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.

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: DefaultRandomAccessIndices<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: LazyRandomAccessCollection<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 lazy: LazyBidirectionalCollection<DispatchData>

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

var underestimatedCount: Int

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

var underestimatedCount: Int

Returns a value less than or equal to the number of elements in the sequence, nondestructively.

Instance Methods

func contains(UInt8)

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

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

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

func drop(while: (UInt8) -> Bool)

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

func dropFirst()

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

func dropFirst(Int)

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

func dropLast()

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

func dropLast(Int)

Returns a subsequence containing all but the specified number of final elements.

func elementsEqual<OtherSequence>(OtherSequence)

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, UInt8) -> 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()

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)

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

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

Returns the first element of the sequence that 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 index(of: UInt8)

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

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

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

func lexicographicallyPrecedes<OtherSequence>(OtherSequence)

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)

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)

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

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

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

func max()

Returns the maximum element in the sequence.

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

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

func min()

Returns the minimum element in the sequence.

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

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

func prefix(Int)

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

func prefix(through: Int)

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

func prefix(upTo: Int)

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

func prefix(while: (UInt8) -> Bool)

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

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

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

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

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

func reversed()

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

func sorted()

Returns the elements of the sequence, sorted.

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

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)

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)

Returns the longest possible subsequences of the collection, in order, around elements equal to the given element.

func starts<PossiblePrefix>(with: PossiblePrefix)

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, UInt8) -> 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)

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

func suffix(from: Int)

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

Subscripts

subscript(Range<Int>)

Accesses a contiguous subrange of the collection’s elements.

Relationships