Re^2: Challenge - Creative Way To Detect Alpha Characters


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Re^2: Challenge - Creative Way To Detect Alpha Characters

by Limbic~Region (Chancellor)

on Sep 13, 2004 at 18:42 UTC ( [id://390636]=note: print w/replies, xml )

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in reply to Re: Challenge - Creative Way To Detect Alpha Characters
in thread Challenge - Creative Way To Detect Alpha Characters

TheEnigma,
Do you want to do something only if there are no alpha characters

Or the reciprocal - do something only if there are alpha chars. The trick is to figure it out creatively without using regular expressions. As you can see, assuming for a second plain jane ASCII, the only way lc $foo eq uc $foo can be true is if there are no alpha ([a-zA-Z]) characters in $foo.

Cheers - L~R