BinaryValues
A sequence of metadata binary values for a given key.
struct BinaryValues
A sequence of metadata binary values for a given key.
struct BinaryValues
import GRPCCore
A gRPC library for Swift written natively in Swift.
struct Metadata
A collection of metadata key-value pairs, found in RPC streams.
init()
Initialize an empty Metadata collection.
init(_ elements: some Sequence<Element>)
Initialize Metadata
from a Sequence
of Element
s.
init(arrayLiteral elements: (String, Value)...)
init(dictionaryLiteral elements: (String, Value)...)
var capacity: Int { get }
The Metadata collection’s capacity.
var description: String { get }
var endIndex: Index { get }
var startIndex: Index { get }
subscript(key: String) -> Values { get }
Get a Values
sequence for a given key.
subscript(position: Index) -> Element { get }
subscript(binaryValues key: String) -> BinaryValues { get }
A subscript to get a BinaryValues
sequence for a given key.
subscript(stringValues key: String) -> StringValues { get }
Get a StringValues
sequence for a given key.
mutating func add(contentsOf other: Metadata)
Add the contents of another Metadata
to this instance.
mutating func add(contentsOf other: some Sequence<Element>)
Add the contents of a Sequence
of key-value pairs to this Metadata
instance.
mutating func addBinary(_ binaryValue: [UInt8], forKey key: String)
Add a new key-value pair, where the value is binary data, in the form of [UInt8]
.
mutating func addString(_ stringValue: String, forKey key: String)
Add a new key-value pair, where the value is a string.
func index(after i: Index) -> Index
func index(before i: Index) -> Index
mutating func removeAll(keepingCapacity: Bool)
Removes all key-value pairs from this metadata instance.
mutating func removeAll(where predicate: (_ key: String, _ value: Value) throws -> Bool) rethrows
Removes all elements which match the given predicate.
mutating func removeAllValues(forKey key: String)
Removes all values associated with the given key.
mutating func replaceOrAddBinary(_ binaryValue: [UInt8], forKey key: String)
Adds a key-value pair to the collection, where the value is [UInt8]
.
mutating func replaceOrAddString(_ stringValue: String, forKey key: String)
Adds a key-value pair to the collection, where the value is a string.
mutating func reserveCapacity(_ minimumCapacity: Int)
Reserve the specified minimum capacity in the collection.
struct Index
struct StringValues
A sequence of metadata string values for a given key.
enum Value
A metadata value. It can either be a simple string, or binary data.
struct Values
A sequence of metadata values for a given key.
typealias Element = (key: String, value: Value)
protocol Sendable
protocol Sequence<Element>
A type that provides sequential, iterated access to its elements.
func makeIterator() -> Iterator
struct Iterator
An iterator for all binary data values associated with a given key.
var lazy: LazySequence<Self> { get }
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 { get }
A value less than or equal to the number of elements in the sequence, calculated nondestructively.
func allSatisfy(_ predicate: (Self.Element) throws -> Bool) rethrows -> Bool
Returns a Boolean value indicating whether every element of a sequence satisfies a given predicate.
func compactMap<ElementOfResult>(_ transform: (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(_ element: Self.Element) -> Bool
Returns a Boolean value indicating whether the sequence contains the given element.
func contains(where predicate: (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 predicate: (Self.Element) throws(E) -> Bool) throws(E) -> Int where E : Error
Returns the number of elements in the sequence that satisfy the given predicate.
func drop(while predicate: (Self.Element) throws -> Bool) rethrows -> DropWhileSequence<Self>
Returns a sequence by skipping the initial, consecutive elements that satisfy the given predicate.
func dropFirst(_ k: Int = 1) -> DropFirstSequence<Self>
Returns a sequence containing all but the given number of initial elements.
func dropLast(_ k: Int = 1) -> [Self.Element]
Returns a sequence containing all but the given number of final elements.
func elementsEqual<OtherSequence>(_ other: OtherSequence) -> Bool where OtherSequence : Sequence, Self.Element == OtherSequence.Element
Returns a Boolean value indicating whether this sequence and another sequence contain the same elements in the same order.
func elementsEqual<OtherSequence>(_ other: OtherSequence, by areEquivalent: (Self.Element, OtherSequence.Element) throws -> Bool) rethrows -> Bool where OtherSequence : Sequence
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(_ isIncluded: (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 predicate: (Self.Element) throws -> Bool) rethrows -> Self.Element?
