K, V), Iterable, C]

trait IterableOnceOps[(K, V), Iterable, C]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all
Known subtypes: trait SortedMap[K, V]

class WithDefault[K, V]

class TreeMap[K, V]

trait StrictOptimizedSortedMapOps[K, V, CC, C]
Self type: SortedMapOps[K, V, CC, C]

Base trait for sorted sets

Attributes

Companion: object
Source: SortedSet.scala
Supertypes: trait SortedSetOps[A, SortedSet, SortedSet[A]]

trait SortedSet[A]

trait SortedSetFactoryDefaults[A, SortedSet, Set]

trait SortedSetOps[A, SortedSet, SortedSet[A]]

trait SortedOps[A, SortedSet[A]]

trait Set[A]

trait SetOps[A, Set, SortedSet[A]]

trait Set[A]

trait Equals

trait SetOps[A, Set, SortedSet[A]]

trait (A) => Boolean

trait Iterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Set]

trait IterableOps[A, Set, SortedSet[A]]

trait IterableOnceOps[A, Set, SortedSet[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class BitSet

class BitSet1

class BitSet2

class BitSetN

class ImmutableKeySortedSet

class TreeSet[A]

class ValueSet
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This object provides a set of operations to create Iterable values.

Attributes

Companion: trait
Source: SortedSet.scala
Supertypes: class Delegate[SortedSet]

trait SortedIterableFactory[SortedSet]

class Delegate[SortedSet, Ordering]

trait EvidenceIterableFactory[SortedSet, Ordering]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: SortedSet.type

Attributes

Source: SortedSet.scala
Supertypes: trait SortedSetOps[A, CC, C]

trait SortedOps[A, C]

trait SetOps[A, Set, C]

trait SetOps[A, Set, C]

trait A => Boolean

trait IterableOps[A, Set, C]

trait IterableOnceOps[A, Set, C]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class BitSet

class BitSet1

class BitSet2

class BitSetN

trait SortedSet[A]

class ImmutableKeySortedSet

class TreeSet[A]

class ValueSet

trait StrictOptimizedSortedSetOps[A, CC, C]
Show all

Attributes

Source: Map.scala
Supertypes: trait StrictOptimizedMapOps[K, V, CC, C]

trait StrictOptimizedIterableOps[(K, V), Iterable, C]

trait MapOps[K, V, CC, C]

trait MapOps[K, V, CC, C]

trait PartialFunction[K, V]

trait K => V

trait IterableOps[(K, V), Iterable, C]

trait IterableOnceOps[(K, V), Iterable, C]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all
Known subtypes: class HashMap[K, V]

class IntMap[T]

class ListMap[K, V]

class LongMap[T]

trait StrictOptimizedSortedMapOps[K, V, CC, C]

class TreeMap[K, V]

class TreeSeqMap[K, V]

class VectorMap[K, V]
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Trait that overrides operations to take advantage of strict builders.

Attributes

Source: StrictOptimizedSeqOps.scala
Supertypes: trait StrictOptimizedSeqOps[A, CC, C]

trait StrictOptimizedIterableOps[A, CC, C]

trait SeqOps[A, CC, C]

trait SeqOps[A, CC, C]

trait IterableOps[A, CC, C]

trait IterableOnceOps[A, CC, C]

trait IterableOnce[A]

class Any
Show all
Known subtypes: class ArraySeq[A]

class ofBoolean

class ofByte

class ofChar

class ofDouble

class ofFloat

class ofInt

class ofLong

class ofRef[T]

class ofShort

class ofUnit

class List[A]

class ::[A]

object Nil.type

class NumericRange[T]

class Exclusive[T]

class Inclusive[T]

class Queue[A]

class Range

class Exclusive

class Inclusive

class Vector[A]
Show all

Attributes

Source: Set.scala
Supertypes: trait StrictOptimizedSetOps[A, CC, C]

trait StrictOptimizedIterableOps[A, CC, C]

trait SetOps[A, CC, C]

trait SetOps[A, CC, C]

trait A => Boolean

trait IterableOps[A, CC, C]

trait IterableOnceOps[A, CC, C]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class HashSet[A]

class ListSet[A]

trait StrictOptimizedSortedSetOps[A, CC, C]

class BitSet

class BitSet1

class BitSet2

class BitSetN

class TreeSet[A]
Show all

Attributes

Source: SortedMap.scala
Supertypes: trait StrictOptimizedMapOps[K, V, Map, C]

trait StrictOptimizedSortedMapOps[K, V, CC, C]

trait StrictOptimizedMapOps[K, V, Map, C]

trait StrictOptimizedIterableOps[(K, V), Iterable, C]

trait SortedMapOps[K, V, CC, C]

trait SortedMapOps[K, V, CC, C]

trait SortedOps[K, C]

trait MapOps[K, V, Map, C]

trait MapOps[K, V, Map, C]

trait PartialFunction[K, V]

trait K => V

trait IterableOps[(K, V), Iterable, C]

trait IterableOnceOps[(K, V), Iterable, C]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all
Known subtypes: class TreeMap[K, V]

