[Haskell] Haskell Weekly News: October 31, 2006
Donald Bruce Stewart
dons at cse.unsw.edu.au
Mon Oct 30 21:08:55 EST 2006
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Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 47 - October 31, 2006
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Welcome to issue 47 of HWN, a weekly newsletter covering developments
in the Haskell community.
This week we see a number of community documentation and maintenance
efforts, and the appearance of indexed data types in GHC
Announcements
* Associated data types in GHC. Manuel Chakravarty [1]announced the
availability of indexed data types, an extension of our earlier
proposal for [2]associated data types, in GHC's development
version. Detailed information on where to get the right GHC and
how to use indexed types is available from [3]the Haskell wiki.
1. http://article.gmane.org/gmane.comp.lang.haskell.general/14447
2. http://www.cse.unsw.edu.au/~chak/papers/CKPM05.html
3. http://haskell.org/haskellwiki/GHC/Indexed_types
* Yhc Bytecode library 0.3. Robert Dockins [4]announced the release
of the [5]Yhc Bytecode library, version 0.3.
4. http://article.gmane.org/gmane.comp.lang.haskell.general/14434
5. http://www.eecs.tufts.edu/~rdocki01/yhc-bytecode.html
* Haskell Program Coverage. Andy Gill [6]checked the latest version
of HPC, with GHC support, into the head GHC branch
6. http://www.galois.com/~andy/ray/hpc.html
* Haskell Mersenne Twister. Lennart Augustsson [7]made available his
Haskell implementation of the Mersenne Twister random number
generator.
7. http://www.augustsson.net/Darcs/MT/
* Haskell-specific Google Search Engine. Don Stewart [8]initialised
a Haskell-specific search engine, as part of Google's coop engine
system, which seems to do a good job of targeting just Haskell
sites, in particular, mailing list items
8. http://www.google.com/coop/cse?cx=015832023690232952875%3Acunmubfghzq
* A process for submitting library extensions. The libraries hackers
[9]have developed [10]a document describing how to best go about
contributing new code to the core Haskell libraries. On a similar
note, the GHC team has prepared [11]a page on best practice for
GHC submissions.
9. http://article.gmane.org/gmane.comp.lang.haskell.libraries/5368
10. http://haskell.org/haskellwiki/Library_submissions
11. http://hackage.haskell.org/trac/ghc/wiki/WorkingConventions
* How to create a Haskell project. Don Stewart and Ian Lynagh
[12]prepared some guidelines on starting your own Haskell project.
12. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/16164/focus=16164
Haskell'
This section covers the [13]Haskell' standardisation process.
* [14]Lambda-match vs PMC
* [15]Indentation of If-Then-Else
* [16]Digit groups
13. http://hackage.haskell.org/trac/haskell-prime
14. http://thread.gmane.org/gmane.comp.lang.haskell.prime/1815/focus=1815
15. http://thread.gmane.org/gmane.comp.lang.haskell.prime/1791/focus=1791
16. http://thread.gmane.org/gmane.comp.lang.haskell.prime/1763/focus=1781
Discussion
* Haskell Quiz/Ruby Quiz. Haskell Hackers [17]have started recording
Ruby Quiz solutions on the Haskell wiki. Lots of fun puzzles are
available, and its a useful resource if you're learning the
language.
17. http://haskell.org/haskellwiki/Haskell_Quiz
* Infinite, open, statically constrained HLists. Oleg Kiselyov
[18]described heterogeneous sequences that admit infinite
sequences and permits post-hoc addition of new elements, even to
an already infinite sequence.
18. http://article.gmane.org/gmane.comp.lang.haskell.general/14424
* Lexically scoped type variables: new proposal. Ben Rudiak-Gould
[19]made a new for scoped type variables.
19. http://article.gmane.org/gmane.comp.lang.haskell.general/14429
* Simple GADT parser for the eval example. Greg Buchholz [20]sought
advice on creating evaluators with GADTs
20. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/16178/focus=16178
* Package mounting. Frederik Eaton [21]proposed an alternative
[22]design for package mounting extensions to the package system.
21. http://article.gmane.org/gmane.comp.lang.haskell.libraries/5389
22. http://hackage.haskell.org/trac/ghc/wiki/PackageMounting
* Function types as instances of Num. Greg Buchholz [23]had an
interesting problem using functions as instances of Num
23. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/16129/focus=16129
* Yhc Core file generation. Neil Mitchell [24]suggested that it was
time to start taking YHC Core output a bit more seriously, and
made some proposals.
24. http://thread.gmane.org/gmane.comp.lang.haskell.yhc/397/focus=397
* Parallelism in GHC 6.6 and seq vs. pseq. Simon Marlow [25]noticed
that Control.Parallel exports seq when in fact it should probably
export pseq.
25. http://article.gmane.org/gmane.comp.lang.haskell.glasgow.user/11093
Jobs
* Lectureships in Software Engineering. Jeremy Gibbons [26]announced
that applications are invited for three new University
Lectureships in Software Engineering, at the University of Oxford.
For further information, including full details of the application
procedure and selection criteria, see [27]here.
