Welcome to issue 254 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of December 02, 2012 to January 05, 2013. As some of you might have noticed, there has been an interruption in the scheduled transmission of the newsletter. I have, over the past few weeks, completed a move to NYC! It has been wonderful to meet many in the community at the Haskell NYC meetups. Here is to a great year for our cherised community. Let's get things started out the right way, with a litte "Lambda Style" :-) [1] http://goo.gl/nQYdp Quotes of the Week * GuySteele: Some people prefer not to commingle the functional, lambda-calculus part of a language with the parts that do side effects. It seems they believe in the separation of Church and state. * edwardk: type level ieee floats are a crime against nature. i had to implement them in c++ for template meta programming once. never ever again * acowley: (regarding Proxy) Haven't you ever wanted to put something in a box and never think about it? elliott: children * merijn: xenocons: I spend the entire week grading FP homework, I think it's impossible for you to surprise me :p merijn: That's confusing :< * andr00: Today's software engineering word is "farpotshket." This is a Yiddish word meaning, "broken, because someone tried to fix it." * dmwit: I know, I know. "0, 1, many". But then I also write most of my programs in a language whose type system has 4 levels. Four! Is that even a number?? * aristid: a dubious motivation IMHO edwardk: i've had worse =P * ziarkaen: I'm thinking I can kill two birds with one stone by learning Haskell while producing a website, but all the birds are still alive at the moment. * ion: monad.bind = function (func, args) { return func.apply(undefined, [value].concat(Array.prototype.slice.apply(args || []))); }; is idiomatic JavaScript? * beaky: if stacks are recursion, what are queues? Hafydd: Procrastination. * elliott: I think lens is the first library I've seen that promises letting you write abstract totally-inefficient-looking compositional code and getting reliably good compilation which has actually delivered on that promise. * elliott: I didn't say half the things I said. * shachaf: The two-letter and three-letter identifiers are for edwardk's libraries. The one-letter identifiers are for his actual code. elliott: edwardk has non-library code? * neutrino: in many ways, Haskell is like this primodial soup out of which other languages end up springing * mm_freak: bruce schneier is an endofunctor that turns all automorphisms into identities * roconnor: where are all the category theoriest? why don't they already have all the answers for us? edwardk: roconnor: this is the point in your career where you look around for the cavalry and realize that you're it ;) * cmccann: multi-letter type variables is an experimental new extension * elliott: I can't remember the last time I wrote any Haskell without an evil grin. * neutrino: when you're told you have to use javascript, the viable alternative always remains in seppuku. and it's much more honorable. * shachaf: chrisdone: Please make Author not mandatory. [on hpaste] donri: shachaf: just write "not shachaf" and no one will ever know it's you * tac: If you're not part of the solution, you're part of the precipitate * cmccann: some people blame themselves, some people blame the language, but the people who really know what they're doing blame shachaf. Top Reddit Stories * The end of an era, and the dawn of a new one Domain: haskell.org, Score: 148, Comments: 32 On Reddit: [2] http://goo.gl/fiyVt Original: [3] http://goo.gl/dlxsF * Simon Peyton-Jones invests in FP Complete Domain: fpcomplete.com, Score: 92, Comments: 15 On Reddit: [4] http://goo.gl/nPTk1 Original: [5] http://goo.gl/wzfpP * 24 Days of Hackage - Thank YOU! Domain: ocharles.org.uk, Score: 88, Comments: 12 On Reddit: [6] http://goo.gl/2yodj Original: [7] http://goo.gl/hSsH6 * Heist 0.10...now with a >3000x performance improvement Domain: snapframework.com, Score: 81, Comments: 38 On Reddit: [8] http://goo.gl/p7R7u Original: [9] http://goo.gl/znugn * 24 Days of Hackage: EKG Domain: ocharles.org.uk, Score: 68, Comments: 15 On Reddit: [10] http://goo.gl/ltPb1 Original: [11] http://goo.gl/UeYOA * pipes-3.0: Simpler, unified API Domain: haskellforall.com, Score: 64, Comments: 71 On Reddit: [12] http://goo.gl/ZSVtT Original: [13] http://goo.gl/6Yt01 * Hoodle : Pen note-taking program written in haskell Domain: youtube.com, Score: 64, Comments: 21 On Reddit: [14] http://goo.gl/aJ9G9 Original: [15] http://goo.gl/GsZ85 * 24 Days of Hackage: lens Domain: ocharles.org.uk, Score: 62, Comments: 46 On Reddit: [16] http://goo.gl/71HbV Original: [17] http://goo.gl/L78Hp * Cartesian Closed Comic #19: Facebook Domain: ro-che.info, Score: 61, Comments: 8 On Reddit: [18] http://goo.gl/LKqzz Original: [19] http://goo.gl/tSrjJ * Announcing: Snap Framework v0.10 Domain: snapframework.com, Score: 61, Comments: 11 On Reddit: [20] http://goo.gl/TibIw Original: [21] http://goo.gl/Nm98e * Surprises of the Haskell module system (part 1) Domain: ro-che.info, Score: 57, Comments: 11 On Reddit: [22] http://goo.gl/tOiiK Original: [23] http://goo.gl/vLEZP * 24 Days of Hackage: configurator Domain: ocharles.org.uk, Score: 53, Comments: 7 On Reddit: [24] http://goo.gl/jFKt2 Original: [25] http://goo.gl/nu2zj * Fay :: Haskell -> JavaScript Domain: fay-lang.org, Score: 52, Comments: 14 On Reddit: [26] http://goo.gl/wAH7C Original: [27] http://goo.gl/uitoD * Announcing: Clay, a CSS preprocessor as a Haskell EDSL. Domain: sebastiaanvisser.github.com, Score: 52, Comments: 53 On Reddit: [28] http://goo.gl/1ej1n Original: [29] http://goo.gl/bWfU2 * 24 Days of Hackage: base Domain: ocharles.org.uk, Score: 51, Comments: 10 On Reddit: [30] http://goo.gl/e5gLp Original: [31] http://goo.gl/7MY8o * Haskell for all: The Continuation Monad Domain: haskellforall.com, Score: 51, Comments: 42 On Reddit: [32] http://goo.gl/YKDOo Original: [33] http://goo.gl/zJ42x * ANNNOUNCE: lens 3.7 released Domain: haskell.org, Score: 50, Comments: 9 On Reddit: [34] http://goo.gl/FecK0 Original: [35] http://goo.gl/n4tR0 * 24 Days of Hackage: optparse-applicative Domain: ocharles.org.uk, Score: 50, Comments: 21 On Reddit: [36] http://goo.gl/JyFVh Original: [37] http://goo.gl/PP4CX * 24 Days of Hackage: snap Domain: ocharles.org.uk, Score: 50, Comments: 35 On Reddit: [38] http://goo.gl/9Wp3q Original: [39] http://goo.gl/WlHlU * What doesn't Haskell do well? Domain: self.haskell, Score: 47, Comments: 153 On Reddit: [40] http://goo.gl/VRJMn Original: [41] http://goo.gl/VRJMn * 24 Days of Hackage: criterion Domain: ocharles.org.uk, Score: 46, Comments: 10 On Reddit: [42] http://goo.gl/wYrdm Original: [43] http://goo.gl/rYT9C * Some specific thoughts on why using Haskell makes you a better programmer. Domain: dubhrosa.blogspot.co.uk, Score: 46, Comments: 30 On Reddit: [44] http://goo.gl/dN1Zd Original: [45] http://goo.gl/DDNuQ * Growing Haskell Platform Domain: mtnviewmark.wordpress.com, Score: 43, Comments: 16 On Reddit: [46] http://goo.gl/jNefn Original: [47] http://goo.gl/a5udB * 24 Days of Hackage: text Domain: ocharles.org.uk, Score: 43, Comments: 21 On Reddit: [48] http://goo.gl/3VmmH Original: [49] http://goo.gl/13MOc Top StackOverflow Questions * What's the absurd function in Data.Void useful for? votes: 34, answers: 5 Read on SO: [50] http://goo.gl/ny4gh * Benefit of avoiding multiple list traversals votes: 27, answers: 4 Read on SO: [51] http://goo.gl/Z6DNg * Images in Haddock documentation votes: 22, answers: 2 Read on SO: [52] http://goo.gl/7tFgE * Idiomatic option pricing and risk using Repa parallel arrays votes: 22, answers: 1 Read on SO: [53] http://goo.gl/Ih9cn * How much memory does a thunk use? votes: 21, answers: 2 Read on SO: [54] http://goo.gl/VkdIX * Can I constrain a type family? votes: 20, answers: 2 Read on SO: [55] http://goo.gl/0kBEU * How to write platform-independent code in Haskell (ghc) votes: 18, answers: 1 Read on SO: [56] http://goo.gl/13bEB * Play a wav file with Haskell votes: 17, answers: 3 Read on SO: [57] http://goo.gl/sKpgf * Why are difference lists more efficient than