Attributes

Source: SortedSet.scala
Supertypes: trait StrictOptimizedSetOps[A, Set, C]

trait StrictOptimizedSortedSetOps[A, CC, C]

trait StrictOptimizedSetOps[A, Set, C]

trait StrictOptimizedIterableOps[A, Set, C]

trait SortedSetOps[A, CC, C]

trait SortedSetOps[A, CC, C]

trait SortedOps[A, C]

trait SetOps[A, Set, C]

trait SetOps[A, Set, C]

trait A => Boolean

trait IterableOps[A, Set, C]

trait IterableOnceOps[A, Set, C]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all
Known subtypes: class BitSet

class BitSet1

class BitSet2

class BitSetN

class TreeSet[A]

An immutable SortedMap whose values are stored in a red-black tree.

This class is optimal when range queries will be performed, or when traversal in order of an ordering is desired. If you only need key lookups, and don't care in which order key-values are traversed in, consider using * scala.collection.immutable.HashMap, which will generally have better performance. If you need insertion order, consider a * scala.collection.immutable.SeqMap, which does not need to have an ordering supplied.

Type parameters

K: the type of the keys contained in this tree map.
V: the type of the values associated with the keys.

Value parameters

ordering: the implicit ordering used to compare objects of type A.

Attributes

See also

"Scala's Collection Library overview" section on Red-Black Trees for more information.

Example

import scala.collection.immutable.TreeMap
// Make a TreeMap via the companion object factory
val weekdays = TreeMap(
  2 -> "Monday",
  3 -> "Tuesday",
  4 -> "Wednesday",
  5 -> "Thursday",
  6 -> "Friday"
)
// TreeMap(2 -> Monday, 3 -> Tuesday, 4 -> Wednesday, 5 -> Thursday, 6 -> Friday)
val days = weekdays ++ List(1 -> "Sunday", 7 -> "Saturday")
// TreeMap(1 -> Sunday, 2 -> Monday, 3 -> Tuesday, 4 -> Wednesday, 5 -> Thursday, 6 -> Friday, 7 -> Saturday)
val day3 = days.get(3) // Some("Tuesday")
val rangeOfDays = days.range(2, 5) // TreeMap(2 -> Monday, 3 -> Tuesday, 4 -> Wednesday)
val daysUntil2 = days.rangeUntil(2) // TreeMap(1 -> Sunday)
val daysTo2 = days.rangeTo(2) // TreeMap(1 -> Sunday, 2 -> Monday)
val daysAfter5 = days.rangeFrom(5) //  TreeMap(5 -> Thursday, 6 -> Friday, 7 -> Saturday)

Companion

object

Source

TreeMap.scala

Supertypes

trait DefaultSerializable

trait Serializable

trait StrictOptimizedSortedMapOps[K, V, TreeMap, TreeMap[K, V]]

trait StrictOptimizedMapOps[K, V, Map, TreeMap[K, V]]

trait StrictOptimizedSortedMapOps[K, V, TreeMap, TreeMap[K, V]]

trait StrictOptimizedMapOps[K, V, Map, TreeMap[K, V]]

trait StrictOptimizedIterableOps[(K, V), Iterable, TreeMap[K, V]]

trait SortedMap[K, V]

trait SortedMapOps[K, V, TreeMap, TreeMap[K, V]]

trait SortedMap[K, V]

trait SortedMapFactoryDefaults[K, V, TreeMap, Iterable, Map]

trait SortedMapOps[K, V, TreeMap, TreeMap[K, V]]

trait SortedOps[K, TreeMap[K, V]]

class AbstractMap[K, V]

trait Map[K, V]

trait MapOps[K, V, Map, TreeMap[K, V]]

trait Iterable[(K, V)]

class AbstractMap[K, V]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, Map, Iterable]

trait MapOps[K, V, Map, TreeMap[K, V]]

trait PartialFunction[K, V]

trait K => V

class AbstractIterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, TreeMap[K, V]]

trait IterableOnceOps[(K, V), Iterable, TreeMap[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any

Show all

This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: TreeMap.scala
Supertypes: trait SortedMapFactory[TreeMap]

trait Serializable

class Object

trait Matchable

class Any
Self type: TreeMap.type

This class implements an immutable map that preserves order using a hash map for the key to value mapping to provide efficient lookup, and a tree for the ordering of the keys to provide efficient insertion/modification order traversal and destructuring.

