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| P is for Practical | |
| PerlMonks |
Re: TK Entry - Validating Inputby Crackers2 (Parson) |
| on Mar 06, 2013 at 14:49 UTC ( [id://1022016]=note: print w/replies, xml ) | Need Help?? |
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Your regex m/^[0-9a-fA-F]+/ doesn't match the empty string, so when you try to remove the last character your validation fails and the remove is disallowed. Try return 0 unless( $_[0] =~ m/^[0-9a-fA-F]*/ ) instead.
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