regular concatenation? votes: 16, answers: 2 Read on SO: [58] http://goo.gl/GCVpe * GUI tools that are actively developed and well documented for Haskell votes: 15, answers: 2 Read on SO: [59] http://goo.gl/M2L0l * What are the adjoint functor pairs corresponding to common monads in Haskell? votes: 15, answers: 2 Read on SO: [60] http://goo.gl/UnUik Until next time, +Daniel Santa Cruz https://plus.google.com/105107667630152149014/about References 1. http://www.youtube.com/watch?v=Ci48kqp11F8 2. http://www.haskell.org/pipermail/haskell-cafe/2012-December/105041.html 3. http://www.reddit.com/r/haskell/comments/14bvtz/the_end_of_an_era_and_the_da... 4. http://fpcomplete.com/why-im-investing-in-fp-complete/ 5. http://www.reddit.com/r/haskell/comments/15wc7s/simon_peytonjones_invests_in... 6. http://ocharles.org.uk/blog/posts/2012-12-24-24-days-of-hackage.html 7. http://www.reddit.com/r/haskell/comments/15e0nz/24_days_of_hackage_thank_you... 8. http://snapframework.com/blog/2012/12/9/heist-0.10-released 9. http://www.reddit.com/r/haskell/comments/14kjct/heist_010now_with_a_3000x_pe... 10. http://ocharles.org.uk/blog/posts/2012-12-11-24-day-of-hackage-ekg.html 11. http://www.reddit.com/r/haskell/comments/14ovdp/24_days_of_hackage_ekg/ 12. http://www.haskellforall.com/2012/12/pipes-30-simpler-unified-api.html 13. http://www.reddit.com/r/haskell/comments/14qe8b/pipes30_simpler_unified_api/ 14. http://www.youtube.com/watch?v=Z2wzpyxsVSU 15. http://www.reddit.com/r/haskell/comments/14seiv/hoodle_pen_notetaking_progra... 16. http://ocharles.org.uk/blog/posts/2012-12-09-24-days-of-hackage-lens.html 17. http://www.reddit.com/r/haskell/comments/14kbbi/24_days_of_hackage_lens/ 18. http://ro-che.info/ccc/19.html 19. http://www.reddit.com/r/haskell/comments/145cra/cartesian_closed_comic_19_fa... 20. http://snapframework.com/blog/2012/12/10/snap-0.10-released 21. http://www.reddit.com/r/haskell/comments/14lrlr/announcing_snap_framework_v0... 22. http://ro-che.info/articles/2012-12-25-haskell-module-system-p1.html 23. http://www.reddit.com/r/haskell/comments/15fnrx/surprises_of_the_haskell_mod... 24. http://ocharles.org.uk/blog/posts/2012-12-21-24-days-of-hackage-configurator... 25. http://www.reddit.com/r/haskell/comments/158svo/24_days_of_hackage_configura... 26. http://fay-lang.org/ 27. http://www.reddit.com/r/haskell/comments/14dxru/fay_haskell_javascript/ 28. http://sebastiaanvisser.github.com/clay/ 29. http://www.reddit.com/r/haskell/comments/15aoif/announcing_clay_a_css_prepro... 30. http://ocharles.org.uk/blog/posts/2012-12-23-24-days-of-hackage-base.html 31. http://www.reddit.com/r/haskell/comments/15c0jm/24_days_of_hackage_base/ 32. http://www.haskellforall.com/2012/12/the-continuation-monad.html 33. http://www.reddit.com/r/haskell/comments/15ogxe/haskell_for_all_the_continua... 34. http://www.haskell.org/pipermail/haskell/2012-December/023598.html 35. http://www.reddit.com/r/haskell/comments/14fw7l/annnounce_lens_37_released/ 36. http://ocharles.org.uk/blog/posts/2012-12-17-24-days-of-hackage-optparse-app... 37. http://www.reddit.com/r/haskell/comments/150iem/24_days_of_hackage_optparsea... 38. http://ocharles.org.uk/blog/posts/2012-12-19-24-days-of-hackage-snap.html 39. http://www.reddit.com/r/haskell/comments/154i72/24_days_of_hackage_snap/ 40. file://localhost/r/haskell/comments/14nj0r/what_doesnt_haskell_do_well/ 41. http://www.reddit.com/r/haskell/comments/14nj0r/what_doesnt_haskell_do_well/ 42. http://ocharles.org.uk/blog/posts/2012-12-18-24-days-of-hackage-criterion.ht... 43. 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http://stackoverflow.com/questions/14133121/can-i-constrain-a-type-family 56. http://stackoverflow.com/questions/13799199/how-to-write-platform-independen... 57. http://stackoverflow.com/questions/14005592/play-a-wav-file-with-haskell 58. http://stackoverflow.com/questions/13879260/why-are-difference-lists-more-ef... 59. http://stackoverflow.com/questions/13887213/gui-tools-that-are-actively-deve... 60. http://stackoverflow.com/questions/13937289/what-are-the-adjoint-functor-pai...