[Haskell] Haskell Weekly News: March 05, 2007

Donald Bruce Stewart dons at cse.unsw.edu.au
Mon Mar 5 00:48:15 EST 2007


---------------------------------------------------------------------------
Haskell Weekly News
http://sequence.complete.org/hwn/20070305
Issue 58 - March 05, 2007
---------------------------------------------------------------------------

   Welcome to issue 58 of HWN, a weekly newsletter covering developments
   in the [1]Haskell community.

   1. http://haskell.org/

Announcements

   New Book - Programming in Haskell. Graham Hutton [2]announced a new
   Haskell textbook: [3]Programming in Haskell. This introduction is
   ideal for beginner programmers: it requires no previous programming
   experience and all concepts are explained from first principles via
   carefully chosen examples. Each chapter includes exercises that range
   from the straightforward to extended projects, plus suggestions for
   further reading on more advanced topics. The presentation is clear and
   simple, and benefits from having been refined and class-tested over
   several years.

   2. http://article.gmane.org/gmane.comp.lang.haskell.general/14849
   3. http://www.cs.nott.ac.uk/~gmh/book.html

   Gtk2Hs version 0.9.11. Duncan Coutts [4]announced Gtk2Hs - a GUI
   Library for Haskell based on Gtk+, version 0.9.11, is [5]now
   available. Gtk2Hs features: automatic memory management; Unicode
   support; nearly full coverage of Gtk+ 2.8 API; support for several
   additional Gtk+/Gnome modules (Glade visual GUI builder, cairo vector
   graphics, SVG rendering, OpenGL extension and more).

   4. http://article.gmane.org/gmane.comp.lang.haskell.general/14934
   5. http://haskell.org/gtk2hs/download/

   cabal-make version 0.1. Conal Elliott [6]announced Cabal-make, a GNU
   make include file to be used with Cabal in creating and sharing
   Haskell packages. A few highlights: web-based, cross-package links in
   Haddock docs; syntax coloring via hscolour, with per-project CSS;
   links from the Haddock docs to hscolour'd code and to wiki-based user
   comment pages. [7]It is available here.

   6. http://article.gmane.org/gmane.comp.lang.haskell.general/14891
   7. http://haskell.org/haskellwiki/Cabal-make

   Vty 3.0.0. Stefan O'Rear [8]announced a new major of [9]vty, featuring
   improved performance. vty is notably used in yi to provide a terminal
   interface supporting syntax highlighting.

   8. http://article.gmane.org/gmane.comp.lang.haskell.general/14876
   9. http://members.cox.net/stefanor/vty/dist/doc/html/index.html

   Haskell Xcode Plugin. Lyndon Tremblay [10]announced the first release
   of [11]a plugin for Xcode enabling Haskell syntax highlighting, Xcode
   projects compiling and linking, and a couple missing features, for
   Haskell (GHC).

  10. http://article.gmane.org/gmane.comp.lang.haskell.general/14875
  11. http://www.hoovy.org/HaskellXcodePlugin/

   urlcheck 0.1: parallel link checker. Don Stewart [12]announced the
   first release of [13]urlcheck, an parallel link checker, written in
   Haskell. Frustrated with the resources and time consumed by
   'linkchecker', urlcheck is a lightweight, smp-capable replacement in
   Haskell. urlcheck pings urls found in the input file, checking they
   aren't 404s. It uses Haskell threads to run queries concurrently, and
   can transparently utilise multiple cores if you have them.

  12. http://article.gmane.org/gmane.comp.lang.haskell.general/14863
  13. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/urlcheck-0.1

   The Monad.Reader: call for copy. Wouter Swierstra [14]welcomed
   articles for the next issue of The Monad.Reader. Submit articles for
   the next issue by e-mail before April 13th, 2007. Articles should be
   written according to the guidelines available from [15]The Monad
   Reader home.
   
  14. http://article.gmane.org/gmane.comp.lang.haskell.general/14870
  15. http://www.haskell.org/haskellwiki/TheMonadReader

   TV-0.2 and GuiTV-0.2. Conal Elliott [16]announced TV, a library for
   composing tangible values ('TVs'), values that carry along external
   interfaces. In particular, TVs can be composed to create new TVs, and
   they can be directly executed with various kinds of interfaces. Values
   and interfaces are combined for direct use, and separable for
   composition. GuiTV adds graphical user interfaces to the TV (tangible
   value) framework, using Phooey. The functionality was part of TV up to
   version 0.1.1, and is now moved out to a new package to eliminate the
   dependency of core TV on Phooey and hence on wxHaskell, as the latter
   can be difficult to install.

