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Stack overflow

 [1/2] from: moeller_thorsten::gmx::de at: 28-Jun-2001 9:32

Hi, i have some problems with an app i put together. There is a wait loop which is testing for an time argument to come true and send/receive a mail. This wait-loop always ends up in an stack overflow error. receive: [ 15:45 (code ......)] wait-loop: does [ dispatch [1 [ if equal? now/time first receive [ do next receive ] ] wait-loop ]] Any suggestions? Perhaps there is anybody who can help me out with a little code to do this. Thorsten

 [2/2] from: joel:neely:fedex at: 28-Jun-2001 7:05

Hi, Thorsten, Thorsten Moeller wrote:
> Hi, > i have some problems with an app i put together. There is a
<<quoted lines omitted: 9>>
> ] ] > Any suggestions?
As I'm sure you know, DOES simply creates a function with neither parameters nor locals. Therefore, your WAIT-LOOP is recursive. There's no exit/return, and REBOL doesn't do tail-recursion elimination, so every "cycle" consumes more stack. Try wrapping DISPATCH in a loop of some sort and eliminating the recursion. HTH! -jn- ------------------------------------------------------------ Programming languages: compact, powerful, simple ... Pick any two! joel'dot'neely'at'fedex'dot'com

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