A type that represents a position in the collection.
associatedtype Index : Comparable where Self.Index == Self.Indices.Element, Self.Indices.Element == Self.Indices.Index, Self.Indices.Index == Self.SubSequence.IndexValid indices consist of the position of every element and a “past the end” position that’s not valid for use as a subscript argument.
import Swiftprotocol Collection<Element> : SequenceA sequence whose elements can be traversed multiple times, nondestructively, and accessed by an indexed subscript.
protocol Comparable : EquatableA type that can be compared using the relational operators <, <=, >=, and >.
associatedtype Indices : Collection = DefaultIndices<Self> where Self.Indices == Self.Indices.SubSequenceA type that represents the indices that are valid for subscripting the collection, in ascending order.
associatedtype Element where Self.Element == Self.Iterator.ElementA type representing the sequence’s elements.
associatedtype SubSequence : Collection = Slice<Self> where Self.Element == Self.SubSequence.Element, Self.SubSequence == Self.SubSequence.SubSequenceA collection representing a contiguous subrange of this collection’s elements. The subsequence shares indices with the original collection.
associatedtype Elementassociatedtype Iterator = IndexingIterator<Self>A type that provides the collection’s iteration interface and encapsulates its iteration state.
var count: Int { get }The number of elements in the collection.
var endIndex: Self.Index { get }The collection’s “past the end” position—that is, the position one greater than the last valid subscript argument.
var indices: Self.Indices { get }The indices that are valid for subscripting the collection, in ascending order.
var isEmpty: Bool { get }A Boolean value indicating whether the collection is empty.
var startIndex: Self.Index { get }The position of the first element in a nonempty collection.
subscript(bounds: Range<Self.Index>) -> Self.SubSequence { get } Accesses a contiguous subrange of the collection’s elements.
subscript(position: Self.Index) -> Self.Element { get } Accesses the element at the specified position.
func distance(from start: Self.Index, to end: Self.Index) -> Int Returns the distance between two indices.
func formIndex(after i: inout Self.Index) Replaces the given index with its successor.
func index(_ i: Self.Index, offsetBy distance: Int) -> Self.Index Returns an index that is the specified distance from the given index.
func index(_ i: Self.Index, offsetBy distance: Int, limitedBy limit: Self.Index) -> Self.Index? Returns an index that is the specified distance from the given index, unless that distance is beyond a given limiting index.
func index(after i: Self.Index) -> Self.Index Returns the position immediately after the given index.
override func makeIterator() -> Self.Iterator Returns an iterator over the elements of the collection.
associatedtype Indexassociatedtype Index