[Haskell-cafe] Haskell Weekly News: Issue 204

Thu Oct 20 04:32:08 CEST 2011

Welcome to issue 204 of the HWN, a newsletter covering developments in
the Haskell community. This release covers the week of October 9 to 15,
2011.

You can find the HTML version of this issue at:
http://contemplatecode.blogspot.com/2011/10/haskell-weekly-news-issue-204.html

New and Updated Projects

   * lhs2tex-hl (Alessandro Vermeulen; 1.4.3) Upgraded package builds
     with GHC 7.2.x.
     [1] http://goo.gl/2VQmw

   * global-variables (Jean-Marie Gaillourdet; 1.0) A package
     providing a global namespace for IORefs, MVars, and TVars.
     [2] http://goo.gl/B9YPO

   * vector-bytestring (Bas van Dijk; 0.0.0.0) "The very ambitious
     goal of this package is that it will eventually replace our beloved
     bytestring package. By basing this package on vector, we can
     benefit from all the optimizations (like stream-fusion!) in that
     library."
     [3] http://goo.gl/SAUiF

   * simple-actors (Brandon Simmons; 0.1.0) An eDSL library for actor
     model concurrency.
     [4] http://goo.gl/f9hvu

   * ircbot (Jeremy Shaw; 0.1.1) ... "becase that's what Haskell
     really needs -- another irc bot library."
     [5] http://goo.gl/A252O

Quotes of the Week

   * Pseudonym: A type is a collection of values, and a class is a
     collection of types.

   * xplat: you just need to write a corresponding set of modules for
     well-hung coinduction

   * Porges: State is stored in spacesuits. [via: reddit]

   [djahandarie] Group projects are stupid
   [shachaf] Try a semigroup project sometime.
       	     You need to lose your identity.

Top Reddit Stories

   * shqq: Embedding shell commands in Haskell code
     Domain: mainisusuallyafunction.blogspot.com, Score: 51, Comments: 5
     On Reddit: [6] http://goo.gl/b7zj5
     Original: [7] http://goo.gl/9LVhi

   * Shooting yourself in the foot with Haskell
     Domain: haskell.org, Score: 47, Comments: 7
     On Reddit: [8] http://goo.gl/C1VJY
     Original: [9] http://goo.gl/yGceC

   * Why learn Haskell? [PDF slides]
     Domain: ugcs.net, Score: 32, Comments: 31
     On Reddit: [10] http://goo.gl/Coml0
     Original: [11] http://goo.gl/MgVwe

   * How to beat the CAP theorem - purely functional databases
     Domain: nathanmarz.com, Score: 28, Comments: 11
     On Reddit: [12] http://goo.gl/s1TjI
     Original: [13] http://goo.gl/HQvlK

   * Yo /r/haskell, I heard you like monads...
     Domain: self.haskell, Score: 25, Comments: 26
     On Reddit: [14] http://goo.gl/xSbj7
     Original: [15] http://goo.gl/xSbj7

   * FRP and Haskell being used for physiological experimentation and
analysis - Haskell-cafe
     Domain: haskell.org, Score: 21, Comments: 3
     On Reddit: [16] http://goo.gl/XxE3y
     Original: [17] http://goo.gl/fMBMR

   * Composing a list of Enumeratees
     Domain: permalink.gmane.org, Score: 19, Comments: 14
     On Reddit: [18] http://goo.gl/fwcY1
     Original: [19] http://goo.gl/V2bgc

   * hp2pretty-0.5 released - Now with go faster stripes!
     Domain: claudiusmaximus.goto10.org, Score: 19, Comments: 0
     On Reddit: [20] http://goo.gl/csnhI
     Original: [21] http://goo.gl/18myY

   * FRP - How to deal with concurrent external events?
     Domain: apfelmus.nfshost.com, Score: 16, Comments: 0
     On Reddit: [22] http://goo.gl/HqgyJ
     Original: [23] http://goo.gl/2QYcU

   * Talk (by factis research) about developing commercial software in Haskell
     Domain: factisresearch.blogspot.com, Score: 16, Comments: 5
     On Reddit: [24] http://goo.gl/iyKDs
     Original: [25] http://goo.gl/RSHLE

   * A French community for Haskell
     Domain: alpmestan.wordpress.com, Score: 15, Comments: 0
     On Reddit: [26] http://goo.gl/KSy83
     Original: [27] http://goo.gl/rF4Zs

   * VirtuaHac: The Completely Online Hackathon
     Domain: haskell.org, Score: 15, Comments: 8
     On Reddit: [28] http://goo.gl/3Ej9Z
     Original: [29] http://goo.gl/wj05N

   * kmeans-vector: kmeans clustering algorithm implementation
     Domain: hackage.haskell.org, Score: 14, Comments: 0
     On Reddit: [30] http://goo.gl/DcvcO
     Original: [31] http://goo.gl/df48V

Top StackOverflow Questions

   * Meaning of Haskell exceptions
     votes: 19, answers: 2
     Read on SO: [32] http://goo.gl/Aa2H9

   * Are there pronounceable names for common Haskell operators?
     votes: 19, answers: 2
     Read on SO: [33] http://goo.gl/qr2QN

   * Space leak only in certain cases in GHC interpreter when doing:
     concat <some list> !! n
     votes: 18, answers: 0
     Read on SO: [34] http://goo.gl/y7W50

   * Type theory: type kinds
     votes: 18, answers: 3
     Read on SO: [35] http://goo.gl/ne79b