  16. http://article.gmane.org/gmane.comp.lang.haskell.general/14862

   Haskell-mode 2.2. Stefan Monnier [17]released version 2.2 of [18]the
   Haskell-mode package for Emacs. It has very few visible changes,
   mostly some commands to query an underlying interactive hugs/ghci in
   order to get type/info about specific identifiers.

  17. http://article.gmane.org/gmane.comp.lang.haskell.general/14857
  18. http://www.iro.umontreal.ca/~monnier/elisp/

   Data.CompactString 0.1. Twan van Laarhoven [19]announced a beta
   [20]Unicode version of Data.ByteString. The library uses a variable
   length encoding (1 to 3 bytes) of Chars into Word8s, which are then
   stored in a ByteString.

  19. http://thread.gmane.org/gmane.comp.lang.haskell.general/14834
  20. http://twan.home.fmf.nl/compact-string/

   HSXML version 1.13. Oleg Kiselyov [21]announced version 1.13 of
   [22]HSXML. HSXML is a library for writing and transforming typed
   semi-structured data in Haskell -- in S-expression syntax, with the
   extensible set of `tags', and statically enforced content model
   restrictions. A particular application is writing web pages in
   Haskell. We obtain HTML, XHTML or other output formats by running the
   Haskell web page in an appropriate rendering monad. The benefit of
   representing XML-like documents as a typed data structure/Haskell code
   is static rejection of bad documents -- not only those with undeclared
   tags but also those where elements appear in wrong contexts.

  21. http://thread.gmane.org/gmane.comp.lang.haskell.general/14835
  22. http://pobox.com/~oleg/ftp/Scheme/xml.html#typed-SXML

   Haskell XML Toolbox 7.1. Uwe Schmidt [23]announced a new version of
   [24]the Haskell XML Toolbox. The main change is the step from cvs to
   darcs. The documentation has source links into [25]the darcs
   repository. [26]A tutorial is available in the Haskell wiki.

  23. http://article.gmane.org/gmane.comp.lang.haskell.general/14831
  24. http://www.fh-wedel.de/~si/HXmlToolbox/index.html
  25. http://darcs.fh-wedel.de/hxt
  26. http://www.haskell.org/haskellwiki/HXT

   OmegaGB, Haskell Game Boy Emulator. Bit Connor [27]announced OmegaGB,
   an emulator for the Nintendo Game Boy, written in pure Haskell. It
   uses gtk2hs for the user interface, but there is also a version that
   doesn't require gtk2hs and uses ascii art. You can find more
   information about the program at [28]the website.

  27. http://article.gmane.org/gmane.comp.lang.haskell.general/14938
  28. http://www.mutantlemon.com/omegagb/

   Takusen 0.6. Oleg and Alistair [29]announced a new release of
   [30]Takusen, the database library for Haskell. There are a large
   number of changes and bug-fixes in this release, including improved
   Oracle and PostgreSQL support.

  29. http://article.gmane.org/gmane.comp.lang.haskell.libraries/6209/
  30. http://darcs.haskell.org/takusen

   hoogle.el. David House [31]announced Hoogle.el, a simple Emacs Lisp
   library that nicely integrates [32]Hoogle into Emacs.

  31. http://article.gmane.org/gmane.comp.lang.haskell.general/14944
  32. http://haskell.org/haskellwiki/Hoogle.el

   Buggy nofib. Josep Silva Galiana [33]announced a 'buggy' version of
   the nofib collection of Haskell programs. [34]All programs contain one
   of these bugs: a bug that produces an incorrect result; a bug that
   produces non-termination; a bug that produces an exception (e.g., div
   by zero). [35]The buggy nofib suite can be used to test debugging
   tools.

  33. http://article.gmane.org/gmane.comp.lang.haskell.general/14825
  34. http://einstein.dsic.upv.es/darcs/nofib
  35. http://einstein.dsic.upv.es/nofib

   nobench: Haskell implementation shootout. Don Stewart [36]announced
   nobench, a cross-implementation performance benchmark suite, based on
   nofib, [37]comparing the performance of various Haskell compilers and
   bytecode interpreters on a range of programs.

