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Perl: the Markov chain saw

Re: Re: self limiting regex help

by spq (Friar)
on May 22, 2002 at 15:34 UTC ( #168480=note: print w/ replies, xml ) Need Help??

in reply to Re: self limiting regex help
in thread self limiting regex help

Hmm, that looks like it would match fine. But I don't see how it would limit a string to containing any number of occurances of only two of the alternate codes?

In case I wasn't clear in my first posting, the regex should match on a string that is within the QC criteria, but fail if not. So:


Would be matched, but:


Wouldn't, because the N near the end introduces a third ambiguity code.

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