26. http://article.gmane.org/gmane.comp.lang.haskell.general/14445
27. http://www.softeng.ox.ac.uk/jobs/
Blog noise
[28]Haskell news from the blogosphere.
* [29]Developing Gnome Apps with Glade
* [30]The Fun of Functional Infrastructure
* [31]Lightweight Threads
* [32]Fold diagrams
* [33]Haskell and Scheme: Which One and Why?
* [34]Scheme Death Knell?
* [35]Software Cipher
* [36]Algebraic Topology in Haskell
* [37]Syntax extension for Monads in Ocaml
* [38]The wxhaskell revival
* [39]Query Composition using Functional Programming Techniques in C# 3.0
* [40]Practical Haskell?
* [41]FP publisher interview
* [42]Haskell mentions at the Dynamic Languages Symposium
* [43]Phil Wadler (aka Lambda Man) at OOPSLA
* [44]Haskell programming
* [45]RushCheck, a lightweight random testing tool for Ruby similar to QuickCheck
28. http://planet.haskell.org/
29. http://j-van-thiel.speedlinq.nl/EddyAhmed/GladeGtk2Hs.html
30. http://blog.syntaxpolice.org/isaac/index.cgi/technology/onInfrastructure.html
31. http://lambda-the-ultimate.org/node/1721#comment-21046
32. http://cale.yi.org/index.php/Fold_Diagrams
33. http://scienceblogs.com/goodmath/2006/10/haskell_and_scheme_which_one_a.php
34. http://theonlywinningmove.blogspot.com/2006/10/scheme-death-knell.html
35. http://mult.ifario.us/articles/2006/10/25/solitaire-cipher-in-haskell
36. http://sigfpe.blogspot.com/2006/08/algebraic-topology-in-haskell.html
37. http://www.cas.mcmaster.ca/~carette/pa_monad/
38. http://koweycode.blogspot.com/2006/10/wxhaskell-on-darcshaskellorg.html
39. http://blogs.msdn.com/ericwhite/pages/FP-Tutorial.aspx
40. http://lambda-the-ultimate.org/node/1803#comment-21779
41. http://on-ruby.blogspot.com/2006/10/author-interview-joshua-smith-prequel.html
42. http://mark.santaniello.net/archives/272
43. http://www.cs.uni.edu/~wallingf/blog/archives/monthly/2006-10.html#e2006-10-28T19_36_31.htm
44. http://ste.aeschbacher.ch/blog/2006/04/entry1
45. http://rushcheck.rubyforge.org/
Quotes of the Week
* Simon Marlow: In fact, you don't need an evil scheduler, an
ordinary scheduler will do this.
* Conor McBride: My operating hypothesis is that even ordinary
schedulers are evil...
* Larry Wall: Continuations - if you know what they are - I don't
need to explain them. If you don't know what they are - you don't
want to know.
* Cale: [discussing names for Haskell, after suggesting Sapphire]
Diamond: The Hardest Programming Language on Earth
* ConorMcBride: So, taking Void to be the colour of the empty
bikeshed ...
* cjeris: I like how you conveniently gloss over the part where your
head explodes.
* dons: C++: Creating blub programmers since 1985
* mwc: I can only believe that Java is a conspiracy perpetrated by
keyboard manufacturers
* Pseudonym: (:[]) looks like a ninja robot pirate monkey
* chessguy: We've got satan and beelsebob in here, and talking about
unicycling.... this channel is guaranteed to be a bad influence on
me now
* dons: fold (\water dish -> wash water dish) soapywater dishes
* masklinn: Scheme, on the other hand, is dynamically compiled and
thus doesn't 'fail early', it fails as late as it can, which
produces weird error unless you're into testing. Beginners never
are into testing.
* Riastradh: Assume that I haven't the faintest idea of what a
comonad is, beyond that if a monad goes `voob', then a comonad
goes `boov'
* Anonymous: It is quite possible that 'the ultimate teaching
language' was not actually invented when Steele and Sussman came
down from the mountain bearing a spool of 9-track magtape...
* sigfpe: How can Haskell not be the programming language that all
mathematicians should learn?
* Syzygy: > let _'__'_'''_'__'_=2 in _'__'_'''_'__'_
* ihope>: > let _' __ ___ (____:_____) = __ ____ (_' __ ___ _____);
_' _ __ [] = __ in _' (+) 0
* Syzygy: one thing that stands out is the relatively low distance
between thought expressed in my ordinary day-to-day mathematical
discourse, and thought expressed in Haskell code
Code Watch
* Tue Oct 24 14:29:07 PDT 2006. Andy Gill. Haskell Program Coverage.
This large checkin is the new ghc version of Haskell Program
Coverage, an expression-level coverage tool for Haskell. You can
run the coverage tool with -fhpc at compile time. Main must be
compiled with -fhpc.
* Tue Oct 24 02:13:57 PDT 2006. Simon Marlow. Split GC.c, and move
storage manager into sm/ directory. In preparation for parallel
GC, split up the monolithic GC.c file into smaller part
About the Haskell Weekly News
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