Welcome to issue 238 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of July 22 to 28, 2012. Quotes of the Week * clsmith: i find programming in haskell is mostly about reinventing things and then discovering them in Prelude * EvanR: ruby, cobol of the 2000s * monochrom: "customers who used == also liked: foldr, map, Ord, continuation passing style" * jmcarthur: we calmly talk trolls to death Top Reddit Stories * Haskell logo QR code Domain: self.haskell, Score: 44, Comments: 5 On Reddit: [1] http://goo.gl/DuSSU Original: [2] http://goo.gl/DuSSU * In Praise of EitherT Domain: ocharles.org.uk, Score: 43, Comments: 9 On Reddit: [3] http://goo.gl/V2R9B Original: [4] http://goo.gl/M7rTb * The must-know list of packages on hackage? Domain: self.haskell, Score: 39, Comments: 29 On Reddit: [5] http://goo.gl/N7i6J Original: [6] http://goo.gl/N7i6J * SmartCheck: a better QuickCheck for testing algebraic data and generalizing counterexamples found Domain: leepike.wordpress.com, Score: 39, Comments: 6 On Reddit: [7] http://goo.gl/ENFxH Original: [8] http://goo.gl/SZMCG * Compile Haskell (Fay) to Javascript using Javascript compiled with GHCJS Domain: ghcjs.github.com, Score: 36, Comments: 8 On Reddit: [9] http://goo.gl/YOSuG Original: [10] http://goo.gl/d7Af4 * Programming in Fay - Simple example Domain: youtube.com, Score: 30, Comments: 17 On Reddit: [11] http://goo.gl/Ieswf Original: [12] http://goo.gl/4DcLd * Flexibly-Phased Constraints in Haskell Domain: jonmsterling.com, Score: 28, Comments: 19 On Reddit: [13] http://goo.gl/uvYY4 Original: [14] http://goo.gl/3cRD4 * Do you use Haskell in business? What do you use it for? Domain: self.haskell, Score: 24, Comments: 57 On Reddit: [15] http://goo.gl/AcGlL Original: [16] http://goo.gl/AcGlL * ANN: CmdTheLine 0.2 released -- with new tutorial. Domain: elifrey.com, Score: 23, Comments: 11 On Reddit: [17] http://goo.gl/yezpc Original: [18] http://goo.gl/cM9kZ * State of the Shelly (Haskell scripting lib) Domain: yesodweb.com, Score: 23, Comments: 1 On Reddit: [19] http://goo.gl/siupj Original: [20] http://goo.gl/FyrDC * Hackage b0rked for cabal 0.10.2 Domain: self.haskell, Score: 22, Comments: 4 On Reddit: [21] http://goo.gl/HzgX8 Original: [22] http://goo.gl/HzgX8 * Pipes to Conduits part 0: Combining Functors Domain: unknownparallel.wordpress.com, Score: 22, Comments: 18 On Reddit: [23] http://goo.gl/sF95u Original: [24] http://goo.gl/Jepr5 * Deconstraining DSLs [PDF] Domain: doc.ic.ac.uk, Score: 19, Comments: 2 On Reddit: [25] http://goo.gl/Ur7Lz Original: [26] http://goo.gl/E2DhL * What is the reason for Haskell's cabal package problems? Domain: self.haskell, Score: 17, Comments: 41 On Reddit: [27] http://goo.gl/O0x9z Original: [28] http://goo.gl/O0x9z * Pipes to Conduits part 4: Recovering from Abort Domain: unknownparallel.wordpress.com, Score: 16, Comments: On Reddit: [29] http://goo.gl/tr9Jy Original: [30] http://goo.gl/XbAUR * Pipes to Conduits part 1: Yield and Await Domain: unknownparallel.wordpress.com, Score: 15, Comments: 5 On Reddit: [31] http://goo.gl/KV0io Original: [32] http://goo.gl/GuFqX * Pipes to Conduits part 2: Upstream Results Domain: unknownparallel.wordpress.com, Score: 15, Comments: 9 On Reddit: [33] http://goo.gl/ONYzN Original: [34] http://goo.gl/Tf3Si * Instance Templates: a proposed feature to change type class hierarchies without breaking compatibility Domain: github.com, Score: 15, Comments: 6 On Reddit: [35] http://goo.gl/7Jx8c Original: [36] http://goo.gl/LG1YK * Categories over pairs of types Domain: twanvl.nl, Score: 15, Comments: 1 On Reddit: [37] http://goo.gl/8ee77 Original: [38] http://goo.gl/jxLPR * Pipes to Conduits part 3: Abort Domain: unknownparallel.wordpress.com, Score: 14, Comments: 12 On Reddit: [39] http://goo.gl/IZbij Original: [40] http://goo.gl/2kgLg Top StackOverflow Questions * What does “Pure” mean, in the context of programming languages and paradigms? votes: 21, answers: 2 Read on SO: [41] http://goo.gl/a0IUe * Can a thunk be duplicated to improve memory performance? votes: 17, answers: 3 Read on SO: [42] http://goo.gl/rznKJ * What's the current status of restricted monads? votes: 14, answers: 1 Read on SO: [43] http://goo.gl/UnMbE * Is it good style to use a case expression on an Unit value just to use guards? votes: 13, answers: 3 Read on SO: [44] http://goo.gl/E8xn3 * Temporary namespace/context in Haskell votes: 12, answers: 3 Read on SO: [45] http://goo.gl/AWg4O * Using