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Re: Challenge - Creative Way To Detect Alpha Characters

by TheEnigma (Pilgrim)
on Sep 13, 2004 at 18:12 UTC ( [id://390630]=note: print w/replies, xml ) Need Help??


in reply to Challenge - Creative Way To Detect Alpha Characters

I'm not sure I understand. Do you want to do something only if there are no alpha characters? Because isn't that what

if ( lc $foo eq uc $foo ) { }

would do?

I just want to make sure I understand the condition of the challenge, not that I'm up to it ;)

TheEnigma

Replies are listed 'Best First'.
Re^2: Challenge - Creative Way To Detect Alpha Characters
by Limbic~Region (Chancellor) on Sep 13, 2004 at 18:42 UTC
    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

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