Welcome to issue 293 of the HWN, an issue covering crowd-sourced bits
of information about Haskell from around the web. This issue covers
from April 20 to 26, 2014

Quotes of the Week

   * monochrom: linux's ulimit for main memory will not help because
     linux kernel's allocator is a lazy yes-man (think irrefutable
     pattern)

   * edwardk: lens is the only library I've ever written that generates
     hate mail and invites to give talks in almost equal measure

   * shachaf: You don't need lens to produce or consume lenses. You just
     need it to complain about them.

   * glguy_: Reddit has shown you don't need to have used the lens
     package to complain about it, either

Top Reddit Stories

   * What I Wish I Knew When Learning Haskell 2.0
     Domain: dev.stephendiehl.com, Score: 191, Comments: 37
     On Reddit: [1] http://goo.gl/PkvrnZ
     Original: [2] http://goo.gl/ljYe4w

   * Announcing cabal 1.20
     Domain: blog.johantibell.com, Score: 141, Comments: 38
     On Reddit: [3] http://goo.gl/H16RoZ
     Original: [4] http://goo.gl/2r3vBH

   * Lens is unidiomatic Haskell
     Domain: ro-che.info, Score: 124, Comments: 231
     On Reddit: [5] http://goo.gl/Hm7Zbl
     Original: [6] http://goo.gl/HrI0L6

   * wreq: a capable new HTTP client library
     Domain: serpentine.com, Score: 121, Comments: 128
     On Reddit: [7] http://goo.gl/kUZp4s
     Original: [8] http://goo.gl/y8QFpR

   * Applicative became a superclass of Monad
     Domain: ghc.haskell.org, Score: 94, Comments: 46
     On Reddit: [9] http://goo.gl/0OIiPz
     Original: [10] http://goo.gl/DKCUsD

   * Open Sourced! Cryptol: A Domain Specific Language for
     Specifying Cryptographic Algorithms
     Domain: cryptol.net, Score: 91, Comments: 7
     On Reddit: [11] http://goo.gl/32oaZd
     Original: [12] http://goo.gl/30Y9g0

   * Model-view-controller, Haskell-style
     Domain: haskellforall.com, Score: 81, Comments: 55
     On Reddit: [13] http://goo.gl/yJH5Ck
     Original: [14] http://goo.gl/pjqFPN

   * Lenses don't compose backwards.
     Domain: self.haskell, Score: 73, Comments: 35
     On Reddit: [15] http://goo.gl/p9e9v8
     Original: [16] http://goo.gl/p9e9v8

   * 14 Haskell Projects accepted for Google Summer of Code
     Domain: google-melange.com, Score: 59, Comments: 28
     On Reddit: [17] http://goo.gl/bw3jrU
     Original: [18] http://goo.gl/O91dDJ

   * New issue of The Monad Reader (#23)
     Domain: themonadreader.wordpress.com, Score: 48, Comments: 11
     On Reddit: [19] http://goo.gl/PgFaAg
     Original: [20] http://goo.gl/M62yM8

   * Lens from the ground up
     Domain: mth.io, Score: 44, Comments: 25
     On Reddit: [21] http://goo.gl/7hb2dZ
     Original: [22] http://goo.gl/W2C4x2

   * Lenses You Can Make at Home
     Domain: duplode.github.io, Score: 40, Comments: 17
     On Reddit: [23] http://goo.gl/5Fx3re
     Original: [24] http://goo.gl/qs2nbt

Top StackOverflow Questions

   * How do experienced Haskell developers approach laziness at *design*
time?
     votes: 26, answers: 1
     Read on SO: [25] http://goo.gl/obf2MG

   * Lax monoidal functors with a different monoidal structure
     votes: 14, answers: 3
     Read on SO: [26] http://goo.gl/gR954y

   * Maximizing Haskell loop performance with GHC
     votes: 13, answers: 2
     Read on SO: [27] http://goo.gl/TNaeB7

   * What does it mean that the semantics (of Haskell) are affected by the
     inferred types (of return type polymorphism)?
     votes: 12, answers: 2
     Read on SO: [28] http://goo.gl/e702Su

