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Re^2: Regex matching a string beginning with "root: " but not containing another string

by jryan (Vicar)
on Sep 09, 2004 at 20:08 UTC ( #389865=note: print w/replies, xml ) Need Help??


in reply to Re: Regex matching a string beginning with "root: " but not containing another string
in thread Regex matching a string beginning with "root: " but not containing another string

Here's a different way to do it. IMHO, the regex it produces will be much easier and make much more sense.

use strict; my $email = "myself\@domain.of-my.own"; my $string = "root: myself\@domain.of-my.own"; my $re = inv_str_seq($email); $string =~ /^root: $re/ and print 1; sub inv_str_seq { my($string) = @_; my @c = map { quotemeta($_) } split '', $string; my $re = "\n [^$c[0]] \n"; $re .= " | " . join('',@c[0..$_-1]) . " [^$c[$_]]\n" for (1 .. $#c); $re = qr/$re/x; return qr/$re+ (?:[^$c[0]]|$)/x; }

Update: Moved the quotemeta up.

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[1nickt]: Corion this looks good, from the pod: "there are 9000+ variations that are detected correctly in the test files (see t/data/* for most of them). If you can think of any that I do not cover, please let me know."
[TCLion]: some moron put the date like this : Mon Feb 20 09:31:30 2017
[Corion]: 1nickt: Yes, the module sounds promising indeed
[1nickt]: "putting the date in correct order" how?
[Corion]: TCLion: Whee ;)
[TCLion]: need to put like this : 2017-02-20 09:30:53
[1nickt]: That's why I asked if you are using DateTime. It has a large number of supporting modules (the author likes the term 'eco-system') so if you are already creating a DateTime obj from your dates, this module would read in the mnoron-formatted 1s seamlessly
[TCLion]: when I put the date together it looks like : 2017-Feb-24 (month is the problem)
[1nickt]: good luck, then.
[TCLion]: looking at DateTime documentation in monastery now

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