Returns the first element of the sequence that satisfies the given predicate.
func flatMap<SegmentOfResult>(_ transform: (Self.Element) throws -> SegmentOfResult) rethrows -> [SegmentOfResult.Element] where SegmentOfResult : Sequence
Returns an array containing the concatenated results of calling the given transformation with each element of this sequence.
func forEach(_ body: (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 joined() -> FlattenSequence<Self>
Returns the elements of this sequence of sequences, concatenated.
func joined<Separator>(separator: Separator) -> JoinedSequence<Self> where Separator : Sequence, Separator.Element == Self.Element.Element
Returns the concatenated elements of this sequence of sequences, inserting the given separator between each element.
func lexicographicallyPrecedes<OtherSequence>(_ other: OtherSequence, by areInIncreasingOrder: (Self.Element, Self.Element) throws -> Bool) rethrows -> Bool where OtherSequence : Sequence, Self.Element == OtherSequence.Element
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, E>(_ transform: (Self.Element) throws(E) -> T) throws(E) -> [T] where E : Error
Returns an array containing the results of mapping the given closure over the sequence’s elements.
@warn_unqualified_access func max(by areInIncreasingOrder: (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.
@warn_unqualified_access func min(by areInIncreasingOrder: (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(_ maxLength: Int) -> PrefixSequence<Self>
Returns a sequence, up to the specified maximum length, containing the initial elements of the sequence.
func prefix(while predicate: (Self.Element) throws -> Bool) rethrows -> [Self.Element]
Returns a sequence containing the initial, consecutive elements that satisfy the given predicate.
func reduce<Result>(_ initialResult: Result, _ nextPartialResult: (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 initialResult: Result, _ updateAccumulatingResult: (inout Result, Self.Element) throws -> ()) rethrows -> Result
Returns the result of combining the elements of the sequence using the given closure.
func reversed() -> [Self.Element]
Returns an array containing the elements of this sequence in reverse order.
func shuffled() -> [Self.Element]
Returns the elements of the sequence, shuffled.
func shuffled<T>(using generator: inout T) -> [Self.Element] where T : RandomNumberGenerator
Returns the elements of the sequence, shuffled using the given generator as a source for randomness.
func sorted(by areInIncreasingOrder: (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 = Int.max, omittingEmptySubsequences: Bool = true, whereSeparator isSeparator: (Self.Element) throws -> Bool) rethrows -> [ArraySlice<Self.Element>]
Returns the longest possible subsequences of the sequence, in order, that don’t contain elements satisfying the given predicate. Elements that are used to split the sequence are not returned as part of any subsequence.
func split(separator: Self.Element, maxSplits: Int = Int.max, omittingEmptySubsequences: Bool = true) -> [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: PossiblePrefix) -> Bool where PossiblePrefix : Sequence, Self.Element == PossiblePrefix.Element
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: PossiblePrefix, by areEquivalent: (Self.Element, PossiblePrefix.Element) throws -> Bool) rethrows -> Bool where PossiblePrefix : Sequence
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(_ maxLength: Int) -> [Self.Element]
Returns a subsequence, up to the given maximum length, containing the final elements of the sequence.
func withContiguousStorageIfAvailable<R>(_ body: (UnsafeBufferPointer<Self.Element>) throws -> R) rethrows -> R?
func flatMap<ElementOfResult>(_ transform: (Self.Element) throws -> ElementOfResult?) rethrows -> [ElementOfResult]