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Re: regex substring negation

by johngg (Abbot)
on Jul 02, 2007 at 09:27 UTC ( #624403=note: print w/replies, xml ) Need Help??


in reply to regex substring negation

If you mean that you only want the match to succeed if a string doesn't contain a substring you could use a negative look-ahead.

my $string = q{the quick black fox}; my $substring = q{brown}; if ( $string =~ m{\A(?!.*\Q$substring\E).*fox} ) { print qq{Found a non-$substring fox\n}; } else { print qq{Match failed, $substring seen\n}; }

I hope this is of use.

Cheers,

JohnGG

Update: Typo, s/negatine/negative/

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