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import Swift

@frozen struct CollectionOfOne<Element>

A collection containing a single element.

@frozen struct Int

A signed integer value type.

init(_ element: Element)

Creates an instance containing just the given element.

var customMirror: Mirror { get }

var debugDescription: String { get }

A textual representation of the collection, suitable for debugging.

var endIndex: CollectionOfOne<Element>.Index { get }

The “past the end” position—that is, the position one greater than the last valid subscript argument.

var startIndex: CollectionOfOne<Element>.Index { get }

The position of the first element.

subscript(bounds: Range<Int>) -> CollectionOfOne<Element>.SubSequence { get set }

subscript(position: Int) -> Element { get set }

Accesses the element at the specified position.

func index(after i: CollectionOfOne<Element>.Index) -> CollectionOfOne<Element>.Index

Returns the position immediately after the given index.

func index(before i: CollectionOfOne<Element>.Index) -> CollectionOfOne<Element>.Index

Returns the position immediately before the given index.

func makeIterator() -> CollectionOfOne<Element>.Iterator

Returns an iterator over the elements of this collection.

@frozen struct Iterator

An iterator that produces one or zero instances of an element.

typealias Index = Int

typealias Indices = Range<Int>

typealias SubSequence = Slice<CollectionOfOne<Element>>