Structure

DispatchData

DispatchData objects manage a memory-based data buffer. The data buffer is exposed as a contiguous block of memory, but internally, it may be comprised of multiple, discontiguous blocks of memory.

Declaration

struct DispatchData

Topics

Type Aliases

typealias DispatchData.Iterator

A type that provides the collection's iteration interface and encapsulates its iteration state. By default, a collection conforms to the Sequence protocol by supplying a IndexingIterator as its associated Iterator type.

Instance Properties

var count: Int

The number of elements in the collection.

var first: UInt8?

The first element of the collection.

var indices: DefaultIndices<DispatchData>

The indices that are valid for subscripting the collection, in ascending order.

var isEmpty: Bool

A Boolean value indicating whether the collection is empty.

var last: UInt8?

The last element of the collection.

var lazy: LazyCollection<DispatchData>

A view onto this collection that provides lazy implementations of normally eager operations, such as map and filter.

var lazy: LazySequence<DispatchData>

A sequence containing the same elements as this sequence, but on which some operations, such as map and filter, are implemented lazily.

var underestimatedCount: Int

A value less than or equal to the number of elements in the sequence, calculated nondestructively.

var underestimatedCount: Int

A value less than or equal to the number of elements in the collection.

Instance Methods

func allSatisfy((UInt8) -> Bool) -> Bool

Returns a Boolean value indicating whether every element of a sequence satisfies a given predicate.

func compactMap<ElementOfResult>((UInt8) -> ElementOfResult?) -> [ElementOfResult]

Returns an array containing the non-nil results of calling the given transformation with each element of this sequence.

func contains(UInt8) -> Bool

Returns a Boolean value indicating whether the sequence contains the given element.

func contains(where: (UInt8) -> Bool) -> Bool

Returns a Boolean value indicating whether the sequence contains an element that satisfies the given predicate.

func distance(from: Int, to: Int) -> Int

Returns the distance between two indices.

func drop(while: (UInt8) -> Bool) -> Slice<DispatchData>

Returns a subsequence by skipping elements while predicate returns true and returning the remaining elements.

func dropFirst() -> Slice<DispatchData>

Returns a subsequence containing all but the first element of the sequence.

func dropFirst(Int) -> Slice<DispatchData>

Returns a subsequence containing all but the given number of initial elements.

func dropLast() -> Slice<DispatchData>

Returns a subsequence containing all but the last element of the sequence.

func dropLast(Int) -> Slice<DispatchData>

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: (UInt8, OtherSequence.Element) -> Bool) -> 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<DispatchData>

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((UInt8) -> Bool) -> [UInt8]

Returns an array containing, in order, the elements of the sequence that satisfy the given predicate.

func first(where: (UInt8) -> Bool) -> UInt8?

Returns the first element of the sequence that satisfies the given predicate.

func firstIndex(of: UInt8) -> Int?

Returns the first index where the specified value appears in the collection.

func firstIndex(where: (UInt8) -> Bool) -> Int?

Returns the first index in which an element of the collection satisfies the given predicate.

func forEach((UInt8) -> Void)

Calls the given closure on each element in the sequence in the same order as a for-in loop.

func formIndex(inout Int, offsetBy: Int)

Offsets the given index by the specified distance.

func formIndex(inout Int, offsetBy: Int, limitedBy: Int) -> Bool

Offsets the given index by the specified distance, or so that it equals the given limiting index.

func formIndex(after: inout Int)

Replaces the given index with its successor.

func formIndex(before: inout Int)

Replaces the given index with its predecessor.

func index(Int, offsetBy: Int) -> Int

Returns an index that is the specified distance from the given index.

func index(Int, offsetBy: Int, limitedBy: Int) -> Int?

Returns an index that is the specified distance from the given index, unless that distance is beyond a given limiting index.

func last(where: (UInt8) -> Bool) -> UInt8?

Returns the last element of the sequence that satisfies the given predicate.

func lastIndex(of: UInt8) -> Int?

Returns the last index where the specified value appears in the collection.

func lastIndex(where: (UInt8) -> Bool) -> Int?

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: (UInt8, UInt8) -> Bool) -> 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 map<T>((UInt8) -> T) -> [T]

Returns an array containing the results of mapping the given closure over the sequence’s elements.

func map<T>((UInt8) -> T) -> [T]

Returns an array containing the results of mapping the given closure over the sequence’s elements.

func max() -> UInt8?

Returns the maximum element in the sequence.

func max(by: (UInt8, UInt8) -> Bool) -> UInt8?

Returns the maximum element in the sequence, using the given predicate as the comparison between elements.

func min() -> UInt8?

Returns the minimum element in the sequence.

func min(by: (UInt8, UInt8) -> Bool) -> UInt8?

Returns the minimum element in the sequence, using the given predicate as the comparison between elements.

func prefix(Int) -> Slice<DispatchData>

Returns a subsequence, up to the specified maximum length, containing the initial elements of the collection.

func prefix(through: Int) -> Slice<DispatchData>

Returns a subsequence from the start of the collection through the specified position.

func prefix(upTo: Int) -> Slice<DispatchData>

Returns a subsequence from the start of the collection up to, but not including, the specified position.

func prefix(while: (UInt8) -> Bool) -> Slice<DispatchData>

Returns a subsequence containing the initial elements until predicate returns false and skipping the remaining elements.

func randomElement() -> UInt8?

Returns a random element of the collection.

func randomElement<T>(using: inout T) -> UInt8?

Returns a random element of the collection, using the given generator as a source for randomness.

func reduce<Result>(Result, (Result, UInt8) -> Result) -> Result

Returns the result of combining the elements of the sequence using the given closure.

func reduce<Result>(into: Result, (inout Result, UInt8) -> ()) -> Result

Returns the result of combining the elements of the sequence using the given closure.

func reversed() -> ReversedCollection<DispatchData>

Returns a view presenting the elements of the collection in reverse order.

func shuffled() -> [UInt8]

Returns the elements of the sequence, shuffled.

func shuffled<T>(using: inout T) -> [UInt8]

Returns the elements of the sequence, shuffled using the given generator as a source for randomness.

func sorted() -> [UInt8]

Returns the elements of the sequence, sorted.

func sorted(by: (UInt8, UInt8) -> Bool) -> [UInt8]

Returns the elements of the sequence, sorted using the given predicate as the comparison between elements.

func split(maxSplits: Int, omittingEmptySubsequences: Bool, whereSeparator: (UInt8) -> Bool) -> [Slice<DispatchData>]

Returns the longest possible subsequences of the collection, in order, that don’t contain elements satisfying the given predicate.

func split(separator: UInt8, maxSplits: Int, omittingEmptySubsequences: Bool) -> [Slice<DispatchData>]

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: (UInt8, PossiblePrefix.Element) -> Bool) -> 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) -> Slice<DispatchData>

Returns a subsequence, up to the given maximum length, containing the final elements of the collection.

func suffix(from: Int) -> Slice<DispatchData>

Returns a subsequence from the specified position to the end of the collection.

Subscripts

subscript<R>(R) -> Slice<DispatchData>

Accesses the contiguous subrange of the collection’s elements specified by a range expression.

subscript(Range<Int>) -> Slice<DispatchData>

Accesses a contiguous subrange of the collection’s elements.

Relationships