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How to call a proc and not wait for it's return

Posted by smiller1971 (smiller1971), 4 October 2007
i have a foreach loop that calls a procedure. The foreach loop seems to stop until the procedure returns.  Is there a way to change this behavior? I'm using tcl 8.4.15

Thanks in advance!


Posted by admin (Graham Ellis), 5 October 2007
Steve, this is standard programming practise - when a subroutine / fucntion / macro / proc / method / command is called, the calling program waits for it to complete its actions before carrying on.   99% of the time that's what you want, as the code that carried on usually relies on the actions taken and results returned by the proc.

In those rare cases taht you want different behaviour, you can do so using spawn with the expect extension, or with something like an interp for multiple interpretters.  Beware - the syncronsation of multiple threads is quite tricky programming!

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