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Re: Re: Re: Returning regexp pattern that was used to match

by Ven'Tatsu (Deacon)
on May 03, 2004 at 15:53 UTC ( #350058=note: print w/replies, xml ) Need Help??


in reply to Re: Re: Returning regexp pattern that was used to match
in thread Returning regexp pattern that was used to match

(?{ CODE }) will execute any perl code when the regex engine tries to match it. So for example:
my $string = "Bar"; $sting =~ /Foo(?{ print "Found a Foo\n" })|Bar(?{ print "Found a Bar\n +" })|Baz(?{ print "Found a Baz\n" })/;
Should print out 'Found a Bar'.

It's documented in the perlre man page under 'Extended Patterns'.

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