A `Sequence` backed by an `Array`.

Since `Array`s are mutable, this class is private to the language module, where we can be sure the `Array` is not modified after the `ArraySequence` has been initialized.

By: Tom
See also `sequence()`

- `Anything`
  - `Object`
    - `ArraySequence` ...and other supertypes

- `ArraySequence`
  - `Object`
    - `Anything`
  - `Sequence`
    - `Iterable`
      - `Category`
    - `Sequential`
      - `List`
        - `Collection`
          - `Iterable`
            - `Category`
        - `Correspondence`
        - `Ranged`
          - `Iterable`
            - `Category`
      - `Ranged`
        - `Iterable`
          - `Category`

no subtypes hierarchy

Initializer
`ArraySequence(Array<Element> array)`

Attributes
`first` | Source Code `shared actual Element first` The first element returned by the iterator, if any, or `null` if this stream is empty. For a stream with an unstable iteration order, a different value might be produced each time `first` is evaluated. Refines `Sequence.first` ultimately refines `Iterable.first`
`last` | Source Code `shared actual Element last` The last element returned by the iterator, if any, or `null` if this stream is empty. In the case of an infinite stream, this operation never terminates; furthermore, this default implementation iterates all elements, which might be very expensive. Refines `Sequence.last` ultimately refines `Iterable.last`
`rest` | Source Code `shared actual Element[] rest` A stream containing all but the first element of this stream. For a stream with an unstable iteration order, a different stream might be produced each time `rest` is evaluated. Therefore, if the stream `i` has an unstable iteration order, the stream `{ i.first, *i.rest }` might not have the same elements as `i`. Refines `Sequence.rest` ultimately refines `Iterable.rest`
`size` | Source Code `shared actual Integer size` The number of elements returned by the `Iterable.iterator()` of this stream, if the iterator terminates. In the case of an infinite stream, this operation never terminates. Refines `Sequence.size` ultimately refines `Iterable.size`

Inherited Attributes
Attributes inherited from: `Object` `Object.hash`, `Object.string`
Attributes inherited from: `Collection<Element>` `Collection.string`
Attributes inherited from: `Correspondence<Key,Item>` `Correspondence.keys`
Attributes inherited from: `Iterable<Element,Absent>` `Iterable.coalesced`, `Iterable.cycled`, `Iterable.empty`, `Iterable.exceptLast`, `Iterable.first`, `Iterable.indexed`, `Iterable.last`, `Iterable.paired`, `Iterable.rest`, `Iterable.size`, `Iterable.string`
Attributes inherited from: `List<Element>` `List.hash`, `List.lastIndex`, `List.reversed`
Attributes inherited from: `[Element+]` `Sequence.string`
Attributes inherited from: `Element[]` `Sequential.string`

