Re: [Vala] Is there a way to use the Vala coroutines to achieve the same effect as in the following Python snippet (coroutines returning partial results in an iterator-like way) ?

[Luca Bruno <lethalman88 gmail com>]

On Fri, Jul 08, 2011 at 02:43:46PM +0200, Serge Hulne wrote:
> Is there a way to use the Vala coroutines to achieve the same effect
> as in the following Python snippet:
>
> /////////////////////////////
>
> ################
> # Python coroutine
> ###############*
>
>
> def countdown(n):
>    print "Counting down from", n
>    while n > 0:
>        yield n
>        n -= 1
>    print "Done counting down"
>
>
> # Example use
> if __name__ == '__main__':
>    for i in countdown(10):
>        print i
>
> ///////////////////////////////
>
> More precisely, is there a way to use a coroutine in order to achieve
> an iterator-like effect, namely:
>
> A regular routine would store the results in a data structure
> (array,list ...) and return the whole bunch of results, all at once,
> when the routine completes.
>
> In the python example, above, partial results can be "returned" (or
> rather transmitted using the yield keyword) as soon as they show up in
> the coroutine.
>
> - Can a similar effect be achieved in Vala using coroutines (or
> something else) ?

That's not a coroutine, it's a generator.

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