   * Why is the minimalist, example Haskell quicksort not a “true” quicksort?
     votes: 16, answers: 6
     Read on SO: [36] http://goo.gl/Zldpx

   * Space leaks, and Writers, and Sums (oh my!)
     votes: 15, answers: 3
     Read on SO: [37] http://goo.gl/Lt62v

   * Can this functionality be implemented with Haskell's type system?
     votes: 14, answers: 3
     Read on SO: [38] http://goo.gl/4aV7G

   * Total function of type (forall n . Maybe (f n)) -> Maybe (forall n . (f n))
     votes: 14, answers: 3
     Read on SO: [39] http://goo.gl/qUyYR

   * Standard web server interface equivalent to WSGI/Rack for Haskell
     votes: 9, answers: 2
     Read on SO: [40] http://goo.gl/9fWNq

   * Automatic lifting of infix operators to monadic infix operators
     votes: 8, answers: 3
     Read on SO: [41] http://goo.gl/jDQWC

Until next time,
Daniel Santa Cruz

References
   1. http://permalink.gmane.org/gmane.comp.lang.haskell.cafe/93087
   2. http://permalink.gmane.org/gmane.comp.lang.haskell.general/18977
   3. http://permalink.gmane.org/gmane.comp.lang.haskell.general/18975
   4. http://permalink.gmane.org/gmane.comp.lang.haskell.cafe/93016
   5. http://permalink.gmane.org/gmane.comp.lang.haskell.cafe/92986
   6. http://mainisusuallyafunction.blogspot.com/2011/10/shqq-embedding-shell-commands-in.html
   7. http://www.reddit.com/r/haskell/comments/l86s6/shqq_embedding_shell_commands_in_haskell_code/
   8. http://www.haskell.org/haskellwiki/Shooting_your_self_in_the_foot
   9. http://www.reddit.com/r/haskell/comments/l6smh/shooting_yourself_in_the_foot_with_haskell/
  10. http://ugcs.net/~keegan/talks/why-learn-haskell/talk.pdf
  11. http://www.reddit.com/r/haskell/comments/la9ey/why_learn_haskell_pdf_slides/
  12. http://nathanmarz.com/blog/how-to-beat-the-cap-theorem.html
  13. http://www.reddit.com/r/haskell/comments/lb66h/how_to_beat_the_cap_theorem_purely_functional/
  14. http://www.reddit.com/r/haskell/comments/ldu36/yo_rhaskell_i_heard_you_like_monads/
  15. http://www.reddit.com/r/haskell/comments/ldu36/yo_rhaskell_i_heard_you_like_monads/
  16. http://www.haskell.org/pipermail/haskell-cafe/2011-October/095857.html
  17. http://www.reddit.com/r/haskell/comments/l6yep/frp_and_haskell_being_used_for_physiological/
  18. http://permalink.gmane.org/gmane.comp.lang.haskell.cafe/92928
  19. http://www.reddit.com/r/haskell/comments/la4at/composing_a_list_of_enumeratees/
  20. http://claudiusmaximus.goto10.org/cm/2011-10-15_hp2pretty-0.5_released.html
  21. http://www.reddit.com/r/haskell/comments/lcw7n/hp2pretty05_released_now_with_go_faster_stripes/
  22. http://apfelmus.nfshost.com/blog/2011/10/11-frp-concurrent-events.html
  23. http://www.reddit.com/r/haskell/comments/l9hgz/frp_how_to_deal_with_concurrent_external_events/
  24. http://factisresearch.blogspot.com/2011/10/yesterday-i-gave-talk-at-haskell-in.html
  25. http://www.reddit.com/r/haskell/comments/l9zq3/talk_by_factis_research_about_developing/
  26. http://alpmestan.wordpress.com/2011/10/09/a-french-community-for-haskell/
  27. http://www.reddit.com/r/haskell/comments/l6eqx/a_french_community_for_haskell/
  28. http://haskell.org/haskellwiki/VirtuaHac
  29. http://www.reddit.com/r/haskell/comments/l6knx/virtuahac_the_completely_online_hackathon/
  30. http://hackage.haskell.org/package/kmeans-vector-0.1
  31. http://www.reddit.com/r/haskell/comments/l67mi/kmeansvector_kmeans_clustering_algorithm/
  32. http://stackoverflow.com/questions/7704999/meaning-of-haskell-exceptions
  33. http://stackoverflow.com/questions/7746894/are-there-pronounceable-names-for-common-haskell-operators
  34. http://stackoverflow.com/questions/7707661/space-leak-only-in-certain-cases-in-ghc-interpreter-when-doing-concat-some-lis
  35. http://stackoverflow.com/questions/7752452/type-theory-type-kinds
  36. http://stackoverflow.com/questions/7717691/why-is-the-minimalist-example-haskell-quicksort-not-a-true-quicksort
  37. http://stackoverflow.com/questions/7720929/space-leaks-and-writers-and-sums-oh-my
  38. http://stackoverflow.com/questions/7705119/can-this-functionality-be-implemented-with-haskells-type-system
  39. http://stackoverflow.com/questions/7720108/total-function-of-type-forall-n-maybe-f-n-maybe-forall-n-f-n
  40. http://stackoverflow.com/questions/7700619/standard-web-server-interface-equivalent-to-wsgi-rack-for-haskell
  41. http://stackoverflow.com/questions/7742625/automatic-lifting-of-infix-operators-to-monadic-infix-operators