Structureswift 6.0.1Swift
UTF8View
- iOS
- 13.0+
- macOS
- 10.15+
- tvOS
- 13.0+
- watchOS
- 6.0+
@frozen struct UTF8View
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Types
struct Properties
A value that provides access to properties of a Unicode scalar that are defined by the Unicode standard.
struct UTF16View
Type members
init(Unicode.Scalar
) Creates a duplicate of the given Unicode scalar.
init?(String
) init?(Int
) Creates a Unicode scalar with the specified numeric value.
init?(UInt16
) Creates a Unicode scalar with the specified numeric value.
init?(UInt32
) Creates a Unicode scalar with the specified numeric value.
init(UInt8
) Creates a Unicode scalar with the specified numeric value.
init(unicodeScalarLiteral: Unicode.Scalar
) Creates a Unicode scalar with the specified value.
static func < (lhs: Unicode.Scalar, rhs: Unicode.Scalar
) -> Bool static func == (lhs: Unicode.Scalar, rhs: Unicode.Scalar
) -> Bool
Instance members
var customMirror: Mirror
A mirror that reflects the
Unicode.Scalar
instance.var debugDescription: String
An escaped textual representation of the Unicode scalar, suitable for debugging.
var description: String
A textual representation of the Unicode scalar.
var isASCII: Bool
A Boolean value indicating whether the Unicode scalar is an ASCII character.
var properties: Unicode.Scalar.Properties
Properties of this scalar defined by the Unicode standard.
var utf16: Unicode.Scalar.UTF16View
var utf8: Unicode.Scalar.UTF8View
var value: UInt32
A numeric representation of the Unicode scalar.
func escaped(asASCII: Bool
) -> String Returns a string representation of the Unicode scalar.
func hash(into: inout Hasher
) Hashes the essential components of this value by feeding them into the given hasher.
func write<Target>(to: inout Target
) Writes the textual representation of the Unicode scalar into the given output stream.
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var customPlaygroundQuickLook: _PlaygroundQuickLook
A custom playground Quick Look for the
Unicode.Scalar
instance.
Citizens in Swift
Conformances
protocol BidirectionalCollection<Element>
A collection that supports backward as well as forward traversal.
protocol BitwiseCopyable
protocol Collection<Element>
A sequence whose elements can be traversed multiple times, nondestructively, and accessed by an indexed subscript.
protocol Copyable
A type whose values can be implicitly or explicitly copied.
protocol Escapable
protocol RandomAccessCollection<Element>
A collection that supports efficient random-access index traversal.
protocol Sendable
protocol Sequence<Element>
A type that provides sequential, iterated access to its elements.
Typealiases
Instance members
var endIndex: Int
The “past the end” position—that is, the position one greater than the last valid subscript argument.
var startIndex: Int
The position of the first code unit.
subscript(Int
) -> UTF8.CodeUnit Accesses the code unit at the specified position.
Instance features
var count: Int
The number of elements in the collection.
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
andfilter
, are implemented lazily.var underestimatedCount: Int
A value less than or equal to the number of elements in the collection.
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 count<E>(where: (Self.Element)
throws Returns the number of elements in the sequence that satisfy 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
returnstrue
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
) 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 indices(of: Self.Element
) -> RangeSet<Self.Index> Returns the indices of all the elements that are equal to the given element.
func indices(where: (Self.Element) throws -> Bool
) rethrows -> RangeSet<Self.Index> Returns the indices of all the elements that match the given predicate.
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, E>((Self.Element)
throws Returns an array containing the results of mapping the given closure over the sequence’s elements.
func map<T, E>((Self.Element)
throws 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
returnsfalse
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 removingSubranges(RangeSet<Self.Index>
) -> DiscontiguousSlice<Self> Returns a collection of the elements in this collection that are not represented by the given range set.
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 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?
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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.