[Haskell-cafe] Haskell Weekly News: Issue 90 - October 25, 2008
byorgey at seas.upenn.edu
Sat Oct 25 18:28:22 EDT 2008
Haskell Weekly News
Issue 90 - October 25, 2008
Welcome to issue 90 of HWN, a newsletter covering developments in the
One day a Haskell n00b asked the master coder, "Master, does (const 3
undefined) have the terminating nature, or not?" The master replied,
"Of course." Cried the n00b, "But that changes everything! Why did you
not tell me this before?" "You never asked." Immediately, the n00b was
Darcs hacking sprint. Eric Kow announced that the darcs hacking
sprint is taking place this weekend!
Lambdabot 4.2.2. Gwern Branwen announced the release of version
4.2.2 of lambdabot, the famous Haskell IRC bot. The new release has
innumerable new features and bugfixes, trained suckling pigs, mermaids,
Autoproc Change of Maintainer (if you use procmail you should read
this). Jason Dagit announced that Gwern Branwen will be taking over
the autoproc project. Autoproc makes it quick and easy for Haskell
programmers to make procmail recipes by using an embedded domain
specific language. Once your recipes type check and compile, you simply
run autoproc and it generates the corresponding procmail recipe.
External Sort: Sort a 10-million integer file with just 256M of ram..
Thomas Hartman announced the external-sort package. It implements an
on-disk external sort algorithm in Haskell, which you can use to sort
lists that will not fit in memory.
IEEE-utils. Sterling Clover announced the IEEE-utils package,
providing a number of bindings for anyone interested in doing hardcore
rewriting-0.1. Thomas van Noort announced the release of
rewriting, a generic rewriting library for regular datatypes.
Features include generic rewriting machinery, generic traversals, and
rewrite rules defined as values instead of functions.
REMINDER: Haskell Communities and Activities Report. Janis Voigtlaender
reminded everyone that the deadline for the November 2008 edition
of the Haskell Communities and Activities Report (Friday, October 31)
is approaching fast! If you haven't already, please write an entry for
your new project, or update your old entry. For more information, see
the original call for contributions.
lhs2tex-1.14. Andres Loeh announced the release of lhs2TeX
version 1.14, a a preprocessor to generate LaTeX code from literate
colour 0.0.0. roconnor announced an initial release of the
colour package. It is hoped that this library will become the
standard colour library for Haskell.
Hackage Improvement Ideas. Jason Dagit suggested some improvements
to Hackage and asked for others to contribute their ideas as well.
Spine-lazy "multiqueue". Luke Palmer asked for help implementing an
efficient spine-lazy multiqueue.
Functional programming job opening. Simon Peyton-Jones announced a
job opening in functional programming at Microsoft. They are
looking for "an experienced software development engineer who has
mastered C/C++ and/or C# development and is now learning or is already
an expert using F# (or Haskell)."
Haskell news from the blogosphere.
* Eric Kow (kowey): darcs hacking sprints - some pictures from
* Jason Dagit: Understanding Darcs Commute.
* Ketil Malde: Optimization again: befuddled by bytestrings.
* Creighton Hogg: Revisiting old concepts.
* Tupil: On unit testing and type checking.
* Eric Kow (kowey): darcs weekly news #9.
* >>> Alberto Corona: Axioms and properties for haskell classes.
Alberto demonstrates some code for adding checkable algebraic
properties to type classes.
* Creighton Hogg: A serious problem. Creighton with some straight
talk about typeclass abuse.
* London Haskell Users Group: Next meeting: Duncan Coutts on the
* Manuel M T Chakravarty: Keep those cores busy!. A comprehensive
account of the full vectorisation transformation underlying the
implementation of nested data parallelism in GHC.
* Conal Elliott: Simpler, more efficient, functional linear maps.
* Conal Elliott: Vector space bases via type families.
* >>> Sebastian Fischer: Constrained Monadic Computations.
* Luke Palmer: I know what I'm going to get for christmas. "I
believe I have found a truly marvelous implementation of FRP which
this blog post is too short to contain."
* >>> codeflow: On Haskell and C++.
* >>> Simon Dobson: Why Haskell will take over the world. Simon
has some thoughts on functional programming and the future of
* >>> Falko: Learning Haskell's Basics - Problems from Project
Quotes of the Week
* vixey: debugging code is admitting defeat
* kaomoji: [on #haskell] man, you guys are really nerdy
* sclv: I guess I'd believe the universe was lazy if the hubble
looked at that stuff way at the edge of the big bang diaspora and
when we magnified the picture we saw "stack overflow"
* rwbarton: relational calculus? "DIFFERENTIATE TABLE users WITH
RESPECT TO name"
* heatsink: ban :: (BanContext no, UserIdentifer u) => u -> no u
* rwbarton: I tried typechecking the value of unwords (replicate 125
"fmap") in ghci once, and it consumed all my memory
* ghc: Step 3: Zonk the kinds
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