[Haskell-cafe] Haskell Weekly News: Issue 242

Daniel Santa Cruz dstcruz at gmail.com
Thu Aug 30 03:19:08 CEST 2012


Welcome to issue 242 of the HWN, an issue covering crowd-sourced bits
of information about Haskell from around the web. This issue covers the
week of August 19 to 25, 2012.

Quotes of the Week

   * srhb: I think that's going into space rather than diving into the
           deep end.

   * edwardk: normally i don't bother with little things like
              "documentation", "benchmarks" and "tests", but I recently
              discovered that when I do, I get these curious things called
              "users".

   * shachaf: "Number of comonads released by edwardk will exceed the
              number of words in the English language by 2015, experts report."

Top Reddit Stories

   * Hackage2 server ready for testing
     Domain: haskell.org, Score: 75, Comments: 16
     On Reddit: [1] http://goo.gl/WTebL
     Original: [2] http://goo.gl/dHkGo

   * Monads In Pictures
     Domain: newartisans.com, Score: 60, Comments: 24
     On Reddit: [3] http://goo.gl/QMfGv
     Original: [4] http://goo.gl/ycmvx

   * A new fast and easy to use CSV library
     Domain: blog.johantibell.com, Score: 53, Comments: 26
     On Reddit: [5] http://goo.gl/eRKSm
     Original: [6] http://goo.gl/uRmfz

   * duckduckgo.com just became my favorite search engine due to haskell support
     Domain: self.haskell, Score: 50, Comments: 14
     On Reddit: [7] http://goo.gl/1tBCg
     Original: [8] http://goo.gl/1tBCg

   * An example on how ridiculously powerful haskells type system is
     Domain: chrisdone.com, Score: 44, Comments: 61
     On Reddit: [9] http://goo.gl/iwJT2
     Original: [10] http://goo.gl/NovM7

   * Galois Internship Available: Come build high-assurance autonomous vehicles!
     Domain: corp.galois.com, Score: 43, Comments: 13
     On Reddit: [11] http://goo.gl/iJEih
     Original: [12] http://goo.gl/8ckL4

   * Issue 20 « The Monad.Reader
     Domain: themonadreader.wordpress.com, Score: 34, Comments: 8
     On Reddit: [13] http://goo.gl/K5Cc7
     Original: [14] http://goo.gl/dBSdK

   * Functional Game Design: Making Pong in Elm
     Domain: elm-lang.org, Score: 29, Comments: 11
     On Reddit: [15] http://goo.gl/sCdfE
     Original: [16] http://goo.gl/RL2i1

   * Making HaskellDB slightly more type-safe
     Domain: chrisdone.com, Score: 28, Comments: 3
     On Reddit: [17] http://goo.gl/b16v5
     Original: [18] http://goo.gl/7v38l

   * Identifying outdated packages in cabal install plans
     Domain: byorgey.wordpress.com, Score: 24, Comments: 5
     On Reddit: [19] http://goo.gl/4yTrR
     Original: [20] http://goo.gl/Zjw7b

   * ghcLiVE project escapes!
     Domain: ghclive.wordpress.com, Score: 23, Comments: 16
     On Reddit: [21] http://goo.gl/IiXaA
     Original: [22] http://goo.gl/QzUHW

   * My view on why relational algebra matters
     Domain: users.utu.fi, Score: 22, Comments: 16
     On Reddit: [23] http://goo.gl/byYZW
     Original: [24] http://goo.gl/3NSmI

   * ANN basic-prelude 0.3 (now comes with a fully-featured Prelude replacement)
     Domain: haskell.org, Score: 21, Comments:
     On Reddit: [25] http://goo.gl/klUAO
     Original: [26] http://goo.gl/4Ccyv

   * I just realized that running monads is applying a left monad action
     Domain: self.haskell, Score: 21, Comments: 53
     On Reddit: [27] http://goo.gl/Geus4
     Original: [28] http://goo.gl/Geus4

   * You can soon play in the cabal sandbox
     Domain: blog.johantibell.com, Score: 20, Comments: 10
     On Reddit: [29] http://goo.gl/QuVo0
     Original: [30] http://goo.gl/6Q9a9

