Resume the task awaiting the next iteration point by having it return nil, which signifies the end of the iteration.
func finish() Calling this function more than once has no effect. After calling finish, the stream enters a terminal state and doesn’t produce any additional elements.
import _Concurrencystruct ContinuationA mechanism to interface between synchronous code and an asynchronous stream.
struct AsyncStream<Element>An asynchronous sequence generated from a closure that calls a continuation to produce new elements.
var onTermination: ((AsyncStream<Element>.Continuation.Termination) -> Void)? { get nonmutating set }A callback to invoke when canceling iteration of an asynchronous stream.
@discardableResult func yield() -> AsyncStream<Element>.Continuation.YieldResult where Element == () Resume the task awaiting the next iteration point by having it return normally from its suspension point.
@discardableResult func yield(_ value: sending Element) -> AsyncStream<Element>.Continuation.YieldResult Resume the task awaiting the next iteration point by having it return normally from its suspension point with a given element.
@discardableResult func yield(with result: sending Result<Element, Never>) -> AsyncStream<Element>.Continuation.YieldResult Resume the task awaiting the next iteration point by having it return normally from its suspension point with a given result’s success value.
enum BufferingPolicyA strategy that handles exhaustion of a buffer’s capacity.
enum TerminationA type that indicates how the stream terminated.
enum YieldResultA type that indicates the result of yielding a value to a client, by way of the continuation.