Welcome to issue 270 of the HWN, an issue covering crowd-sourced bits
of information about Haskell from around the web. This issue covers the
week of June 2 to 8, 2013.

Quotes of the Week

   * shachaf: getLine :: IO String contains a String in the same way
     /bin/ls contains a list of files.

Top Reddit Stories

   * Haskell's HLearn library cross-validates more than 400x faster than 
     Java's Weka due to new monoid based algorithm
     Domain: izbicki.me, Score: 86, Comments: 13
     On Reddit: [1] http://goo.gl/dAoe5
     Original: [2] http://goo.gl/dLZJv

   * FP Complete Launches Haskell in Real World Competition with 
     $1,000 Cash Prize Each Month
     Domain: fpcomplete.com, Score: 80, Comments: 10
     On Reddit: [3] http://goo.gl/FthPX
     Original: [4] http://goo.gl/pzgQ2

   * So I write compilers for a living now
     Domain: evincarofautumn.blogspot.it, Score: 76, Comments: 69
     On Reddit: [5] http://goo.gl/hXp0G
     Original: [6] http://goo.gl/wMaab

   * Haskell for all: pipes-parse-1.0.0: Pushback, delimited parsers, 
     resumable parsing, and lenses
     Domain: haskellforall.com, Score: 55, Comments: 77
     On Reddit: [7] http://goo.gl/U3MzG
     Original: [8] http://goo.gl/3wEJ7

   * "Thank you to the Haskell community for encouraging programmers to explore 
     the relationship between algebra and programming." -- My accepted paper at 
     the International Conference of Machine Learning (ICML13)
     Domain: jmlr.org, Score: 54, Comments: 3
     On Reddit: [9] http://goo.gl/Ni0oF
     Original: [10] http://goo.gl/klOzM

   * GHCJS introduction – Concurrent Haskell in the browser, by Luite Stegeman
     Domain: weblog.luite.com, Score: 54, Comments: 27
     On Reddit: [11] http://goo.gl/l9LDH
     Original: [12] http://goo.gl/avaez

   * Haskell from C: Where are the for Loops?
     Domain: fpcomplete.com, Score: 46, Comments: 28
     On Reddit: [13] http://goo.gl/YqkSU
     Original: [14] http://goo.gl/pwYB3

   * fficxx - FFI to C++ in Haskell
     Domain: ianwookim.org, Score: 45, Comments: 12
     On Reddit: [15] http://goo.gl/y1awM
     Original: [16] http://goo.gl/wHF2U

   * Control.Category: now with kind polymorphism
     Domain: neocontra.blogspot.com, Score: 42, Comments: 7
     On Reddit: [17] http://goo.gl/9gb6f
     Original: [18] http://goo.gl/ALvld

   * Pixel art editor in 600 lines of Haskell
     Domain: github.com, Score: 39, Comments: 5
     On Reddit: [19] http://goo.gl/gmFOF
     Original: [20] http://goo.gl/w8yEg

   * Haskell for all: pipes-concurrency-1.2.0: Behaviors and broadcasts
     Domain: haskellforall.com, Score: 35, Comments: 35
     On Reddit: [21] http://goo.gl/rojk1
     Original: [22] http://goo.gl/aNK8l

   * Mastermind in Agda, Running in the Browser
     Domain: people.inf.elte.hu, Score: 28, Comments: 0
     On Reddit: [23] http://goo.gl/N8yty
     Original: [24] http://goo.gl/7lhvT

   * Bittoll: A bitcoin transaction system written in Haskell.
     Domain: bittoll.com, Score: 25, Comments: 13
     On Reddit: [25] http://goo.gl/9MFXB
     Original: [26] http://goo.gl/q39ps

   * standalone-haddock: host your Haskell documentation on your website
     Domain: feuerbach.github.io, Score: 22, Comments: 7
     On Reddit: [27] http://goo.gl/dAsmP
     Original: [28] http://goo.gl/INyIe

Top StackOverflow Questions

   * What is () in Haskell, exactly?
     votes: 18, answers: 4
     Read on SO: [29] http://goo.gl/XkrXD

   * Haskell pre-monadic I/O
     votes: 15, answers: 1
     Read on SO: [30] http://goo.gl/oryYA

   * Display function types in Haskell
     votes: 12, answers: 1
     Read on SO: [31] http://goo.gl/qOtpV

   * Haskell Pattern Matching Fails on Negative Number
     votes: 12, answers: 2
     Read on SO: [32] http://goo.gl/mw4WF

   * Debugging performance bottlenecks for longest common subsequence algorithm
     votes: 11, answers: 1
     Read on SO: [33] http://goo.gl/mfa8S

