Welcome to issue 265 of the HWN, an issue covering crowd-sourced bits
of information about Haskell from around the web. This issue covers the
week of March 31 to April 6, 2013.

Quotes of the Week

   * Jafet: Haskell is an abstract research language used only in
     academia, education, banking, stock trading, circuit design,
     embedded systems, cryptography, operating systems research,
     bioinformatics, phone apps, and web services.

   * monochrom: primop is where the turtle tower ends and the russian
     dolls begin!

   * sclv: haha. i love this stuff but if i bury myself in it my head
     will start spinning around like exorcist and i will start spitting
     blood

Top Reddit Stories

   * Haskell beats C using generalised stream fusion - Geoff Mainland, 
     Simon Peyton Jones, Simon Marlow, Roman Leshchinskiy. Submitted to ICFP 2013 [PDF]
     Domain: research.microsoft.com, Score: 106, Comments: 47
     On Reddit: [1] http://goo.gl/Ui7bS
     Original: [2] http://goo.gl/es51B

   * Functor is now a superclass of Monad in GHC HEAD
     Domain: darcs.haskell.org, Score: 87, Comments: 33
     On Reddit: [3] http://goo.gl/B1LYf
     Original: [4] http://goo.gl/JiunP

   * Yet Another Lambda Blog » Haskell as fast as C: A case study
     Domain: lambda.jstolarek.com, Score: 61, Comments: 25
     On Reddit: [5] http://goo.gl/cemyl
     Original: [6] http://goo.gl/uCbTd

   * Beautiful Concurrency - a series of articles by Simon Peyton-Jones - on 
     FP Complete School of Haskell
     Domain: fpcomplete.com, Score: 60, Comments: 20
     On Reddit: [7] http://goo.gl/pWAA4
     Original: [8] http://goo.gl/ynFG8

   * Web Woes for Haskell
     Domain: self.haskell, Score: 43, Comments: 42
     On Reddit: [9] http://goo.gl/vl13n
     Original: [10] http://goo.gl/vl13n

   * Cap'n Proto: faster protocol buffers, written in Haskell & C++
     Domain: kentonv.github.com, Score: 42, Comments: 11
     On Reddit: [11] http://goo.gl/6Qwza
     Original: [12] http://goo.gl/94iip

   * Resource limits for Haskell
     Domain: blog.ezyang.com, Score: 38, Comments: 1
     On Reddit: [13] http://goo.gl/01WPS
     Original: [14] http://goo.gl/KjwNx

   * Dependent Types - A New Paradigm? by Paul Callaghan
     Domain: pragprog.com, Score: 33, Comments: 1
     On Reddit: [15] http://goo.gl/Gjs3K
     Original: [16] http://goo.gl/4wbYa

   * So I accidentally a profunctors tutorial
     Domain: fpcomplete.com, Score: 31, Comments: 43
     On Reddit: [17] http://goo.gl/QnzoR
     Original: [18] http://goo.gl/VDlYh

   * UPenn CIS 194: Intro to Haskell, Instructor: Brent Yorgey
     Domain: seas.upenn.edu, Score: 31, Comments: 4
     On Reddit: [19] http://goo.gl/zXgrM
     Original: [20] http://goo.gl/OC3x1

   * Sorting with Agda
     Domain: mazzo.li, Score: 30, Comments: 33
     On Reddit: [21] http://goo.gl/rkq58
     Original: [22] http://goo.gl/8GRCF

   * Announcing The Pragmatic Haskeller
     Domain: cakesolutions.net, Score: 29, Comments: 7
     On Reddit: [23] http://goo.gl/3ahrb
     Original: [24] http://goo.gl/AsOKQ

   * Flavours of free applicative functors
     Domain: ro-che.info, Score: 27, Comments: 6
     On Reddit: [25] http://goo.gl/oE2sk
     Original: [26] http://goo.gl/sE5VD

   * Free Applicative Functors (ICFP submission)
     Domain: paolocapriotti.com, Score: 25, Comments: 11
     On Reddit: [27] http://goo.gl/2dB7B
     Original: [28] http://goo.gl/VWnHG

   * Handling out of memory?
     Domain: self.haskell, Score: 25, Comments: 17
     On Reddit: [29] http://goo.gl/mGwUt
     Original: [30] http://goo.gl/mGwUt

   * hydra-print - visualizing multiple texts streams
     Domain: parfunk.blogspot.se, Score: 24, Comments: 7
     On Reddit: [31] http://goo.gl/uToAZ
     Original: [32] http://goo.gl/lc70w

   * Lazy IO breaks equational reasoning
     Domain: okmij.org, Score: 24, Comments: 124
     On Reddit: [33] http://goo.gl/48f0h
     Original: [34] http://goo.gl/m8Vbr

   * Haskell on Windows
     Domain: gundersen.net, Score: 23, Comments: 14
     On Reddit: [35] http://goo.gl/oRV4B
     Original: [36] http://goo.gl/0hOL4

   * Constrained Monads (GADTs indexed by Constraint)
     Domain: ittc.ku.edu, Score: 21, Comments: 7
     On Reddit: [37] http://goo.gl/lVRpl
     Original: [38] http://goo.gl/jtbU3

Top StackOverflow Questions

   * Simple examples to illustrate Category, Monoid and Monad?
     votes: 28, answers: 1
     Read on SO: [39] http://goo.gl/HPE8k

   * Which techniques have contributed the most to Haskell's improving 
     performance? [closed]
     votes: 18, answers: 1
     Read on SO: [40] http://goo.gl/tz904

   * Why does Parsec not use Control.Applicative operators
     votes: 13, answers: 1
     Read on SO: [41] http://goo.gl/0mR3f