By default insertion order (TreeSeqMap.OrderBy.Insertion) is used, but modification order (TreeSeqMap.OrderBy.Modification) can be used instead if so specified at creation.

The orderingBy(orderBy: TreeSeqMap.OrderBy): TreeSeqMap[K, V] method can be used to switch to the specified ordering for the returned map.

A key can be manually refreshed (i.e. placed at the end) via the refresh(key: K): TreeSeqMap[K, V] method (regardless of the ordering in use).

Internally, an ordinal counter is increased for each insertion/modification and then the current ordinal is used as key in the tree map. After 232 insertions/modifications the entire map is copied (thus resetting the ordinal counter).

Type parameters

K: the type of the keys contained in this map.
V: the type of the values associated with the keys in this map.

Attributes

Companion: object
Source: TreeSeqMap.scala
Supertypes: trait StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

trait StrictOptimizedMapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

trait StrictOptimizedIterableOps[(K, V), Iterable, TreeSeqMap[K, V]]

trait SeqMap[K, V]

trait SeqMap[K, V]

class AbstractMap[K, V]

trait Map[K, V]

trait MapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

trait Iterable[(K, V)]

class AbstractMap[K, V]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, TreeSeqMap, Iterable]

trait MapOps[K, V, TreeSeqMap, TreeSeqMap[K, V]]

trait PartialFunction[K, V]

trait K => V

class AbstractIterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, TreeSeqMap[K, V]]

trait IterableOnceOps[(K, V), Iterable, TreeSeqMap[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all

Attributes

Companion: class
Source: TreeSeqMap.scala
Supertypes: trait MapFactory[TreeSeqMap]

trait Serializable

class Object

trait Matchable

class Any
Self type: TreeSeqMap.type

This class implements immutable sorted sets using a tree.

Type parameters

A: the type of the elements contained in this tree set

Value parameters

ordering: the implicit ordering used to compare objects of type A

Attributes

See also: "Scala's Collection Library overview" section on Red-Black Trees for more information.
Companion: object
Source: TreeSet.scala
Supertypes: trait DefaultSerializable

trait Serializable

trait StrictOptimizedSortedSetOps[A, TreeSet, TreeSet[A]]

trait StrictOptimizedSetOps[A, Set, TreeSet[A]]

trait StrictOptimizedSortedSetOps[A, TreeSet, TreeSet[A]]

trait StrictOptimizedSetOps[A, Set, TreeSet[A]]

trait StrictOptimizedIterableOps[A, Set, TreeSet[A]]

trait SortedSet[A]

trait SortedSetOps[A, TreeSet, TreeSet[A]]

trait SortedSet[A]

trait SortedSetFactoryDefaults[A, TreeSet, Set]

trait SortedSetOps[A, TreeSet, TreeSet[A]]

trait SortedOps[A, TreeSet[A]]

class AbstractSet[A]

trait Set[A]

trait SetOps[A, Set, TreeSet[A]]

trait Iterable[A]

class AbstractSet[A]

trait Set[A]

trait Equals

trait SetOps[A, Set, TreeSet[A]]

trait (A) => Boolean

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Set]

trait IterableOps[A, Set, TreeSet[A]]

trait IterableOnceOps[A, Set, TreeSet[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all

This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: TreeSet.scala
Supertypes: trait SortedIterableFactory[TreeSet]

trait EvidenceIterableFactory[TreeSet, Ordering]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: TreeSet.type

This object provides a set of operations to create Iterable values.

Attributes

Companion: class
Source: Vector.scala
Supertypes: trait StrictOptimizedSeqFactory[Vector]

trait SeqFactory[Vector]

trait IterableFactory[Vector]

trait Serializable

class Object

trait Matchable

class Any
Show all
Self type: Vector.type

Vector is a general-purpose, immutable data structure.

Vector is a general-purpose, immutable data structure. It provides random access and updates in O(log n) time, as well as very fast append/prepend/tail/init (amortized O(1), worst case O(log n)). Because vectors strike a good balance between fast random selections and fast random functional updates, they are currently the default implementation of immutable indexed sequences.

Vectors are implemented by radix-balanced finger trees of width 32. There is a separate subclass for each level (0 to 6, with 0 being the empty vector and 6 a tree with a maximum width of 64 at the top level).

Tree balancing: - Only the first dimension of an array may have a size < WIDTH - In a data (central) array the first dimension may be up to WIDTH-2 long, in prefix1 and suffix1 up to WIDTH, and in other prefix and suffix arrays up to WIDTH-1 - prefix1 and suffix1 are never empty - Balancing does not cross the main data array (i.e. prepending never touches the suffix and appending never touches the prefix). The level is increased/decreased when the affected side plus main data is already full/empty - All arrays are left-aligned and truncated

In addition to the data slices (prefix1, prefix2, ..., dataN, ..., suffix2, suffix1) we store a running count of elements after each prefix for more efficient indexing without having to dereference all prefix arrays.

