[Haskell-cafe] Haskell Weekly News: Issue 259

Thu Feb 21 05:05:16 CET 2013

Welcome to issue 259 of the HWN, an issue covering crowd-sourced bits
of information about Haskell from around the web. This issue covers the
week of February 10 to 16, 2013.

Quotes of the Week

   * frerich: i thought endo is where the ewoks live

   * edwardk: on the other hand i also write excessively polymorphic
       code

Top Reddit Stories

   * Comonads are objects
     Domain: haskellforall.com, Score: 105, Comments: 86
     On Reddit: [1] http://goo.gl/ssFWD
     Original: [2] http://goo.gl/ADN3k

   * GHC HEAD now has OverloadedLists as an extension - allowing you to
more
     easily specify literal Maps, Text, Vector, ByteString etc values.
     Domain: hackage.haskell.org, Score: 86, Comments: 66
     On Reddit: [3] http://goo.gl/tVmBE
     Original: [4] http://goo.gl/m08GR

   * GHC HEAD: new parallel I/O manager merged
     Domain: haskell.org, Score: 67, Comments: 39
     On Reddit: [5] http://goo.gl/HX04c
     Original: [6] http://goo.gl/j8AaN

   * The Algebra of Algebraic Data Types (Part I)
     Domain: chris-taylor.github.com, Score: 51, Comments: 23
     On Reddit: [7] http://goo.gl/9WjrL
     Original: [8] http://goo.gl/Jyco0

   * deprecation rage :: hpaste
     Domain: hpaste.org, Score: 49, Comments: 9
     On Reddit: [9] http://goo.gl/ycHWD
     Original: [10] http://goo.gl/KAdsV

   * Github incorrectly recognizes haskell code as perl thus making
language
     usage studies based on github useless.
     Domain: github.com, Score: 45, Comments: 45
     On Reddit: [11] http://goo.gl/WQN38
     Original: [12] http://goo.gl/jfpeH

   * StackOverflow [haskell] hits 10k questions!
     Domain: imgur.com, Score: 41, Comments: 31
     On Reddit: [13] http://goo.gl/znqwX
     Original: [14] http://goo.gl/cdm3C

   * Don Stewart provides a great concise overview of the many areas of
     Haskell performance analysis
     Domain: stackoverflow.com, Score: 39, Comments: 1
     On Reddit: [15] http://goo.gl/W9AOL
     Original: [16] http://goo.gl/nC6Mk

   * The Algebra of Algebraic Data Types, Part 2
     Domain: chris-taylor.github.com, Score: 37, Comments: 9
     On Reddit: [17] http://goo.gl/VHUjp
     Original: [18] http://goo.gl/mk95s

   * Upcoming conduit 1.0 & comparison to pipes & io-streams
     Domain: yesodweb.com, Score: 32, Comments: 11
     On Reddit: [19] http://goo.gl/dbnpi
     Original: [20] http://goo.gl/8RHfb

   * Library: A collection of tools for processing PDF files in Haskell
     Domain: github.com, Score: 31, Comments: 38
     On Reddit: [21] http://goo.gl/BtpFw
     Original: [22] http://goo.gl/loL4n

   * Introduction to Haskell, Lecture 5 is Live (Creating Data Types)
     Domain: shuklan.com, Score: 29, Comments: 2
     On Reddit: [23] http://goo.gl/h2q3G
     Original: [24] http://goo.gl/ASx0B

   * FP Complete Hiring for Haskell evangelist / customer and community
     relations advocate
     Domain: haskellers.com, Score: 28, Comments: 0
     On Reddit: [25] http://goo.gl/g2nic
     Original: [26] http://goo.gl/di728

   * Quick and Easy DSLs with Writer Endo
     Domain: ocharles.org.uk, Score: 22, Comments: 17
     On Reddit: [27] http://goo.gl/6p43B
     Original: [28] http://goo.gl/p8aX4

Top StackOverflow Questions

   * Least-strict (*)
     votes: 17, answers: 2
     Read on SO: [29] http://goo.gl/tHzUf

   * Referential transparency with polymorphism in Haskell
     votes: 14, answers: 1
     Read on SO: [30] http://goo.gl/PyBgK

   * Truncating to Word type
     votes: 11, answers: 1
     Read on SO: [31] http://goo.gl/C4wwu

   * Is there a generalization of these Free-like constructions?
     votes: 11, answers: 0
     Read on SO: [32] http://goo.gl/WLb7S

   * How fast is Data.Sequence.Seq compared to []?
     votes: 9, answers: 1
     Read on SO: [33] http://goo.gl/d0x2d

   * Does FreeT keep the equational reasoning benefits of Free?
     votes: 9, answers: 1
     Read on SO: [34] http://goo.gl/7vu37

