[Haskell-cafe] Haskell Weekly News: Issue 126 - July 18, 2009
byorgey at seas.upenn.edu
Sat Jul 18 11:23:29 EDT 2009
Haskell Weekly News
Issue 126 - July 18, 2009
Welcome to issue 126 of HWN, a newsletter covering developments in the
Hac phi is next weekend! With almost 30 people already registered,
it looks like we're going to have a fantastic time hacking in
Philadelphia. It's still not too late to register!
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
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.
generator 0.5.1. Yair Chuchem announced the release of the
generator package, which implements an alternative list monad
transformer, a list class, and related functions.
GLURaw 184.108.40.206. 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.
OpenGLRaw 220.127.116.11. Sven Panne announced a new version of the
OpenGLRaw package, which adds support for a number of OpenGL
ObjectName 18.104.22.168. 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 22.214.171.124. 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
graphviz-29126.96.36.199. 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.
uncommon IMO problem - toilet management. Henning Thielemann
announced a Haskell package for managing toilet use at the
International Mathematical Olympiad.
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
space profiling. Gergely Patai has been working on a heap profile
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.
Haskell 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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