>
>
>
> Hello, please can you help me. Is it possible to specify number
matching in a regex, i.e. can you have something like:
>
> my $match =~ m/match_number_if_number_is_less_than_255/
>
> instead of my $match =~ m/(\d{3})/;
>
> if ($1<=255){my @array = @array +$1}?
>
Well your example is a fairly common one and gets a lot of attention in
the Mastering Regular Expressions book (which is excellent), and
concludes with:
[01]?\d\d?|2[0-4]\d|25[0-5]
But you should really not just use this willy-nilly, if *you* don't
understand it the person coming after you (which might just be you!)
won't likely either. So in many cases it is better to know your data,
do some pre-parsing then compare numbers using standard arithmetic as
you have shown. The real question is "what's wrong with what you have?"
http://danconia.org
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