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Author if statement
Matt

2006-01-24, 7:05 pm

Could someone tell me how to write this in TCL:

If the variable called VAR doesn't exist then set VAR to zero.

This:

if {![info exists VAR]} then {
set VAR 0
}

gives me a syntax error.

Thanks!
Matt
Andreas Leitgeb

2006-01-24, 7:05 pm

Matt <email@invalid.net> wrote:
> Could someone tell me how to write this in TCL:
> If the variable called VAR doesn't exist then set VAR to zero.
> This:
> if {![info exists VAR]} then {
> set VAR 0
> }
> gives me a syntax error.


This piece of code works perfectly well for me.

Are you sure, you didn't have a typo in it, when
you tried? Or did you execute it in something
else than tclsh ?

If you quoted the exact syntax-error, we could say more.
Matt

2006-01-24, 7:05 pm

Andreas Leitgeb wrote:
> Matt <email@invalid.net> wrote:
>
> This piece of code works perfectly well for me.
>
> Are you sure, you didn't have a typo in it, when
> you tried? Or did you execute it in something
> else than tclsh ?
>
> If you quoted the exact syntax-error, we could say more.


Oh sorry! You're right, the error was referring to a different
line in the script.

I think I'd better take a break now.
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