Skip to content

Instance Method

flatten(on:)

Converts a collection of EventLoopFutures to an EventLoopFuture that wraps an array with the future values.
func flatten<Value>(on eventLoop: any EventLoop) -> EventLoopFuture<[Value]> where Self.Element == EventLoopFuture<Value>

Parameters

eventLoop

The event-loop to succeed the futures on.

Return Value

The succeeded values in an array, wrapped in an EventLoopFuture.

Discussion

Acts as a helper for the EventLoop.flatten(_:[EventLoopFuture<Value>]) method.

let futures = [el.future(1), el.future(2), el.future(3), el.future(4)]
let flattened = futures.flatten(on: el)
// flattened: EventLoopFuture([1, 2, 3, 4])