--------------------------------------------------------------------------- Haskell Weekly News http://sequence.complete.org/hwn/20100228 Issue 151 - February 28, 2010 --------------------------------------------------------------------------- Welcome to issue 151 of HWN, a newsletter covering developments in the [1]Haskell community. A light HWN this week, some interesting discussion about view patterns and free monads. Also announced this week was [2]TryHaskell a work-in-progress online interactive haskell interpreter and tutorial. The author (based on his reddit post) has asked us not to post this to proggit yet, but I don't think he'll mind a plug here. So after you're done reading, give it a try! Until next week, haskellers, your Haskell Weekly News. Announcements wxHaskell for ghc-6.12.1. Daniel Fischer [3]announced a new release of wxHaskell. concurrent-extra-0.2. Roel van Dijk [4]announced a new release of concurrent-extra jhc-0.7.3. John Meacham [5]announced a new version of jhc, including many bug fixes. Try Haskell! An interactive tutorial in your browser. Benjamin L. Russell [6]told us about the TryHaskell Project, available at [7]TryHaskell.org. TryHaskell is an interactive, online Haskell interpreter and tutorial. MSFP: Call for Papers. Venanzio Capretta [8]announced a call for papers for the Third Workshop on Mathematically Structured Functional Programming. HLedger 0.8. Simon Michael [9]announced a new version of hledger last week, but it slipped through my radar. This release includes bug fixes, some refactoring, and High-Res Graphical Chart generation capability. Discussion View patterns. Andrew Coppin [10]asked about making view patterns polymorphic. What are 'free' Monads? Guenther Schmidt [11]asked what exactly it meant to be a 'free monad' Multiple Interpretations for a monad? Guenther Schmidt [12]asked about monads which can have multiple levels of meaning and interpretation. Blog noise [13]Haskell news from the [14]blogosphere. Blog posts from people new to the Haskell community are marked with >>>, be sure to welcome them! * Joachim Breitner: [15]Exploiting sharing in arbtt. * Martijn van Steenbergen: [16]Colors in GHCi. * Don Stewart (dons): [17]Evaluation strategies and synchronization: things to watch for. * Don Stewart (dons): [18]Fusion makes functional programming fun!. * Michael Snoyman: [19]Simpler is Better. * Kevin Reid (kpreid): [20]Hvm.hs: an exercise in Haskell golf. * Bryn Keller: [21]Why Isn't Cabal Installed with GHC?. * Don Stewart (dons): [22]Modern Benchmarking in Haskell. Quotes of the Week * roconnor: sounds like you need a zygohistomorphic prepromorphism * copumpkin: These are not the monads you are looking for. * noggle: this language is like having programming super powers About the Haskell Weekly News New editions are posted to [23]the Haskell mailing list as well as to [24]the Haskell Sequence and [25]Planet Haskell. [26]RSS is also available, and headlines appear on [27]haskell.org. To help create new editions of this newsletter, please see the information on [28]how to contribute. Send stories to jfredett . at . gmail . dot . com. The darcs repository is available at darcs get [29]http://patch-tag.com/r/jfredett/HWN2/pullrepo HWN2 . References 1. http://haskell.org/ 2. http://tryhaskell.org/ 3. http://article.gmane.org/gmane.comp.lang.haskell.cafe/70857 4. http://article.gmane.org/gmane.comp.lang.haskell.cafe/70689 5. http://article.gmane.org/gmane.comp.lang.haskell.cafe/70961 6. http://article.gmane.org/gmane.comp.lang.haskell.general/17819 7. http://tryhaskell.org/ 8. http://article.gmane.org/gmane.comp.lang.haskell.general/17818 9. http://www.haskell.org/pipermail/haskell-cafe/2010-February/073185.html 10. http://article.gmane.org/gmane.comp.lang.haskell.cafe/70895 11. http://article.gmane.org/gmane.comp.lang.haskell.cafe/70874 12. http://article.gmane.org/gmane.comp.lang.haskell.cafe/70800 13. http://planet.haskell.org/ 14. http://haskell.org/haskellwiki/Blog_articles 15. https://www.joachim-breitner.de/blog/archives/381-Exploiting-sharing-in-arbt... 16. http://martijn.van.steenbergen.nl/journal/2010/02/27/colors-in-ghci/ 17. http://donsbot.wordpress.com/2010/02/26/evaluation-strategies-and-synchroniz... 18. http://donsbot.wordpress.com/2010/02/26/fusion-makes-functional-programming-... 19. http://snoyberg.wordpress.com/2010/02/26/simpler-is-better/ 20. http://kpreid.livejournal.com/23060.html 21. http://www.xoltar.org/?p=33 22. http://donsbot.wordpress.com/2010/02/23/modern-benchmarking-in-haskell/ 23. http://www.haskell.org/mailman/listinfo/haskell 24. http://sequence.complete.org/ 25. http://planet.haskell.org/ 26. http://sequence.complete.org/node/feed 27. http://haskell.org/ 28. http://haskell.org/haskellwiki/HWN 29. http://patch-tag.com/r/jfredett/HWN2/pullrepo%20HWN2