  36. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/19684
  37. http://www.cse.unsw.edu.au/~dons/nobench.html

   Derangement version 0.1.0. Dennis Griffith [38]announced the initial
   version of derangement, a library for finding a derangement of a set.
   A derangement of a set is a permutation with no fixed points, like
   many constrained matching problems it is susceptible to solution via a
   Max-flow algorithm.

  38. http://article.gmane.org/gmane.comp.lang.haskell.cafe/19714

   HSH 1.0.0. John Goerzen [39]announced the first release of HSH. HSH is
   designed to let you mix and match shell expressions with Haskell
   programs. With HSH, it is possible to easily run shell commands,
   capture their output or provide their input, and pipe them to/from
   other shell commands and arbitrary Haskell functions at will. HSH
   makes it easy to run shell commands. But its real power is in piping.
   You can pipe -- arbitrarily -- between external programs, pure Haskell
   functions, and Haskell IO functions

  39. http://article.gmane.org/gmane.comp.lang.haskell.cafe/20053

   A new Haskell cookbook. Martin Bishop [40]began a preliminary page,
   and fleshed out some of the headers/sub-headers on the wiki page for a
   good Haskell Cookbook (not a PLEAC clone). [41]Please contribute.

  40. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/19790
  41. http://haskell.org/haskellwiki/Cookbook

Haskell'

   This section covers the [42]Haskell' standardisation process.

     * [43]Global variables
     * [44]Polymorphic components, so far
     * [45]do-and-if-then-else modification
     * [46]Fixity resolution, possible specification
     * [47]Disjunctive tuples

  42. http://hackage.haskell.org/trac/haskell-prime
  43. http://thread.gmane.org/gmane.comp.lang.haskell.prime/2054
  44. http://thread.gmane.org/gmane.comp.lang.haskell.prime/2076
  45. http://thread.gmane.org/gmane.comp.lang.haskell.prime/2120
  46. http://thread.gmane.org/gmane.comp.lang.haskell.prime/2121
  47. http://thread.gmane.org/gmane.comp.lang.haskell.prime/2133

Libraries

   This week's proposals and extensions to the [48]standard libraries.

     * [49]Data.Proxy
     * [50]Add extra readline completion functionality
     * [51]Control.Monad.Cont documentation
     * [52]Add First and Last wrappers around Maybe to Data.Monoid
     * [53]Add ioeGetLocation, ioeSetLocation to System/IO/Error.hs

  48. http://haskell.org/haskellwiki/Library_submissions
  49. http://thread.gmane.org/gmane.comp.lang.haskell.libraries/6238
  50. http://thread.gmane.org/gmane.comp.lang.haskell.libraries/6256
  51. http://thread.gmane.org/gmane.comp.lang.haskell.libraries/6287
  52. http://thread.gmane.org/gmane.comp.lang.haskell.libraries/6319
  53. http://thread.gmane.org/gmane.comp.lang.haskell.libraries/6320

Discussion

   Haskell with only one typeclass. Oleg Kiselyov [54]described how, if
   the ability to define typeclasses is removed from Haskell, no
   expressivity is lost. If Haskell had only one, pre-defined typeclass
   with only one method, we could still do normal Haskell programming
   with standard and user-defined overloaded numerical functions, monads,
   monad transformers, etc. Haskell with only one typeclass can express
   all of Haskell98 typeclass programming idioms including constructor
   classes, plus multi-parameter type classes and some functional
   dependencies.

  54. http://article.gmane.org/gmane.comp.lang.haskell.general/14936

   Data type declarations are implicitly moduled. Chris Moline
   [55]proposed an idea to allow multiple data declarations to share
   constructors by having them be implicitly declared inside a module.

  55. http://article.gmane.org/gmane.comp.lang.haskell.general/14847

   Importance of MonadRandom. Yitzchak Gale [56]pointed out the
   importance of Cale Gibbard's [57]MonadRandom. This monad makes it
   possible to write functions that use randomness without having to
   specify in advance whether the source of randomness will be a pure
   pseudorandom number generator, as in System.Random, or physical
   randomness via the IO monad, such as your operating system's source of
   physical randomness, or random.org, or a hardware random generator.

