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Async Workflows, return keyword
f#async

Hi,

Doesn't "return" interrupt computations in an async workflow and return the given value ? (like a "break" keyword). If not, what is its impact ? Is there a way (other than using nested if/else and exceptions) to interrupt computations if such or such condition is not met?

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async
  { return()
    System.Console.WriteLine 5 //printed anyway
  } |> Async.Run

Thanks

.

Return just takes a ground value and lifts it to be a computation that produces that value.

I think what you are thinking of is "yield". However Yield() is not implemented for async workflows.

By on 11/14/2008 3:34 PM ()

I thought that since Async workflows must end with return x when a value is returned, the return keyword may be used to terminate computations "in the middle"

The case was more something like :

if someCondition then
debug "no error, but no need to process further"
return ()
...

Thanks for your answer

By on 11/14/2008 3:45 PM ()

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