Haskell Weekly News: January 9, 2006 Greetings, and thanks for reading the 19th issue of HWN, a weekly newsletter for the Haskell community. Each Monday, new editions are posted to [1]the Haskell mailing list and to [2]The Haskell Sequence. [3]RSS is also available. 1. http://www.haskell.org/mailman/listinfo/haskell 2. http://sequence.complete.org/ 3. http://sequence.complete.org/node/feed New Releases * A Faster Binary. Bulat Ziganshin [4]posted a preliminary optimised Binary library, achieving excellent (de)serialization speeds of around 50 Mb/s in testing. 4. http://article.gmane.org/gmane.comp.lang.haskell.cafe/10803 Resources and Tools * Haskell mail. Simon Peyton-Jones has [5]put together a [6]complete archive of the Haskell mailing list since its birth in Sept 1990 until Oct 2000 -- the date where the [7]current mailman archive takes over. This is a valuable resource for the community. 5. http://article.gmane.org/gmane.comp.lang.haskell.general/12948 6. http://research.microsoft.com/%7Esimonpj/haskell/haskell-email-11Sep1990-27O... 7. http://www.haskell.org//pipermail/haskell/ * haskell.org. John Peterson is [8]seeking comments on the haskell.org move to MediaWiki. Currently only the [9]front page is finished, and its time for comments. In the end this will allow anyone to come in and fix up the main haskell.org pages - the people, the projects, the help for beginners, all of it. One job that will be needed is to move the current hawiki contents onto MediaWiki. Feel free to start adding stuff to the new haskellwiki. 8. http://article.gmane.org/gmane.comp.lang.haskell.general/12981 9. http://haskell.org/haskellwiki/Haskell Discussion * Language Shootout. [10]Discussion took place on on haskell-cafe to improve the performance of the Haskell entries. This process has greatly improved some entries. Haskell is now [11]the fastest entry for the concurrency benchmark, Chameneos. More can still be done. Some entries are being worked on [12]here. The problems are quite short, and fairly easy to solve, so fire up the profiler and hack! 10. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/10663 11. http://shootout.alioth.debian.org/benchmark.php?test=chameneos&lang=all 12. http://haskell.org/hawiki/ShootoutEntry * MonadZero. Cale Gibbard [13]opened a discussion about reinclusion of MonadZero, and removal of `fail' from the Monad class, citing the overuse of monadic typing to indicate the possibility of failure as one of the problems. Instead, MonadZero should be used for failure. [14]References were made to the discussions that took place on this issue during the Haskell 98 process. 13. http://thread.gmane.org/gmane.comp.lang.haskell.general/12930 14. http://www.cs.chalmers.se/~rjmh/Haskell/Messages/Decision.cgi?id=2 * History channel. On a similar theme, an expedition took place on #haskell into functions and classes from earlier implementations of Haskell that had disappeared by Haskell 98. Of particular interest was the Eval class, and various things in the [15]constructor class prelude from Gofer, such as: class (Functor f, Functor g) => NatTransf f g where eta :: f a -> g a and fun definitions like: undefined :: a undefined | False = undefined 15. http://www.cse.unsw.edu.au/~dons/cc.prelude Darcs Corner A darcs gui. Eric Kow [16]proposed resurrecting the darcs wxhaskell gui for a new darcs gui. 16. http://thread.gmane.org/gmane.comp.version-control.darcs.user/9189 Quote of the Week * autrijus stares at type Eval x = forall r. ContT r (ReaderT x IO) (ReaderT x IO x) and feels very lost <shapr> Didn't you write that code? <autrijus> yeah. and it works <autrijus> I just don't know what it means. Contributing to HWN You can help us create new editions of this newsletter. Please see the [17]contributing information, send stories to dons -at- cse.unsw.edu.au. The Darcs repository is available at darcs get http://www.cse.unsw.edu.au/~dons/code/hwn 17. http://sequence.complete.org/hwn-contrib