Transform this stream by applying the given function asyncMapper to each of the elements as they pass through this processing step. The function returns a TaskTResult and the value of that task will be emitted downstream. The number of tasks that shall run in parallel is given as the first argument to SelectAsyncTIn, TOut, TMat(SourceTIn, TMat, Int32, FuncTIn, TaskTOut). These tasks may complete in any order, but the elements that are emitted downstream are in the same order as received from upstream. If the group by function asyncMapper throws an exception or if the Task is completed with failure and the supervision decision is Stop the stream will be completed with failure. If the group by function asyncMapper throws an exception or if the Task is completed with failure and the supervision decision is Resume or Restart the element is dropped and the stream continues.

Emits when the task returned by the provided function finishes for the next element in sequence

Backpressures when the number of tasks reaches the configured parallelism and the downstream backpressures or the first task is not completed

Completes when upstream completes and all tasks has been completed and all elements has been emitted

Cancels when downstream cancels

public static Source<TOut, TMat> SelectAsync<TIn, TOut, TMat>(
	this Source<TIn, TMat> flow,
	int parallelism,
	Func<TIn, Task<TOut>> asyncMapper
)

[<ExtensionAttribute>]
static member SelectAsync : 
        flow : Source<'TIn, 'TMat> * 
        parallelism : int * 
        asyncMapper : Func<'TIn, Task<'TOut>> -> Source<'TOut, 'TMat>