  56. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/19058
  57. http://www.haskell.org/haskellwiki/New_monads/MonadRandom

   Become a GHC build slave!. Simon Marlow [58]pointed out that, thanks
   largely to Ian Lynagh, GHC now has a BuildBot infrastructure to
   automate nightly builds on multiple platforms. This replaces the old
   set of shell scripts that we used to run nightly builds; now adding
   new clients to the setup is [59]relatively easy. So far we have
   various Windows builds running, and I'll be moving over the existing
   Linux nightly builds in due course.

  58. http://article.gmane.org/gmane.comp.lang.haskell.cafe/19103
  59. http://hackage.haskell.org/trac/ghc/wiki/BuildBot

   Editor support for low level hacking. Don Stewart [60]mentioned some
   tools used for making low level optimisation of GHC Haskell code
   easier

  60. http://article.gmane.org/gmane.comp.lang.haskell.cafe/19348

   Optimisation fun. Creighton Hogg [61]sparked a long thread on
   optimising prime sieves in Haskell

  61. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/19380

   OO Design in Haskell Example. Steve Downey [62]began a thread on OO
   design in Haskell

  62. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/19897

   Safe lists with GADTs. Neil Mitchell [63]explored a safe version of
   head and tail, on a safe version of lists, using GADTs

  63. http://thread.gmane.org/gmane.comp.lang.haskell.cafe/19901

Jobs

   Research position at Nokia Research Center. Jamey Hicks [64]announced
   the availability of a senior research engineer position at Nokia
   Research Center Cambridge, US. They are seeking an exceptional, highly
   motivated individual who is interested in a unique opportunity to
   collaborate with a world-class academic research community. This
   position is for the Armo project at NRC Cambridge, using Bluespec
   hardware description language to radically improve Nokia's ability to
   develop advanced SOCs and corresponding software for future mobile
   phones and mobile computers. We are investigating co-development of
   hardware and software components for such devices. Success in the
   project will lead to both academic publication as well as a
   significant positive impact on Nokia products and engineering.

  64. http://article.gmane.org/gmane.comp.lang.haskell.general/14901

   New PhD Positions Computing Science, Chalmers University. Koen
   Claessen [65]announced new [66]PhD positions for 2007, at Chalmers
   University of Technology. The focus is on algorithms, bioinformatics,
   distributed systems and computing, functional programming, formal
   methods, interaction design, language technology, language based
   security, parallel and high performance computing, programming logic
   and type theory, but research is not restricted to these topics.

  65. http://article.gmane.org/gmane.comp.lang.haskell.general/14900
  66. http://chalmersnyheter.chalmers.se/chalmers03/english/eng_vacanciesarticle.jsp?article=8730

   Positions at Oxford: refactoring tools. Oege.de.Moor [67]announced the
   availability of positions in the Programming Tools Group at Oxford,
   researching aspect refactoring tools

  67. http://article.gmane.org/gmane.comp.lang.haskell.general/14860

Blog noise

   [68]Haskell news from the blogosphere.

     * [69]Writing a Simple Search Engine in Haskell: Part 0 - Introduction
     * [70]Writing a Simple Search Engine in Haskell: Part 1 Maybe and List
     * [71]Haskell IO for Imperative Programmers
     * [72]Quotient Types for Information Hiding
     * [73]How Many Functions are There of Type Bool -> Bool?
     * [74]Macros for Haskell? Done.
     * [75]More on Haskell, Side Effects and Code Reuse
     * [76]The theory of monads
     * [77]Writing code by types
     * [78]Haskell: open secret in Ruby land
     * [79]Ruby vs Haskell: choose what works
     * [80]Real time Haskell
     * [81]Folds and functional programming
     * [82]Countable Ordinals in Haskell
     * [83]Haskell
     * [84]Programming and the Metaphorical Mind
     * [85]Languages and the semiskilled developer
     * [86]Building a Firewall Against Complexity
     * [87]The Killer App for a new language
     * [88]Time travel in Haskell
     * [89]Comonads and reading from the future
     * [90]Flirting with Functional Programming
     * [91]A fold-like procedure in C
     * [92]Monads in Qi
     * [93]Monads work because they have a tight interface
     * [94]What's wrong with for loops
     * [95]More on what's wrong with for loops
     * [96]Haskell, CAL and Scala
     * [97]Haskell: Queues without pointers
     * [98]Type Classes: Not Quite Overloading
     * [99]Generalised Algebraic Data Types, Phantom Types, and Dependent Types
     * [100]An IRC client/server in Haskell
     * [101]Language design: grand architecture versus feature collections
     * [102]Thoughts on one week in Haskell
     * [103]Why its hard for imperative programmers to learn Haskell
     * [104]Refunctoring with polymorphism
     * [105]Introductory console IO in Haskell
     * [106]Learn the lambda calculus
     * [107]Haskell for Alphas and Betas
     * [108]My evolution as a Haskell programmer
     * [109]On learning Haskell
     * [110]Greenspun's Tenth Rule applied to Haskell
     * [111]Cabal with rpm goodness
     * [112]F#
     * [113]Arithemtic coding in Haskell
     * [114]A filesystem tree printer
     * [115]Using Bayesian filtering instead of 'if' in Haskell
     * [116]Combinator parsing
     * [117]Monads for vector spaces, probability and quantum mechanics pt. I
     * [118]Monads, Vector Spaces and Quantum Mechanics pt. II
     * [119]Learning the Haskell programming language
     * [120]A twisted history of monad transformers
     * [121]Monadic parsing
     * [122]Forth as a Haskell DSL
     * [123]A better environment for shell scripting
     * [124]Smart classification using Bayesian monads in Haskell
     * [125]Haskell like data structures in Common Lisp

