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Perl: the Markov chain saw

Re: I wonder...

by Jenda (Abbot)
on Jan 22, 2005 at 14:40 UTC ( #424233=note: print w/ replies, xml ) Need Help??

in reply to I wonder...
in thread Things you think you'll never use.

You mean something like:

$s = "xxyyyyyy"; $s =~ m/((x+)(??{'y' x length($2)}))/ and print "$1\n";
? :-)

We'd like to help you learn to help yourself
Look around you, all you see are sympathetic eyes
Stroll around the grounds until you feel at home
   -- P. Simon in Mrs. Robinson

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Re^2: I wonder...
by spurperl (Priest) on Jan 22, 2005 at 17:26 UTC
    Yes this is exactly what I meant :-) But it's not the point of my post. The point was: this matching task is a real challenge for 'normal regexes'. This technique using ??{} is indeed a way to solve it. I wondered whether there are other ways, using more standard regex operators.

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