the LogicT Monad Transformer in Haskell votes: 12, answers: 1 Read on SO: [46] http://goo.gl/DOw0H * Irrefutable pattern does not leak memory in recursion, but why? votes: 11, answers: 1 Read on SO: [47] http://goo.gl/qK7rx * How to determine type of Haskell functions? votes: 11, answers: 3 Read on SO: [48] http://goo.gl/Rn5F7 * Haskell: map runST votes: 9, answers: 3 Read on SO: [49] http://goo.gl/mWnvL * How to play with Control.Monad.Writer in haskell? votes: 9, answers: 1 Read on SO: [50] http://goo.gl/GLTJc Until next time, Daniel Santa Cruz References 1. http://www.reddit.com/r/haskell/comments/xb3ig/haskell_logo_qr_code/ 2. http://www.reddit.com/r/haskell/comments/xb3ig/haskell_logo_qr_code/ 3. http://ocharles.org.uk/blog/posts/2012-07-24-in-praise-of-EitherT.html 4. http://www.reddit.com/r/haskell/comments/x3ikr/in_praise_of_eithert/ 5. http://www.reddit.com/r/haskell/comments/x4g18/the_mustknow_list_of_packages... 6. http://www.reddit.com/r/haskell/comments/x4g18/the_mustknow_list_of_packages... 7. http://leepike.wordpress.com/2012/07/26/smartcheck/ 8. http://www.reddit.com/r/haskell/comments/x7fyt/smartcheck_a_better_quickchec... 9. http://ghcjs.github.com/fay-hello-js.jsexe/ 10. http://www.reddit.com/r/haskell/comments/x43nd/compile_haskell_fay_to_javasc... 11. https://www.youtube.com/watch?v=dhFZ8vx9byc 12. http://www.reddit.com/r/haskell/comments/xbihk/programming_in_fay_simple_exa... 13. http://www.jonmsterling.com/posts/2012-07-22-flexibly-phased-constraints-in-... 14. http://www.reddit.com/r/haskell/comments/wzwda/flexiblyphased_constraints_in... 15. http://www.reddit.com/r/haskell/comments/x8qnh/do_you_use_haskell_in_busines... 16. http://www.reddit.com/r/haskell/comments/x8qnh/do_you_use_haskell_in_busines... 17. http://elifrey.com/2012/07/23/CmdTheLine-Tutorial/ 18. http://www.reddit.com/r/haskell/comments/x0xda/ann_cmdtheline_02_released_wi... 19. http://www.yesodweb.com/blog/2012/07/shelly-update 20. http://www.reddit.com/r/haskell/comments/x9etz/state_of_the_shelly_haskell_s... 21. http://www.reddit.com/r/haskell/comments/x16h7/hackage_b0rked_for_cabal_0102... 22. http://www.reddit.com/r/haskell/comments/x16h7/hackage_b0rked_for_cabal_0102... 23. http://unknownparallel.wordpress.com/2012/07/24/pipes-to-conduits-part-0-com... 24. http://www.reddit.com/r/haskell/comments/x2lao/pipes_to_conduits_part_0_comb... 25. http://www.doc.ic.ac.uk/~wlj05/files/Deconstraining.pdf 26. http://www.reddit.com/r/haskell/comments/x3bta/deconstraining_dsls_pdf/ 27. http://www.reddit.com/r/haskell/comments/x4knd/what_is_the_reason_for_haskel... 28. http://www.reddit.com/r/haskell/comments/x4knd/what_is_the_reason_for_haskel... 29. http://unknownparallel.wordpress.com/2012/07/28/pipes-to-conduits-part-4-rec... 30. http://www.reddit.com/r/haskell/comments/xar9r/pipes_to_conduits_part_4_reco... 31. http://unknownparallel.wordpress.com/2012/07/25/pipes-to-conduits-part-1-yie... 32. http://www.reddit.com/r/haskell/comments/x4si1/pipes_to_conduits_part_1_yiel... 33. http://unknownparallel.wordpress.com/2012/07/26/pipes-and-conduits-part-2-up... 34. http://www.reddit.com/r/haskell/comments/x6w9k/pipes_to_conduits_part_2_upst... 35. https://github.com/mgsloan/instance-templates 36. http://www.reddit.com/r/haskell/comments/x71ll/instance_templates_a_proposed... 37. http://twanvl.nl/blog/haskell/categories-over-pairs-of-types 38. http://www.reddit.com/r/haskell/comments/xab88/categories_over_pairs_of_type... 39. http://unknownparallel.wordpress.com/2012/07/27/pipes-to-conduits-part-3-abo... 40. http://www.reddit.com/r/haskell/comments/x8yx2/pipes_to_conduits_part_3_abor... 41. http://stackoverflow.com/questions/11607927/what-does-pure-mean-in-the-conte... 42. http://stackoverflow.com/questions/11675807/can-a-thunk-be-duplicated-to-imp... 43. http://stackoverflow.com/questions/11599685/whats-the-current-status-of-rest... 44. http://stackoverflow.com/questions/11620649/is-it-good-style-to-use-a-case-e... 45. http://stackoverflow.com/questions/11661963/temporary-namespace-context-in-h... 46. http://stackoverflow.com/questions/11695961/using-the-logict-monad-transform... 47. http://stackoverflow.com/questions/11625840/irrefutable-pattern-does-not-lea... 48. http://stackoverflow.com/questions/11638232/how-to-determine-type-of-haskell... 49. http://stackoverflow.com/questions/11662696/haskell-map-runst 50. http://stackoverflow.com/questions/11684321/how-to-play-with-control-monad-w...