StructureSwift

Repeated

A collection whose elements are all identical.

@frozen struct Repeated<Element>

Overview

You create an instance of the Repeated collection by calling the repeatElement(_:count:) function. The following example creates a collection containing the name “Humperdinck” repeated five times:

let repeatedName = repeatElement("Humperdinck", count: 5)
for name in repeatedName {
    print(name)
}
// "Humperdinck"
// "Humperdinck"
// "Humperdinck"
// "Humperdinck"
// "Humperdinck"

Members

Typealiases

typealias Index
A type that represents a valid position in the collection.
typealias Indices
A type that represents the indices that are valid for subscripting the collection, in ascending order.

Foundation

typealias Regions

Instance Subscripts

subscript((UnboundedRange_) -> ()) -> Self.SubSequence
subscript(Range<Self.Index>) -> Slice<Self>
Accesses a contiguous subrange of the collection’s elements.
subscript<R>(R) -> Self.SubSequence
Accesses the contiguous subrange of the collection’s elements specified by a range expression.
subscript(Int) -> Element
Accesses the element at the specified position.

Instance Properties

var count: Int
The number of elements in the collection.
let count: Int
The number of elements in this collection.
var endIndex: Repeated<Element>.Index
The collection’s “past the end” position—that is, the position one greater than the last valid subscript argument.
var first: Self.Element?
The first element of the collection.
var isEmpty: Bool
A Boolean value indicating whether the collection is empty.
var last: Self.Element?
The last element of the collection.
var lazy: LazySequence<Self>
A sequence containing the same elements as this sequence, but on which some operations, such as map and filter, are implemented lazily.
let repeatedValue: Element
The value of every element in this collection.
var startIndex: Repeated<Element>.Index
The position of the first element in a nonempty collection.
var underestimatedCount: Int
A value less than or equal to the number of elements in the collection.
var underestimatedCount: Int
A value less than or equal to the number of elements in the sequence, calculated nondestructively.

Foundation

var regions: Repeated<Data>
A BidirectionalCollection of DataProtocol elements which compose a discontiguous buffer of memory. Each region is a contiguous buffer of bytes.