   * Unordered tuples and type algebra
     Domain: byorgey.wordpress.com, Score: 18, Comments: 3
     On Reddit: [31] http://goo.gl/N8iuz
     Original: [32] http://goo.gl/8l11g

   * Haskell-Type-Exts Passed the Final Evaluation
     Domain: cleantypecheck.wordpress.com, Score: 16, Comments: 3
     On Reddit: [33] http://goo.gl/ok7CL
     Original: [34] http://goo.gl/ttsFb

   * LambdaJam Conference (from the creator of Strange Loop)
     -- Coming to Chicago in Summer 2013!
     Domain: lambdajam.com, Score: 15, Comments:
     On Reddit: [35] http://goo.gl/ytWNE
     Original: [36] http://goo.gl/ziyYc

   * Hello world in SKI combinator calculus
     Domain: self.haskell, Score: 14, Comments: 16
     On Reddit: [37] http://goo.gl/qVDMw
     Original: [38] http://goo.gl/qVDMw

   * Is this Monoid instance in the standard library somewhere?
     Domain: self.haskell, Score: 14, Comments: 7
     On Reddit: [39] http://goo.gl/cFHG7
     Original: [40] http://goo.gl/cFHG7

   * Applicative functors: definition and syntax (a reply)
     Domain: tomasp.net, Score: 13, Comments: 7
     On Reddit: [41] http://goo.gl/4VPKR
     Original: [42] http://goo.gl/saU2j

Top StackOverflow Questions

   * Lazy Evaluation and Time Complexity
     votes: 40, answers: 7
     Read on SO: [43] http://goo.gl/f9QTO

   * What is the purpose of Rank2Types?
     votes: 21, answers: 3
     Read on SO: [44] http://goo.gl/XrPHP

   * “Modern” HList?
     votes: 16, answers: 1
     Read on SO: [45] http://goo.gl/X0LJ4

   * Overloading of operators
     votes: 14, answers: 1
     Read on SO: [46] http://goo.gl/1rB0O

   * When is a composition of catamorphisms a catamorphism?
     votes: 11, answers: 4
     Read on SO: [47] http://goo.gl/x7eBk

   * Tacit function composition in Haskell
     votes: 10, answers: 2
     Read on SO: [48] http://goo.gl/TIvMN

   * Haskell pattern matching on GADTs with Data Kinds
     votes: 9, answers: 1
     Read on SO: [49] http://goo.gl/5fgAR

   * Store polymorphic callbacks in Haskell
     votes: 8, answers: 1
     Read on SO: [50] http://goo.gl/QMOlq

   * Having trouble understanding Haskell's type system
     votes: 8, answers: 2
     Read on SO: [51] http://goo.gl/n8FfC

   * Function composition hint
     votes: 7, answers: 2
     Read on SO: [52] http://goo.gl/kvgZj

   * Comparing speed of Haskell and C for the computation of primes
     votes: 6, answers: 4
     Read on SO: [53] http://goo.gl/gPh02

