On 2008.04.20 15:09:33 -0700, Don Stewart <[EMAIL PROTECTED]> scribbled 1.7K characters: > > Hey all, > > I'm pleased to announce a new major release of bytestring, the efficient > string library for Haskell, suitable for high-performance scenarios. > > This release is primarily an (incremental) performance improvement > release, though with some notable significant improvements, along with > long term test coverage and quality control changes. > > Highlights: > > * a long term performance bug with Ord instances, involving very > small strings, and Data.Map has been squashed. > > * everything's a little faster -- shootout problems showed a 1-5% > speedup just by switching to the new library. > > Thanks goes to the Hac4 Haskell Hackathon organisers, in Gothenburg, > Sweden, where the majority of this work to create this release took place. > > Key changes: > > * Data.Map short key performance greatly improved: > - 'words Map' running time: > 6.310s bytestring 0.9.0.1 > 1.071s bytestring 0.9.1.0 > > * Uses cheaper unsafeDupablePerformIO for allocation. > - tail recursive tight loops (fixes obscure stack overflow) > > * Generally faster: > - Shootout sum-file: 1.218s to 1.190s > - Shooout fasta: 9.210s to 8.811s > > * 4-5x faster small substring search > (breakSubstring/findSubstring/isInfixOf). > > * Extensive QuickCheck coverage reporting and improvements: > - http://code.haskell.org/~dons/tests/bytestring/hpc_index.html > > Get the code: > > http://hackage.haskell.org/cgi-bin/hackage-scripts/package/bytestring > > Note that if you upgrade to the new bytestring release, older packages > built against previous releases will still require the old bytestring > package. For best results, rebuild any bytestring-depending packages > against the new library only. > > Cheers, > Don
That's all good news; will this release of ByteString be used for GHC 6.8.3? I'm a little tired of linking everything against 0.9.0.1 just so I can use Yi (since GHC/the-GHC-API links against it). :) -- gwern NSDM USP Edens SAS kibo quarter NSES Gamma MP5k threat
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