  68. http://planet.haskell.org/
  69. http://blogs.nubgames.com/code/?p=18
  70. http://blogs.nubgames.com/code/?p=19
  71. http://blogs.nubgames.com/code/?p=22
  72. http://japple.blogspot.com/2007/01/quotient-types-for-information-hiding.html
  73. http://japple.blogspot.com/2007/01/how-many-functions-are-there-of-type.html
  74. http://clemens.endorphin.org/weblog/archives/2007-01.shtml#e2007-01-31T12_21_00.txt
  75. http://neilbartlett.name/blog/?p=13
  76. http://scienceblogs.com/goodmath/2007/01/the_theory_of_monads_and_the_m_1.php
  77. http://neilmitchell.blogspot.com/2007/01/writing-code-by-types.html
  78. http://notes-on-haskell.blogspot.com/2007/01/haskell-open-secret.html
  79. http://notes-on-haskell.blogspot.com/2007/01/ruby-vs-haskell-choose-what-works.html
  80. http://mikeburrell.wordpress.com/2007/02/01/real-time-haskell/
  81. http://mikeburrell.wordpress.com/2007/02/01/functional-idempotence-optimization/
  82. http://japple.blogspot.com/2007/02/countable-ordinals-in-haskell.html
  83. http://vanirsystems.com/danielsblog/?p=103
  84. http://toomuchcode.blogspot.com/2007/02/part-1-programming-and-metaphorical.html
  85. http://toomuchcode.blogspot.com/2007/02/part-2-languages-and-lesser-skilled.html
  86. http://toomuchcode.blogspot.com/2007/02/building-firewall-against-complexity.html
  87. http://toomuchcode.blogspot.com/2007/02/part-4-killer-app.html
  88. http://community.livejournal.com/evan_tech/216270.html
  89. http://sigfpe.blogspot.com/2007/02/comonads-and-reading-from-future.html
  90. http://johnleesmiller.blogspot.com/2007/02/first-post.html
  91. http://www.yomi.at/archive/2007/02/115
  92. http://programmingkungfuqi.blogspot.com/2007/02/monads-in-qi.html
  93. http://www.sdowney.org/2007/01/monads-rest-and-c-template.html
  94. http://notes-on-haskell.blogspot.com/2007/02/whats-wrong-with-for-loop.html
  95. http://notes-on-haskell.blogspot.com/2007/02/whats-wrong-with-for-loop-revisited.html
  96. http://blog.tmorris.net/ignorance-is-mostly-bliss-but-not-always/
  97. http://www.randomhacks.net/articles/2007/02/08/haskell-queues-without-pointers
  98. http://www.cs.nott.ac.uk/~pni/Papers/Notes/typeClassOvld.html
  99. http://www.cs.nott.ac.uk/~pni/Papers/Notes/GADTs.html
 100. http://blog.nurd.se/hype/?p=30
 101. http://www.dysfunctor.org/2007/02/13/architecture-vs-features/
 102. http://kevin.scaldeferri.com/blog/2007/02/12/OneWeek.html
 103. http://qftblog.wordpress.com/2007/02/14/why-its-so-hard-for-imperative-programmers-to-learn-funtional-languages/
 104. http://blog.tmorris.net/refunctoring/
 105. http://cod3po37ry.blogspot.com/2007/02/more-on-haskell-io-and-interact.html
 106. http://foreigndispatches.typepad.com/dispatches/2007/02/an_introduction.html
 107. http://paulspontifications.blogspot.com/2007/02/haskell-for-alphas-and-betas.html
 108. http://onthebalcony.wordpress.com/2007/02/19/my-evolution-as-a-haskell-programmer/
 109. http://osfameron.vox.com/library/post/on-learning-haskell.html
 110. http://japple.blogspot.com/2007/02/conors-rule.html
 111. http://www.serpentine.com/blog/2007/02/20/haskell-cabal-now-with-extra-crunchy-rpm-goodness/
 112. http://reddevnews.com/news/devnews/article.aspx?editorialsid=164
 113. http://vandreev.wordpress.com/2007/01/07/arithmetic-coding/
 114. http://blog.moertel.com/articles/2007/02/22/a-simple-directory-tree-printer-in-haskell
 115. http://www.randomhacks.net/articles/2007/02/22/bayes-rule-and-drug-tests
 116. http://mikeburrell.wordpress.com/2007/02/25/combinator-parsing/
 117. http://sigfpe.blogspot.com/2007/02/monads-for-vector-spaces-probability.html
 118. http://sigfpe.wordpress.com/2007/03/04/monads-vector-spaces-and-quantum-mechanics-pt-ii/
 119. http://printf.wordpress.com/2007/02/27/haskell-functional-programming-language/
 120. http://conway.rutgers.edu/~ccshan/wiki/blog/posts/Monad_transformers.html
 121. http://gbacon.blogspot.com/2007/02/my-first-monadic-program.html
 122. http://shaurz.wordpress.com/2007/03/03/forth-as-a-haskell-dsl-or-lambda-the-ultimate-stack/
 123. http://changelog.complete.org/posts/587-A-better-environment-for-shell-scripting.html
 124. http://www.randomhacks.net/articles/2007/03/03/smart-classification-with-haskell
 125. http://common-lisp.net/project/patty/patty.html