Until next time,
Daniel Santa Cruz

References

   1. http://www.haskell.org/pipermail/cabal-devel/2012-August/008977.html
   2. http://www.reddit.com/r/haskell/comments/yr9t1/hackage2_server_ready_for_testing/
   3. http://newartisans.com/2012/08/monads-in-pictures/
   4. http://www.reddit.com/r/haskell/comments/ykmgg/monads_in_pictures/
   5. http://blog.johantibell.com/2012/08/a-new-fast-and-easy-to-use-csv-library.html
   6. http://www.reddit.com/r/haskell/comments/yqh7z/a_new_fast_and_easy_to_use_csv_library/
   7. http://www.reddit.com/r/haskell/comments/yjdkh/duckduckgocom_just_became_my_favorite_search/
   8. http://www.reddit.com/r/haskell/comments/yjdkh/duckduckgocom_just_became_my_favorite_search/
   9. http://chrisdone.com/posts/2010-10-07-haskelldb-and-typeoperator-madness.html
  10. http://www.reddit.com/r/haskell/comments/yosoe/an_example_on_how_ridiculously_powerful_haskells/
  11. http://corp.galois.com/blog/2012/8/21/galois-internship-available.html
  12. http://www.reddit.com/r/haskell/comments/yl84x/galois_internship_available_come_build/
  13. http://themonadreader.wordpress.com/2012/08/25/issue-20/
  14. http://www.reddit.com/r/haskell/comments/yu9bu/issue_20_the_monadreader/
  15. http://elm-lang.org/blog/games-in-elm/part-0/Making-Pong.html
  16. http://www.reddit.com/r/haskell/comments/yp27x/functional_game_design_making_pong_in_elm/
  17. http://chrisdone.com/posts/2012-08-25-haskelldb-more-type-safe.html
  18. http://www.reddit.com/r/haskell/comments/ysuvr/making_haskelldb_slightly_more_typesafe/
  19. http://byorgey.wordpress.com/2012/08/25/identifying-outdated-packages-in-cabal-install-plans/
  20. http://www.reddit.com/r/haskell/comments/ytckc/identifying_outdated_packages_in_cabal_install/
  21. http://ghclive.wordpress.com/2012/08/20/ghclive-project-escapes/
  22. http://www.reddit.com/r/haskell/comments/yjtql/ghclive_project_escapes/
  23. http://users.utu.fi/machra/posts/2012-08-23-relalgebra.html
  24. http://www.reddit.com/r/haskell/comments/ypdox/my_view_on_why_relational_algebra_matters/
  25. http://www.haskell.org/pipermail/haskell/2012-August/023477.html
  26. http://www.reddit.com/r/haskell/comments/yralu/ann_basicprelude_03_now_comes_with_a/
  27. http://www.reddit.com/r/haskell/comments/ytovd/i_just_realized_that_running_monads_is_applying_a/
  28. http://www.reddit.com/r/haskell/comments/ytovd/i_just_realized_that_running_monads_is_applying_a/
  29. http://blog.johantibell.com/2012/08/you-can-soon-play-in-cabal-sandbox.html
  30. http://www.reddit.com/r/haskell/comments/ys359/you_can_soon_play_in_the_cabal_sandbox/
  31. http://byorgey.wordpress.com/2012/08/24/unordered-tuples-and-type-algebra/
  32. http://www.reddit.com/r/haskell/comments/ysuyr/unordered_tuples_and_type_algebra/
  33. http://cleantypecheck.wordpress.com/2012/08/24/haskell-type-exts-passed-the-final-evaluation/
  34. http://www.reddit.com/r/haskell/comments/yrzcq/haskelltypeexts_passed_the_final_evaluation/
  35. http://lambdajam.com/
  36. http://www.reddit.com/r/haskell/comments/yprlk/lambdajam_conference_from_the_creator_of_strange/
  37. http://www.reddit.com/r/haskell/comments/ypcu7/hello_world_in_ski_combinator_calculus/
  38. http://www.reddit.com/r/haskell/comments/ypcu7/hello_world_in_ski_combinator_calculus/
  39. http://www.reddit.com/r/haskell/comments/yqt89/is_this_monoid_instance_in_the_standard_library/
  40. http://www.reddit.com/r/haskell/comments/yqt89/is_this_monoid_instance_in_the_standard_library/
  41. http://tomasp.net/blog/applicative-functors.aspx
  42. http://www.reddit.com/r/haskell/comments/ykto4/applicative_functors_definition_and_syntax_a_reply/
  43. http://stackoverflow.com/questions/12057658/lazy-evaluation-and-time-complexity
  44. http://stackoverflow.com/questions/12031878/what-is-the-purpose-of-rank2types
  45. http://stackoverflow.com/questions/12078792/modern-hlist
  46. http://stackoverflow.com/questions/12076475/overloading-of-operators
  47. http://stackoverflow.com/questions/12103309/when-is-a-composition-of-catamorphisms-a-catamorphism
  48. http://stackoverflow.com/questions/12061176/tacit-function-composition-in-haskell
  49. http://stackoverflow.com/questions/12067503/haskell-pattern-matching-on-gadts-with-data-kinds
  50. http://stackoverflow.com/questions/12044490/store-polymorphic-callbacks-in-haskell
  51. http://stackoverflow.com/questions/12047481/having-trouble-understanding-haskells-type-system
  52. http://stackoverflow.com/questions/12025230/function-composition-hint
  53. http://stackoverflow.com/questions/12026668/comparing-speed-of-haskell-and-c-for-the-computation-of-primes



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