Methods
`clone` | Source Code `shared actual [Element+] clone()` A shallow copy of this collection, that is, a collection with identical elements which does not change if this collection changes. If this collection is immutable, it is acceptable to return a reference to this collection. If this collection is mutable, a newly instantiated collection must be returned. Refines `Sequence.clone` ultimately refines `Collection.clone`
`collect` | Source Code `shared actual default [Result+] collect<Result>(Result collecting(Element element))` Produce a new sequence containing the results of applying the given mapping to the elements of this stream. This operation is an eager counterpart to `Iterable.map()`. For any stream `it`, and mapping `f`:
    it.collect(f) == [*it.map(f)]
Parameters: `collecting` `nonempty sequence = array.collect(collecting)` Refines `Sequence.collect` ultimately refines `Iterable.collect`
`contains` | Source Code `shared actual Boolean contains(Object element)` Returns `true` if the given value belongs to this `Category`, that is, if it is an element of this `Category`, or `false` otherwise. For most `Category`s the following relationship is satisfied by every pair of elements `x` and `y`: if `x==y`, then `x in category == y in category` However, it is possible to form a useful `Category` consistent with some other equivalence relation, for example `===`. Therefore implementations of `contains()` which do not satisfy this relationship are tolerated. Refines `Sequence.contains` ultimately refines `Category.contains`
`getFromFirst` | Source Code `shared actual Element? getFromFirst(Integer index)` The `index`th element returned by an iterator of this stream, or `null` if there are fewer than `index+1` elements in the stream. For a stream with an unstable iteration order, a different value might be produced each time `getFromFirst(index)` is called for a given integer `index`. Refines `Iterable.getFromFirst`
`iterator` | Source Code `shared actual Iterator<Element> iterator()` An iterator for the elements belonging to this stream. Refines `Iterable.iterator`
`measure` | Source Code `shared actual Element[] measure(Integer from, Integer length)` Obtain a measure containing the mapped values starting from the given starting index, with the given `length`. If `length<=0`, the resulting measure is empty. The measure should contain the given number of elements of this stream, starting from the element at the given starting index, in the same order as they are produced by the `Iterable.iterator()` of the stream. In the case where the iterator would be exhausted before `length` elements are produced, the resulting measure contains only those elements which were produced before the iterator was exhausted, and the length of the measure is less then the given `length`. When the given index does not belong to this ranged object, the behavior is implementation dependent. Refines `Sequence.measure` ultimately refines `Ranged.measure`
`sort` | Source Code `shared actual [Element+] sort(Comparison comparing(Element x, Element y))` Produce a new sequence containing the elements of this stream, sorted according to the given comparator function imposing a partial order upon the elements of the stream. For convenience, the functions `byIncreasing()` and `byDecreasing()` produce suitable comparator functions. For example, this expression
    "Hello World!".sort(byIncreasing(Character.lowercased))
evaluates to the sequence `[ , !, d, e, H, l, l, l, o, o, r, W].` This operation is eager by nature. Note that the toplevel function `sort()` may be used to sort a stream of `Comparable` values according to the natural order of its elements. Parameters: `comparing` `nonempty sequence = array.sort(comparing)` Refines `Sequence.sort` ultimately refines `Iterable.sort`
`span` | Source Code `shared actual Element[] span(Integer from, Integer to)` Obtain a span containing the elements between the two given indices. The span should contain elements of this stream, starting from the element at the given starting index, and ending with the element at the given ending index, in the same order as they are produced by the `Iterable.iterator()` of the stream, except when the ending index occurs earlier than the starting index, in which case they occur in the opposite order. When one or both of the given indices does not belong to this ranged stream, the behavior is implementation dependent. Refines `Sequence.span` ultimately refines `Ranged.span`
`spanFrom` | Source Code `shared actual Element[] spanFrom(Integer from)` Obtain a span containing the elements between the given starting index and the last index of this ranged object. The span should contain elements of this stream, starting from the element at the given starting index, in the same order as they are produced by the `Iterable.iterator()` of the stream. When the given index does not belong to this ranged stream, the behavior is implementation dependent. Refines `Sequence.spanFrom` ultimately refines `Ranged.spanFrom`
`spanTo` | Source Code `shared actual Element[] spanTo(Integer to)` Obtain a span containing the elements between the first index of this ranged stream and given end index. The span should contain elements of this stream, up to the element at the given ending index, in the same order as they are produced by the `Iterable.iterator()` of the stream. When the given index does not belong to this ranged stream, the behavior is implementation dependent. Refines `Sequence.spanTo` ultimately refines `Ranged.spanTo`

Inherited Methods
Methods inherited from: `Object` `Object.equals()`
Methods inherited from: `Category<Element>` `Category.contains()`, `Category.containsAny()`, `Category.containsEvery()`
Methods inherited from: `Collection<Element>` `Collection.clone()`
Methods inherited from: `Correspondence<Key,Item>` `Correspondence.defines()`, `Correspondence.definesAny()`, `Correspondence.definesEvery()`, `Correspondence.get()`, `Correspondence.getAll()`
Methods inherited from: `Iterable<Element,Absent>` `Iterable.any()`, `Iterable.by()`, `Iterable.chain()`, `Iterable.collect()`, `Iterable.count()`, `Iterable.defaultNullElements()`, `Iterable.every()`, `Iterable.filter()`, `Iterable.find()`, `Iterable.findLast()`, `Iterable.flatMap()`, `Iterable.fold()`, `Iterable.follow()`, `Iterable.getFromFirst()`, `Iterable.interpose()`, `Iterable.iterator()`, `Iterable.longerThan()`, `Iterable.map()`, `Iterable.max()`, `Iterable.partition()`, `Iterable.product()`, `Iterable.reduce()`, `Iterable.repeat()`, `Iterable.scan()`, `Iterable.select()`, `Iterable.sequence()`, `Iterable.shorterThan()`, `Iterable.skip()`, `Iterable.skipWhile()`, `Iterable.sort()`, `Iterable.spread()`, `Iterable.take()`, `Iterable.takeWhile()`
Methods inherited from: `List<Element>` `List.endsWith()`, `List.equals()`, `List.firstInclusion()`, `List.firstIndexWhere()`, `List.firstOccurrence()`, `List.getFromLast()`, `List.includes()`, `List.includesAt()`, `List.inclusions()`, `List.indexesWhere()`, `List.initial()`, `List.lastInclusion()`, `List.lastIndexWhere()`, `List.lastOccurrence()`, `List.occurrences()`, `List.occurs()`, `List.occursAt()`, `List.patch()`, `List.slice()`, `List.startsWith()`, `List.sublist()`, `List.sublistFrom()`, `List.sublistTo()`, `List.terminal()`, `List.trim()`, `List.trimLeading()`, `List.trimTrailing()`
Methods inherited from: `Ranged<Index,Element,Subrange>` `Ranged.measure()`, `Ranged.span()`, `Ranged.spanFrom()`, `Ranged.spanTo()`
Methods inherited from: `Element[]` `Sequential.append()`, `Sequential.prepend()`, `Sequential.withLeading()`, `Sequential.withTrailing()`