Quotes of the Week

     * sleepingsquirrel: Programming in Haskell is like having an
       interactive conversation with a teleportation machine. You tell it
       you want to go to some place warm and sandy. The machine complains
       about ambiguous constraints. So you tell it that there should be
       plenty of free tropical fruit drinks. It carps 'Inferred location
       less polymorphic than expected'. Whoops, free flowing that is...
       After a few more iterations, there's a little puff of smoke, and
       at the sound of the chimes, you discover you're now on the beach
       in Tahiti. And although you've used the machine many times before,
       you can't help but be impressed that it usually 'Just works' most
       of the time.

     * jmillikin: If I had to work on code with performance requirements,
       Haskell would be my choice (followed by C++). Haskell has
       functional goodness with the ability to break into imperative
       mode, and C++ gives me direct memory management with a few
       functional pieces.

     * Cale: It ought to be called simonPerformIO, and only used if your
       first name is Simon

     * monochrom: m a -> (a -> m b) -> m b is much more to the point than
       'mumble computation mumble computation'

     * mwc: There's a time when your brain doesn't get the monads. Then
       something violent and irreversable happens and you hate every
       other language for not having monads

Code Watch

   Wed Feb 28 05:07:14 PST 2007. Simon Marlow. [126]Remove vectored
   returns. We recently discovered that they aren't a win any more, and
   just cost code size.

 126. http://article.gmane.org/gmane.comp.lang.haskell.cvs.ghc/19418

   Wed Feb 21 09:04:01 PST 2007. simonpj. [127]Allow GADT syntax for
   newtypes

 127. http://article.gmane.org/gmane.comp.lang.haskell.cvs.ghc/19344

About the Haskell Weekly News

   Each week, new editions are posted to [128]the Haskell mailing list as
   well as to [129]the Haskell Sequence and [130]Planet Haskell. [131]RSS
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 128. http://www.haskell.org/mailman/listinfo/haskell
 129. http://sequence.complete.org/
 130. http://planet.haskell.org/
 131. http://sequence.complete.org/node/feed
 132. http://haskell.org/
 133. http://www.cse.unsw.edu.au/~dons/code/hwn/archives/20070305.pdf
 134. http://haskell.org/haskellwiki/HWN
 135. http://www.cse.unsw.edu.au/~dons/code/hwn


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