Single Protocol Reference

public protocol Single<Element> : Subscribable

A Subscribable implementation whereby only a single result is expected to be emitted to the subscriber.


                    
                    
                    subscribe(_:)

Declaration

Swift

@discardableResult
func subscribe(_ observer: @escaping Observer) -> any Disposable

onSuccess(handler:) Extension method
Subscribe an handler to this Single which will be called at most once if the Single is successful.
Declaration
Swift

@discardableResult func onSuccess<Value>(handler: @escaping (_ output: Value) -> Void) -> Disposable where Value == Self.Element.ValueType, Self.Element : ValueExtractor
Return Value

A Disposable that can be disposed if the handler is no longer necessary.
onFailure(handler:) Extension method
Subscribe an handler to this Single which will be called at most once if the Single is unsuccessful.
Declaration
Swift

@discardableResult func onFailure<ErrorType>(handler: @escaping (_ error: ErrorType) -> Void) -> Disposable where ErrorType == Self.Element.ErrorType, Self.Element : ErrorExtractor
Return Value

A Disposable that can be disposed if the handler is no longer necessary.
toAsync() Extension method, asynchronous
Transforms this single into an async function that can be awaited on.
Declaration
Swift

func toAsync<Value>() async throws -> Value where Self.Element == Result<Value, any Error>