Funny, I thought I was getting back inside the box by using a simple regex. :-)

I've never been totally comfortable with the zero-width assertions, because logically it seems to me that that should keep matching in the same spot. If zero-width really means zero-width, the next match should start at the same point and match the same string again, shouldn't it? I guess the semantics of it just bug me. I feel like I should have to use something like this to make sure it advances a character:

m[([ACGT](?=[ACGT]{6}))];

Anyway, I'm impressed that the regex does as well as it does, considering how simple it was to implement.

Aaron B.
Available for small or large Perl jobs; see my home node.

In reply to Re^6: counting the number of 16384 pattern matches in a large DNA sequence by aaron_baugher
in thread counting the number of 16384 pattern matches in a large DNA sequence by anonym

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