Re: Negate a regular expression

Ken Foskey wrote:
On Fri, 2006-12-29 at 23:36 -0500, Mathew Snyder wrote:
I'm trying to set up an if clause to exit if an answer given is anything but
either any case combination of 'y' or 'yes'. This is what I have:

exit if $ans =~ m/[^y|^yes]/i;


exit if $ans =~ m/^(y|yes)[ \t\r\n]*$/i;

The brackets are a group, square brackets are a character class. It is
probably a good idea to ignore whitespace around the error as well.



But that doesn't negate does it? Doesn't that look for the match at the
beginning of the text? Also, wouldn't it make more sense to just use '\s'
instead of each individual special character for whitespace?
.

Relevant Pages

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  • Re: Negate a regular expression
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