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numbers in var

Old posts that have not been replied to for several years.
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Papillon
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Post by Papillon »

I can't seem to figure out how to check if a string consist of just numbers or if there is any other chars in it.. I've tried "string is" but it didn't seem to work :/ Any ideas?

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Petersen
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Post by Petersen »

well, 'string is digit $var' will work if you're using a newer tcl version. if you got old tcl version, then you can use something like 'catch {incr var}', which will return 0 if its an integer, and 1 if not (note that the variable is declared with no $ in the incr)
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