Instance Methods

func allSatisfy((Self.Element) throws -> Bool) rethrows -> Bool
Returns a Boolean value indicating whether every element of a sequence satisfies a given predicate.
func compactMap<ElementOfResult>((Self.Element) throws -> ElementOfResult?) rethrows -> [ElementOfResult]
Returns an array containing the non-nil results of calling the given transformation with each element of this sequence.
func contains(Self.Element) -> Bool
Returns a Boolean value indicating whether the sequence contains the given element.
func contains(where: (Self.Element) throws -> Bool) rethrows -> Bool
Returns a Boolean value indicating whether the sequence contains an element that satisfies the given predicate.
func difference<C>(from: C) -> CollectionDifference<Self.Element>
Returns the difference needed to produce this collection’s ordered elements from the given collection.
func difference<C>(from: C, by: (C.Element, Self.Element) -> Bool) -> CollectionDifference<Self.Element>
Returns the difference needed to produce this collection’s ordered elements from the given collection, using the given predicate as an equivalence test.
func drop(while: (Self.Element) throws -> Bool) rethrows -> Self.SubSequence
Returns a subsequence by skipping elements while predicate returns true and returning the remaining elements.
func dropFirst(Int) -> Self.SubSequence
Returns a subsequence containing all but the given number of initial elements.
func dropLast(Int) -> Self.SubSequence
Returns a subsequence containing all but the specified number of final elements.
func elementsEqual<OtherSequence>(OtherSequence) -> Bool
Returns a Boolean value indicating whether this sequence and another sequence contain the same elements in the same order.
func elementsEqual<OtherSequence>(OtherSequence, by: (Self.Element, OtherSequence.Element) throws -> Bool) rethrows -> Bool
Returns a Boolean value indicating whether this sequence and another sequence contain equivalent elements in the same order, using the given predicate as the equivalence test.
func enumerated() -> EnumeratedSequence<Self>
Returns a sequence of pairs (n, x), where n represents a consecutive integer starting at zero and x represents an element of the sequence.
func filter((Self.Element) throws -> Bool) rethrows -> [Self.Element]
Returns an array containing, in order, the elements of the sequence that satisfy the given predicate.
func first(where: (Self.Element) throws -> Bool) rethrows -> Self.Element?
Returns the first element of the sequence that satisfies the given predicate.
func firstIndex(of: Self.Element) -> Self.Index?
Returns the first index where the specified value appears in the collection.
func firstIndex(where: (Self.Element) throws -> Bool) rethrows -> Self.Index?
Returns the first index in which an element of the collection satisfies the given predicate.
func flatMap<SegmentOfResult>((Self.Element) throws -> SegmentOfResult) rethrows -> [SegmentOfResult.Element]
Returns an array containing the concatenated results of calling the given transformation with each element of this sequence.
func forEach((Self.Element) throws -> Void) rethrows
Calls the given closure on each element in the sequence in the same order as a for-in loop.
func formIndex(inout Self.Index, offsetBy: Int)
Offsets the given index by the specified distance.
func formIndex(inout Self.Index, offsetBy: Int, limitedBy: Self.Index) -> Bool
Offsets the given index by the specified distance, or so that it equals the given limiting index.
func formIndex(after: inout Self.Index)
Replaces the given index with its successor.
func formIndex(before: inout Self.Index)
Replaces the given index with its predecessor.
func index(Self.Index, offsetBy: Int, limitedBy: 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 joined() -> FlattenSequence<Self>
Returns the elements of this sequence of sequences, concatenated.
func joined(separator: String) -> String
Returns a new string by concatenating the elements of the sequence, adding the given separator between each element.
func joined<Separator>(separator: Separator) -> JoinedSequence<Self>
Returns the concatenated elements of this sequence of sequences, inserting the given separator between each element.
func joined(separator: String) -> String
Returns a new string by concatenating the elements of the sequence, adding the given separator between each element.
func last(where: (Self.Element) throws -> Bool) rethrows -> Self.Element?
Returns the last element of the sequence that satisfies the given predicate.
func lastIndex(of: Self.Element) -> Self.Index?
Returns the last index where the specified value appears in the collection.
func lastIndex(where: (Self.Element) throws -> Bool) rethrows -> Self.Index?
Returns the index of the last element in the collection that matches the given predicate.
func lexicographicallyPrecedes<OtherSequence>(OtherSequence) -> Bool
Returns a Boolean value indicating whether the sequence precedes another sequence in a lexicographical (dictionary) ordering, using the less-than operator (<) to compare elements.
func lexicographicallyPrecedes<OtherSequence>(OtherSequence, by: (Self.Element, Self.Element) throws -> Bool) rethrows -> Bool
Returns a Boolean value indicating whether the sequence precedes another sequence in a lexicographical (dictionary) ordering, using the given predicate to compare elements.
func makeIterator() -> IndexingIterator<Self>
Returns an iterator over the elements of the collection.
func map<T>((Self.Element) throws -> T) rethrows -> [T]
Returns an array containing the results of mapping the given closure over the sequence’s elements.
func map<T>((Self.Element) throws -> T) rethrows -> [T]
Returns an array containing the results of mapping the given closure over the sequence’s elements.
func max() -> Self.Element?
Returns the maximum element in the sequence.
func max(by: (Self.Element, Self.Element) throws -> Bool) rethrows -> Self.Element?
Returns the maximum element in the sequence, using the given predicate as the comparison between elements.
func min() -> Self.Element?
Returns the minimum element in the sequence.
func min(by: (Self.Element, Self.Element) throws -> Bool) rethrows -> Self.Element?
Returns the minimum element in the sequence, using the given predicate as the comparison between elements.
func prefix(Int) -> Self.SubSequence
Returns a subsequence, up to the specified maximum length, containing the initial elements of the collection.
func prefix(through: Self.Index) -> Self.SubSequence
Returns a subsequence from the start of the collection through the specified position.
func prefix(upTo: Self.Index) -> Self.SubSequence
Returns a subsequence from the start of the collection up to, but not including, the specified position.
func prefix(while: (Self.Element) throws -> Bool) rethrows -> Self.SubSequence
Returns a subsequence containing the initial elements until predicate returns false and skipping the remaining elements.
func randomElement() -> Self.Element?
Returns a random element of the collection.
func randomElement<T>(using: inout T) -> Self.Element?
Returns a random element of the collection, using the given generator as a source for randomness.
func reduce<Result>(Result, (Result, Self.Element) throws -> Result) rethrows -> Result
Returns the result of combining the elements of the sequence using the given closure.
func reduce<Result>(into: Result, (inout Result, Self.Element) throws -> ()) rethrows -> Result
Returns the result of combining the elements of the sequence using the given closure.
func reversed() -> ReversedCollection<Self>
Returns a view presenting the elements of the collection in reverse order.
func shuffled() -> [Self.Element]
Returns the elements of the sequence, shuffled.
func shuffled<T>(using: inout T) -> [Self.Element]
Returns the elements of the sequence, shuffled using the given generator as a source for randomness.
func sorted() -> [Self.Element]
Returns the elements of the sequence, sorted.
func sorted(by: (Self.Element, Self.Element) throws -> Bool) rethrows -> [Self.Element]
Returns the elements of the sequence, sorted using the given predicate as the comparison between elements.
func split(maxSplits: Int, omittingEmptySubsequences: Bool, whereSeparator: (Self.Element) throws -> Bool) rethrows -> [Self.SubSequence]
Returns the longest possible subsequences of the collection, in order, that don’t contain elements satisfying the given predicate.
func split(separator: Self.Element, maxSplits: Int, omittingEmptySubsequences: Bool) -> [Self.SubSequence]
Returns the longest possible subsequences of the collection, in order, around elements equal to the given element.
func split(separator: Self.Element, maxSplits: Int, omittingEmptySubsequences: Bool) -> [ArraySlice<Self.Element>]
Returns the longest possible subsequences of the sequence, in order, around elements equal to the given element.
func starts<PossiblePrefix>(with: PossiblePrefix) -> Bool
Returns a Boolean value indicating whether the initial elements of the sequence are the same as the elements in another sequence.
func starts<PossiblePrefix>(with: PossiblePrefix, by: (Self.Element, PossiblePrefix.Element) throws -> Bool) rethrows -> Bool
Returns a Boolean value indicating whether the initial elements of the sequence are equivalent to the elements in another sequence, using the given predicate as the equivalence test.
func suffix(Int) -> Self.SubSequence
Returns a subsequence, up to the given maximum length, containing the final elements of the collection.
func suffix(from: Self.Index) -> Self.SubSequence
Returns a subsequence from the specified position to the end of the collection.
func withContiguousStorageIfAvailable<R>((UnsafeBufferPointer<Self.Element>) throws -> R) rethrows -> R?
Executes a closure on the sequence’s contiguous storage.

Foundation

Removed Members

Instance Methods

func flatMap<ElementOfResult>((Self.Element) throws -> ElementOfResult?) rethrows -> [ElementOfResult]
func index(of: Self.Element) -> Self.Index?
Returns the first index where the specified value appears in the collection.

Repeated

Overview

Members

Typealiases

Foundation

Instance Subscripts

Instance Properties

Foundation

Instance Methods

Foundation

Conforms To

Foundation

Removed Members

Instance Methods