   * ghc 7.4.2, Dynamically calling modules
     votes: 10, answers: 1
     Read on SO: [42] http://goo.gl/MZD8q

   * What's wrong with this implementation of quicksort using Arrows?
     votes: 10, answers: 2
     Read on SO: [43] http://goo.gl/zwhfy

   * Initializing algebraic data type from list
     votes: 9, answers: 4
     Read on SO: [44] http://goo.gl/nbyUP

   * Scoped type variables require explicit foralls. Why?
     votes: 9, answers: 1
     Read on SO: [45] http://goo.gl/SUlCf

   * Parsing UnicodeSyntax with haskell-src-exts
     votes: 8, answers: 1
     Read on SO: [46] http://goo.gl/Yi8Vd

Until next time,
+Daniel Santa Cruz

References

   1. http://research.microsoft.com/en-us/um/people/simonpj/papers/ndp/haskell-beats-C.pdf
   2. http://www.reddit.com/r/haskell/comments/1br0ls/haskell_beats_c_using_generalised_stream_fusion/
   3. http://darcs.haskell.org/libraries/base/GHC/Base.lhs
   4. http://www.reddit.com/r/haskell/comments/1bfojn/functor_is_now_a_superclass_of_monad_in_ghc_head/
   5. http://lambda.jstolarek.com/2013/04/haskell-as-fast-as-c-a-case-study/
   6. http://www.reddit.com/r/haskell/comments/1bikvs/yet_another_lambda_blog_haskell_as_fast_as_c_a/
   7. https://www.fpcomplete.com/user/simonpj/beautiful-concurrency
   8. http://www.reddit.com/r/haskell/comments/1bm3ep/beautiful_concurrency_a_series_of_articles_by/
   9. http://www.reddit.com/r/haskell/comments/1bqsvi/web_woes_for_haskell/
  10. http://www.reddit.com/r/haskell/comments/1bqsvi/web_woes_for_haskell/
  11. http://kentonv.github.com/capnproto/install.html
  12. http://www.reddit.com/r/haskell/comments/1bjt4f/capn_proto_faster_protocol_buffers_written_in/
  13. http://blog.ezyang.com/2013/04/resource-limits-for-haskell/
  14. http://www.reddit.com/r/haskell/comments/1bkjj8/resource_limits_for_haskell/
  15. http://pragprog.com/magazines/2013-04/dependent-types
  16. http://www.reddit.com/r/haskell/comments/1bmqba/dependent_types_a_new_paradigm_by_paul_callaghan/
  17. https://www.fpcomplete.com/user/liyang/profunctors
  18. http://www.reddit.com/r/haskell/comments/1bg21c/so_i_accidentally_a_profunctors_tutorial/
  19. http://www.seas.upenn.edu/~cis194/lectures.html
  20. http://www.reddit.com/r/haskell/comments/1bqax8/upenn_cis_194_intro_to_haskell_instructor_brent/
  21. http://mazzo.li/posts/AgdaSort.html
  22. http://www.reddit.com/r/haskell/comments/1biasi/sorting_with_agda/
  23. http://www.cakesolutions.net/teamblogs/2013/04/05/announcing-the-pragmatic-haskeller/
  24. http://www.reddit.com/r/haskell/comments/1brbac/announcing_the_pragmatic_haskeller/
  25. http://ro-che.info/articles/2013-03-31-flavours-of-free-applicative-functors.html
  26. http://www.reddit.com/r/haskell/comments/1be2iv/flavours_of_free_applicative_functors/
  27. http://paolocapriotti.com/blog/2013/04/03/free-applicative-functors/
  28. http://www.reddit.com/r/haskell/comments/1bnql3/free_applicative_functors_icfp_submission/
  29. http://www.reddit.com/r/haskell/comments/1bsucw/handling_out_of_memory/
  30. http://www.reddit.com/r/haskell/comments/1bsucw/handling_out_of_memory/
  31. http://parfunk.blogspot.se/2013/04/hydra-print.html
  32. http://www.reddit.com/r/haskell/comments/1bsc9u/hydraprint_visualizing_multiple_texts_streams/
  33. http://okmij.org/ftp/Haskell/index.html#lazyIO-not-True
  34. http://www.reddit.com/r/haskell/comments/1bsitm/lazy_io_breaks_equational_reasoning/
  35. http://www.gundersen.net/haskell-on-windows/
  36. http://www.reddit.com/r/haskell/comments/1bsm6v/haskell_on_windows/
  37. http://www.ittc.ku.edu/csdl/fpg/papers/Sculthorpe-13-ConstrainedMonad.html
  38. http://www.reddit.com/r/haskell/comments/1bktx3/constrained_monads_gadts_indexed_by_constraint/
  39. http://stackoverflow.com/questions/15726733/simple-examples-to-illustrate-category-monoid-and-monad
  40. http://stackoverflow.com/questions/15750998/which-techniques-have-contributed-the-most-to-haskells-improving-performance
  41. http://stackoverflow.com/questions/15767978/why-does-parsec-not-use-control-applicative-operators
  42. http://stackoverflow.com/questions/15824756/ghc-7-4-2-dynamically-calling-modules
  43. http://stackoverflow.com/questions/15849550/whats-wrong-with-this-implementation-of-quicksort-using-arrows
  44. http://stackoverflow.com/questions/15734573/initializing-algebraic-data-type-from-list
  45. http://stackoverflow.com/questions/15800878/scoped-type-variables-require-explicit-foralls-why
  46. http://stackoverflow.com/questions/15784076/parsing-unicodesyntax-with-haskell-src-exts
  47. https://plus.google.com/105107667630152149014/about