Attributes

Companion: object
Source: Vector.scala
Supertypes: trait DefaultSerializable

trait Serializable

trait StrictOptimizedSeqOps[A, Vector, Vector[A]]

trait StrictOptimizedSeqOps[A, Vector, Vector[A]]

trait StrictOptimizedIterableOps[A, Vector, Vector[A]]

trait IndexedSeq[A]

trait IndexedSeqOps[A, Vector, Vector[A]]

trait IndexedSeq[A]

trait IndexedSeqOps[A, Vector, Vector[A]]

class AbstractSeq[A]

trait Seq[A]

trait SeqOps[A, Vector, Vector[A]]

trait Iterable[A]

class AbstractSeq[A]

trait Seq[A]

trait Equals

trait SeqOps[A, Vector, Vector[A]]

trait PartialFunction[Int, A]

trait Int => A

class AbstractIterable[A]

trait Iterable[A]

trait IterableFactoryDefaults[A, Vector]

trait IterableOps[A, Vector, Vector[A]]

trait IterableOnceOps[A, Vector, Vector[A]]

trait IterableOnce[A]

class Object

trait Matchable

class Any
Show all

Attributes

Source: Vector.scala
Supertypes: trait ReusableBuilder[A, Vector[A]]

trait Builder[A, Vector[A]]

trait Growable[A]

trait Clearable

class Object

trait Matchable

class Any
Show all

This class implements immutable maps using a vector/map-based data structure, which preserves insertion order.

Unlike ListMap, VectorMap has amortized effectively constant lookup at the expense of using extra memory and generally lower performance for other operations

Type parameters

K: the type of the keys contained in this vector map.
V: the type of the values associated with the keys in this vector map.

Attributes

Companion: object
Source: VectorMap.scala
Supertypes: trait StrictOptimizedMapOps[K, V, VectorMap, VectorMap[K, V]]

trait StrictOptimizedMapOps[K, V, VectorMap, VectorMap[K, V]]

trait StrictOptimizedIterableOps[(K, V), Iterable, VectorMap[K, V]]

trait SeqMap[K, V]

trait SeqMap[K, V]

class AbstractMap[K, V]

trait Map[K, V]

trait MapOps[K, V, VectorMap, VectorMap[K, V]]

trait Iterable[(K, V)]

class AbstractMap[K, V]

trait Map[K, V]

trait Equals

trait MapFactoryDefaults[K, V, VectorMap, Iterable]

trait MapOps[K, V, VectorMap, VectorMap[K, V]]

trait PartialFunction[K, V]

trait K => V

class AbstractIterable[(K, V)]

trait Iterable[(K, V)]

trait IterableFactoryDefaults[(K, V), Iterable]

trait IterableOps[(K, V), Iterable, VectorMap[K, V]]

trait IterableOnceOps[(K, V), Iterable, VectorMap[K, V]]

trait IterableOnce[(K, V)]

class Object

trait Matchable

class Any
Show all

Attributes

Companion: class
Source: VectorMap.scala
Supertypes: trait MapFactory[VectorMap]

trait Serializable

class Object

trait Matchable

class Any
Self type: VectorMap.type

This class serves as a wrapper augmenting Strings with all the operations found in indexed sequences.

The difference between this class and StringOps is that calling transformer methods such as filter and map will yield an object of type WrappedString rather than a String.

Value parameters

self: a string contained within this wrapped string

Attributes

Companion: object
Source: WrappedString.scala
Supertypes: trait Serializable

trait IndexedSeq[Char]

trait IndexedSeqOps[Char, IndexedSeq, WrappedString]

trait IndexedSeq[Char]

trait IndexedSeqOps[Char, IndexedSeq, WrappedString]

class AbstractSeq[Char]

trait Seq[Char]

trait SeqOps[Char, IndexedSeq, WrappedString]

trait Iterable[Char]

class AbstractSeq[Char]

trait Seq[Char]

trait Equals

trait SeqOps[Char, IndexedSeq, WrappedString]

trait PartialFunction[Int, Char]

trait Int => Char

class AbstractIterable[Char]

trait Iterable[Char]

trait IterableFactoryDefaults[Char, IndexedSeq]

trait IterableOps[Char, IndexedSeq, WrappedString]

trait IterableOnceOps[Char, IndexedSeq, WrappedString]

trait IterableOnce[Char]

class Object

trait Matchable

class Any
Show all

A companion object for wrapped strings.

Attributes

Companion: class
Source: WrappedString.scala
Supertypes: trait SpecificIterableFactory[Char, WrappedString]

trait Factory[Char, WrappedString]

class Object

trait Matchable

class Any
Self type: WrappedString.type

scala.collection.immutable

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