Haskell Weekly News: Julyl 18, 2009
Welcome to issue 126 of HWN, a newsletter covering developments in the Haskell community.
GHC 6.10.4. Ian Lynagh announced a new patchlevel release of GHC, 6.10.4. This version has very few changes over 6.10.3, but fixes some bugs that could be critical for a few users. See the release notes for details.
shelltestrunner 0.6 released. Simon Michael announced the first release of shelltestrunner, a small tool for testing any command-line program by running it through "shell" tests defined with a simple file format.
GLURaw 18.104.22.168. Sven Panne announced a new GLURaw package, containing full support for all GLU functionality and similar in spirit to the OpenGLRaw package: it is a 1:1 mapping of the C interface, no libraries or headers are needed at build time, and the GLU API entries are resolved dynamically at runtime.
ObjectName 22.214.171.124. Sven Panne announced a (tiny) new package, ObjectName, which contains a class corresponding to the general notion of explicitly handled identifiers for API objects, e.g. a texture object name in OpenGL or a buffer object name in OpenAL.
StateVar 126.96.36.199. Sven Panne announced the StateVar package, which further modularizes the OpenGL/OpenAL packages. It implements state variables, which are references in the IO monad, like IORefs or parts of the OpenGL state.
data-ordlist-0.0.1 and NumberSieves-0.0. Leon Smith announced the release of two new packages: Data.OrdList offers a convenient way for efficiently dealing with lists that you happen to know are ordered, and includes operations such as union, merge, exclusive union, intersection, and difference. NumberSieves includes the Sieve of O'Neill, from "The Geniune Sieve of Eratosthenes" by Melissa O'Neill, which offers an incremental primality sieve based on priority queues. Also included are two array-based generalizations of the Sieve of Eratosthenes: one for factoring a large quantity of small numbers, and another for calculating the phi function for a large quantity of small numbers.
graphviz-29188.8.131.52. Ivan Lazar Miljenovic announced a new release of the graphviz package for Haskell, which provides bindings to the GraphViz suite of tools. The biggest and most important change in this release is that all 152 attributes utilised/supported by GraphViz are now specified and supported.
darcs 2.3 beta 4. Petr Rockai announced another darcs 2.3 beta release, which features better Windows support. If you're on Windows, you should be able to install it with 'cabal install darcs-beta' -- give it a try!
Google Summer of Code
Progress updates from participants in the 2008 Google Summer of Code.
space profiling. Gergely Patai has been working on a heap profile manager.
fast darcs. Petr Rockai put out another another darcs 2.3 beta release, and made a bunch of other progress including getting darcs up and running on win32, working on hashed-storage, and optimizing 'darcs show contents'.
is closing a class this easy? Conor McBride asked for feedback on some code intended to effectively create a closed type class.
laziness blowup exercise. Thomas Hartman challenged readers to squash a memory leak.
Blog noiseHaskell news from the blogosphere. Blog posts from people new to the Haskell community are marked with >>>, be sure to welcome them!
Gergely Patai: Introducing the heap profile manager.
FP Lunch: Folding Statistics.
Petr Rockai: soc progress 8.
Greg Bacon: Monadic takeWhile.
Petr Rockai: darcs 2.3 beta 4.
David Amos: Counting symmetries using transversals.
Magnus Therning: XML prettifier in Haskell.
Petr Rockai: soc progress 7.
Quotes of the Week
- Berengal: For me, understanding the basics/reasoning behind haskell's type system was just a minute meditating on the phrase "what's the square root of hello?"
- bitwize: The oleg is to functional studliness as the farad is to capacitance: a hopelessly large base unit.
- maartenm: euclidate: to promote a conjecture to an axiom just for the sake of simplicity
- RobertGreaye: Some suggest the original English remained in Britain when the North American colonies were founded; others claim it was brought to the Americas by the British settlers, leaving a pale imitation back in Britain. The truth is much stranger: the original English was actually smuggled out of Britain to the West Indies in a wardrobe belonging to General Sir Ralph Abercromby, where it ended up on the island of Trinidad after Sir Ralph took possession of that territory in the name of the British Crown.
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