   * Understanding recursion in Haskell
     votes: 7, answers: 5
     Read on SO: [35] http://goo.gl/I2SBM

   * What laws are the standard Haskell type classes expected to uphold?
     votes: 7, answers: 2
     Read on SO: [36] http://goo.gl/FqQ5J

   * What does (== “ ”) mean, in Haskell?
     votes: 7, answers: 4
     Read on SO: [37] http://goo.gl/EecMz

   * Linking separate projects in GHC
     votes: 7, answers: 1
     Read on SO: [38] http://goo.gl/ZjVao

   * What are structures with “subtraction” but no inverse?
     votes: 7, answers: 1
     Read on SO: [39] http://goo.gl/SaQ66

Until next time,
+Daniel Santa Cruz

References

   1.
http://www.haskellforall.com/2013/02/you-could-have-invented-comonads.html
   2. http://www.reddit.com/r/haskell/comments/18isiu/comonads_are_objects/
   3. http://hackage.haskell.org/trac/ghc/wiki/OverloadedLists
   4.
http://www.reddit.com/r/haskell/comments/18ncub/ghc_head_now_has_overloadedlists_as_an_extension/
   5. http://www.haskell.org/pipermail/ghc-devs/2013-February/000414.html
   6.
http://www.reddit.com/r/haskell/comments/18d81l/ghc_head_new_parallel_io_manager_merged/
   7.
http://chris-taylor.github.com/blog/2013/02/10/the-algebra-of-algebraic-data-types/
   8.
http://www.reddit.com/r/haskell/comments/18902u/the_algebra_of_algebraic_data_types_part_i/
   9. http://hpaste.org/82331
  10.
http://www.reddit.com/r/haskell/comments/18hnh3/deprecation_rage_hpaste/
  11. https://github.com/timthelion?tab=repositories
  12.
http://www.reddit.com/r/haskell/comments/189cti/github_incorrectly_recognizes_haskell_code_as/
  13. http://imgur.com/Wtx1kT4
  14.
http://www.reddit.com/r/haskell/comments/18kwe2/stackoverflow_haskell_hits_10k_questions/
  15. http://stackoverflow.com/a/3276557/74497
  16.
http://www.reddit.com/r/haskell/comments/18jkvw/don_stewart_provides_a_great_concise_overview_of/
  17.
http://chris-taylor.github.com/blog/2013/02/11/the-algebra-of-algebraic-data-types-part-ii/
  18.
http://www.reddit.com/r/haskell/comments/18bqth/the_algebra_of_algebraic_data_types_part_2/
  19. http://www.yesodweb.com/blog/2013/02/upcoming-conduit-1-0
  20.
http://www.reddit.com/r/haskell/comments/18iskd/upcoming_conduit_10_comparison_to_pipes_iostreams/
  21. https://github.com/Yuras/pdf-toolbox
  22.
http://www.reddit.com/r/haskell/comments/18n0l1/library_a_collection_of_tools_for_processing_pdf/
  23. http://shuklan.com/haskell/lec05.html
  24.
http://www.reddit.com/r/haskell/comments/18e0vn/introduction_to_haskell_lecture_5_is_live/
  25. http://www.haskellers.com/jobs/25
  26.
http://www.reddit.com/r/haskell/comments/18b37b/fp_complete_hiring_for_haskell_evangelist/
  27.
http://ocharles.org.uk/blog/posts/2013-02-12-quick-dsls-with-endo-writers.html
  28.
http://www.reddit.com/r/haskell/comments/18dhwf/quick_and_easy_dsls_with_writer_endo/
  29. http://stackoverflow.com/questions/14906261/least-strict
  30.
http://stackoverflow.com/questions/14865734/referential-transparency-with-polymorphism-in-haskell
  31. http://stackoverflow.com/questions/14820699/truncating-to-word-type
  32.
http://stackoverflow.com/questions/14852712/is-there-a-generalization-of-these-free-like-constructions
  33.
http://stackoverflow.com/questions/14798613/how-fast-is-data-sequence-seq-compared-to
  34.
http://stackoverflow.com/questions/14907510/does-freet-keep-the-equational-reasoning-benefits-of-free
  35.
http://stackoverflow.com/questions/14820138/understanding-recursion-in-haskell
  36.
http://stackoverflow.com/questions/14861379/what-laws-are-the-standard-haskell-type-classes-expected-to-uphold
  37. http://stackoverflow.com/questions/14865442/what-does-mean-in-haskell
  38.
http://stackoverflow.com/questions/14884561/linking-separate-projects-in-ghc
  39.
http://stackoverflow.com/questions/14913904/what-are-structures-with-subtraction-but-no-inverse
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