Instance Method

nonemptyFlatMap(orFlat:_:)

Checks that the future’s value (if any) returns false for .isEmpty. If the check fails, the provided alternate future is returned. Otherwise, the provided normal flatMap() callback is invoked.

func nonemptyFlatMap<NewValue>(orFlat alternate: @autoclosure @escaping () -> EventLoopFuture<NewValue>, _ transform: @escaping (Value) -> EventLoopFuture<NewValue>) -> EventLoopFuture<NewValue> where Value : Collection

class EventLoopFutureQueue
Allows you to queue closures that produce an EventLoopFuture, so each future only gets run if the previous ones complete, succeed, or fail.
func mapEach<Result>(KeyPath<Value.Element, Result>) -> EventLoopFuture<[Result]>
Gets the value of a key path for each element in the sequence that is wrapped by an EventLoopFuture.
func mapEach<Result>((Value.Element) -> Result) -> EventLoopFuture<[Result]>
Calls a closure on each element in the sequence that is wrapped by an EventLoopFuture.
func mapEachCompact<Result>(KeyPath<Value.Element, Result?>) -> EventLoopFuture<[Result]>
Gets the optional value of a key path for each element in the sequence that is wrapped by an EventLoopFuture.
func mapEachCompact<Result>((Value.Element) -> Result?) -> EventLoopFuture<[Result]>
Calls a closure, which returns an Optional, on each element in the sequence that is wrapped by an EventLoopFuture.
func mapEachFlat<ResultSegment>(KeyPath<Value.Element, ResultSegment>) -> EventLoopFuture<[ResultSegment.Element]>
Gets the collection value of a key path for each element in the sequence that is wrapped by an EventLoopFuture, combining the results into a single result collection.
func mapEachFlat<ResultSegment>((Value.Element) -> ResultSegment) -> EventLoopFuture<[ResultSegment.Element]>
Calls a closure which returns a collection on each element in the sequence that is wrapped by an EventLoopFuture, combining the results into a single result collection.
func flatMapEach(on: any EventLoop, (Value.Element) -> EventLoopFuture<Void>) -> EventLoopFuture<Void>
Calls a closure, which returns an EventLoopFuture, on each element in a sequence that is wrapped by an EventLoopFuture. No results from each future are expected.
func flatMapEach<Result>(on: any EventLoop, (Value.Element) -> EventLoopFuture<Result>) -> EventLoopFuture<[Result]>
Calls a closure, which returns an EventLoopFuture, on each element in a sequence that is wrapped by an EventLoopFuture.
func flatMapEachCompact<Result>(on: any EventLoop, (Value.Element) -> EventLoopFuture<Result?>) -> EventLoopFuture<[Result]>
Calls a closure, which returns an EventLoopFuture<Optional>, on each element in a sequence that is wrapped by an EventLoopFuture.
func flatMapEachThrowing<Result>((Value.Element) throws -> Result) -> EventLoopFuture<[Result]>
Calls a closure on each element in the sequence that is wrapped by an EventLoopFuture.
func flatMapEachCompactThrowing<Result>((Value.Element) throws -> Result?) -> EventLoopFuture<[Result]>
Calls a closure, which returns an Optional, on each element in the sequence that is wrapped by an EventLoopFuture.
func sequencedFlatMapEach((Value.Element) -> EventLoopFuture<Void>) -> EventLoopFuture<Void>
An overload of sequencedFlatMapEach(_:) which returns a Void future instead of [Void] when the result type of the transform closure is Void.
func sequencedFlatMapEach<Result>((Value.Element) -> EventLoopFuture<Result>) -> EventLoopFuture<[Result]>
A variant form of flatMapEach(on:_:) which guarantees:
func sequencedFlatMapEachCompact<Result>((Value.Element) -> EventLoopFuture<Result?>) -> EventLoopFuture<[Result]>
Variant of sequencedFlatMapEach(_:) which provides compactMap() semantics by allowing result values to be nil. Such results are not included in the output array.