I piped the output of fasta (with N=250,000) into the entries on the wiki [2] which I compiled with 'ghc -O2'. Watching with 'top', I saw over 400MB of RSIZE by the end. So perhaps I am benchmarking wrong, since this is the same memory usage as the original reverse-compliment entry, and roughly the same speed. Donald Bruce Stewart wrote:

I've added an entry on the hawiki[1] for the regex-dna benchmark, and posted a smaller (down to 15 lines), faster entry for [2]reverse-complement, using string indexing from Alex.

Cheers, Don

[1] http://haskell.org/hawiki/ShootoutEntry [2] http://haskell.org/hawiki/ReverseComplementEntry

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