[Haskell] Haskell Weekly News: February 20, 2006
Donald Bruce Stewart
dons at cse.unsw.edu.au
Sun Feb 19 23:11:56 EST 2006
Haskell Weekly News: February 20, 2006
Greetings, and thanks for reading issue 25 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to the Haskell mailing list and to The
Haskell Sequence. RSS is also available.
* The Haskell Workshop. Andres Loeh released the initial call for
papers for the ACM SIGPLAN 2006 Haskell Workshop, to be held at
Portland, Oregon on the 17 September, 2006.
The purpose of the Haskell Workshop is to discuss experience
with Haskell, and possible future developments for the language.
The scope of the workshop includes all aspects of the design,
semantics, theory, application, implementation, and teaching of
* Probability Distributions. Matthias Fischmann released a module
for sampling arbitrary probability distribution, so far including
normal (gaussian) and uniform distributions.
* Constructor Classes. Sean Seefried announced an
implementation of a tool to help explore constructor classes
(type classes which can take constructors as arguments) described
in Mark Jones' paper, A system of constructor classes:
overloading and implicit higher-order polymorphism. The
implementation not only infers the type but also prints out a
trace of the derivation tree for the syntax directed rules.
This section covers activity on Haskell' this week.
* Status Report. Isaac Jones released a Haskell' status report.
There is a list of proposals and a "strawman" categorization of
them on the wiki. The timeline is also on the wiki. You'll
notice that it's very aggressive; we plan to announce something at
the next Haskell Workshop in September. So, check out the wiki and
get on the haskell-prime mailing list!
* More on strictness
* FFI Pragmas
* Pattern synonyms
* The MPTC Dilemma
* Labels and the MPTC Dilemma
* The way forward
* Export lists
* First class labels
* Standardising the compiler interface
* An existential quantifier
* Commerical Use of Haskell. Seth Kurtzberg mentioned on the
#haskell irc channel that he was in the process of deploying a
commercial application written in Haskell onto a production line
in Taiwan. The particular application stress tests hardware
performance and stability.
"Once the compiler finally does what I think I'm telling it, the
programs almost always work the first time, which is really
amazing. With any substantial effort in C or C++, you are going to
have hidden problems traceable to type errors.
Recently, the thing that I was most pleased with was how quickly I
was able to refactor the hardware stress testing code into network
performance testing code."
* RFC: Class-based collections. Jean-Philippe Bernardy released
an rfc for his initial work on a class-based collections
framework. The main goal is to have something usable right now,
making use of generally available haskell extensions for maximum
usability/portability ratio (or rather product).
* darcs 1.0.6. Tommy Pettersson announced that the initial
release candidate for Darcs 1.0.6 is available. It contains
important bug fixes, some noticeable changes, and, of course, new
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