   * What is a shrink, with regard to Haskell's QuickCheck?
     votes: 11, answers: 2
     Read on SO: [34] http://goo.gl/eLlyO

   * Cross module optimizations in GHC
     votes: 10, answers: 1
     Read on SO: [35] http://goo.gl/RyFQP

   * Functional composition with multi-valued functions in haskell?
     votes: 9, answers: 3
     Read on SO: [36] http://goo.gl/10Xvd

   * A more succinct way to map functions onto fields of an algebraic datatype?
     votes: 9, answers: 1
     Read on SO: [37] http://goo.gl/CfIOa

   * What's the history behind the Functor type class?
     votes: 8, answers: 1
     Read on SO: [38] http://goo.gl/5BwZS

Until next time,
[39]+Daniel Santa Cruz

References

   1. http://izbicki.me/blog/hlearn-cross-validates-400x-faster-than-weka
   2. http://www.reddit.com/r/haskell/comments/1fl33k/haskells_hlearn_library_crossvalidates_more_than/
   3. http://www.fpcomplete.com/blog/2013/06/call-for-submissions
   4. http://www.reddit.com/r/haskell/comments/1fvtbf/fp_complete_launches_haskell_in_real_world/
   5. http://evincarofautumn.blogspot.it/2012/07/so-i-write-compilers-for-living-now.html
   6. http://www.reddit.com/r/haskell/comments/1fsbs2/so_i_write_compilers_for_a_living_now/
   7. http://www.haskellforall.com/2013/06/pipes-parse-100-pushback-delimited.html
   8. http://www.reddit.com/r/haskell/comments/1fjcpg/haskell_for_all_pipesparse100_pushback_delimited/
   9. http://jmlr.org/proceedings/papers/v28/izbicki13.pdf
  10. http://www.reddit.com/r/haskell/comments/1fk8fl/thank_you_to_the_haskell_community_for/
  11. http://weblog.luite.com/wordpress/?p=14
  12. http://www.reddit.com/r/haskell/comments/1fvv5q/ghcjs_introduction_concurrent_haskell_in_the/
  13. https://www.fpcomplete.com/blog/2013/06/haskell-from-c
  14. http://www.reddit.com/r/haskell/comments/1fm55g/haskell_from_c_where_are_the_for_loops/
  15. http://ianwookim.org/fficxx/
  16. http://www.reddit.com/r/haskell/comments/1fy5gy/fficxx_ffi_to_c_in_haskell/
  17. http://neocontra.blogspot.com/2013/06/controlcategory-now-with-kind.html
  18. http://www.reddit.com/r/haskell/comments/1fjjt0/controlcategory_now_with_kind_polymorphism/
  19. https://github.com/mchakravarty/BigPixel
  20. http://www.reddit.com/r/haskell/comments/1fqyrk/pixel_art_editor_in_600_lines_of_haskell/
  21. http://www.haskellforall.com/2013/06/pipes-concurrency-120-behaviors-and.html
  22. http://www.reddit.com/r/haskell/comments/1ft1sc/haskell_for_all_pipesconcurrency120_behaviors_and/
  23. http://people.inf.elte.hu/divip/mastermind/index.html
  24. http://www.reddit.com/r/haskell/comments/1fx4rb/mastermind_in_agda_running_in_the_browser/
  25. https://www.bittoll.com/
  26. http://www.reddit.com/r/haskell/comments/1fqtmu/bittoll_a_bitcoin_transaction_system_written_in/
  27. http://feuerbach.github.io/standalone-haddock/
  28. http://www.reddit.com/r/haskell/comments/1fuw5n/standalonehaddock_host_your_haskell_documentation/
  29. http://stackoverflow.com/questions/16892570/what-is-in-haskell-exactly
  30. http://stackoverflow.com/questions/17002119/haskell-pre-monadic-i-o
  31. http://stackoverflow.com/questions/16971221/display-function-types-in-haskell
  32. http://stackoverflow.com/questions/16976543/haskell-pattern-matching-fails-on-negative-number
  33. http://stackoverflow.com/questions/16952956/debugging-performance-bottlenecks-for-longest-common-subsequence-algorithm
  34. http://stackoverflow.com/questions/16968549/what-is-a-shrink-with-regard-to-haskells-quickcheck
  35. http://stackoverflow.com/questions/16908539/cross-module-optimizations-in-ghc
  36. http://stackoverflow.com/questions/16888222/functional-composition-with-multi-valued-functions-in-haskell
  37. http://stackoverflow.com/questions/16974868/a-more-succinct-way-to-map-functions-onto-fields-of-an-algebraic-datatype
  38. http://stackoverflow.com/questions/16880577/whats-the-history-behind-the-functor-type-class
  39. https://plus.google.com/105107667630152149014/about