   * Write a parallel array Haskell expression once, run on
     CPUs & GPUs with repa and accelerate
     votes: 10, answers: 2
     Read on SO: [29] http://goo.gl/gvSnV8

   * Best way to save 10 GB vector to disk in Haskell
     votes: 9, answers: 3
     Read on SO: [30] http://goo.gl/6SjJeG

   * What is the purpose of the `Typeable (* -> Constraint) Monoid`
instance?
     votes: 9, answers: 1
     Read on SO: [31] http://goo.gl/QeLSHm

Until next time,
[32]+Daniel Santa Cruz

References

   1. http://dev.stephendiehl.com/hask
   2.
http://www.reddit.com/r/haskell/comments/23srcm/what_i_wish_i_knew_when_learning_haskell_20/
   3. http://blog.johantibell.com/2014/04/announcing-cabal-120.html
   4. http://www.reddit.com/r/haskell/comments/23i6ih/announcing_cabal_120/
   5. http://ro-che.info/articles/2014-04-24-lens-unidiomatic.html
   6.
http://www.reddit.com/r/haskell/comments/23uzpg/lens_is_unidiomatic_haskell/
   7. http://www.serpentine.com/wreq/
   8.
http://www.reddit.com/r/haskell/comments/23q8kc/wreq_a_capable_new_http_client_library/
   9.
https://ghc.haskell.org/trac/ghc/browser/ghc/libraries/base/GHC/Base.lhs?rev=88c9403264950326e39a05f262bbbb069cf12977#L382
  10.
http://www.reddit.com/r/haskell/comments/23ob5a/applicative_became_a_superclass_of_monad/
  11. http://cryptol.net/index.html
  12.
http://www.reddit.com/r/haskell/comments/23w3su/open_sourced_cryptol_a_domain_specific_language/
  13.
http://www.haskellforall.com/2014/04/model-view-controller-haskell-style.html
  14.
http://www.reddit.com/r/haskell/comments/2407hs/modelviewcontroller_haskellstyle/
  15.
http://www.reddit.com/r/haskell/comments/23x3f3/lenses_dont_compose_backwards/
  16.
http://www.reddit.com/r/haskell/comments/23x3f3/lenses_dont_compose_backwards/
  17. http://www.google-melange.com/gsoc/projects/list/google/gsoc2014
  18.
http://www.reddit.com/r/haskell/comments/23mfwj/14_haskell_projects_accepted_for_google_summer_of/
  19. http://themonadreader.wordpress.com/2014/04/23/issue-23/
  20.
http://www.reddit.com/r/haskell/comments/23u25r/new_issue_of_the_monad_reader_23/
  21. http://mth.io/talks/lens-from-the-ground-up/
  22.
http://www.reddit.com/r/haskell/comments/23z5xb/lens_from_the_ground_up/
  23. http://duplode.github.io/posts/lenses-you-can-make-at-home.html
  24.
http://www.reddit.com/r/haskell/comments/241aec/lenses_you_can_make_at_home/
  25.
http://stackoverflow.com/questions/23280936/how-do-experienced-haskell-developers-approach-laziness-at-design-time
  26.
http://stackoverflow.com/questions/23316255/lax-monoidal-functors-with-a-different-monoidal-structure
  27.
http://stackoverflow.com/questions/23315001/maximizing-haskell-loop-performance-with-ghc
  28.
http://stackoverflow.com/questions/23282921/what-does-it-mean-that-the-semantics-of-haskell-are-affected-by-the-inferred-t
  29.
http://stackoverflow.com/questions/23202145/write-a-parallel-array-haskell-expression-once-run-on-cpus-gpus-with-repa-and
  30.
http://stackoverflow.com/questions/23247289/best-way-to-save-10-gb-vector-to-disk-in-haskell
  31.
http://stackoverflow.com/questions/23277838/what-is-the-purpose-of-the-typeable-constraint-monoid-instance
  32. https://plus.google.com/105107667630152149014/about
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