john:
On Wed, Apr 26, 2006 at 08:19:34PM +1000, Donald Bruce Stewart wrote:
bulat.ziganshin:
Hello Donald, btw, what will be really useful now, imho, is the interface to Text.Regex. how about working on it as next stage?
This is already done actually, here: http://www.cse.unsw.edu.au/~dons/code/lambdabot/Lib/Regex.hsc http://www.cse.unsw.edu.au/~dons/code/hmp3/Regex.hsc
I have a regex interface to PCRE and some neat typeclass tricks to give you perls (=~) operator but much more powerful here.
http://repetae.net/john/computer/haskell/JRegex/
It would be nice to get a PCRE binding in the libraries if it is available.
if there is interest in including this in the fptools libraries I can revisit and clean-up/modernize the code.
We really longed for a high performance regex lib in the standard libraries while working on the shootout earlier this year. Text.Regex is far too inefficient due to all the pack/unpackings. and even then C's regexes aren't so great. In fact, Chris K ended up writing Tex.Regex.Lazy as a result of this effort. Here's a nice benchmark for you code: http://shootout.alioth.debian.org/gp4/benchmark.php?test=regexdna&lang=all I wonder if JRegex would give us a faster entry? After fast IO, regexes are the other thing we need to improve for ghc 6.6, I think. So at least the people who worked on the shootout would be interested :) -- Don