Welcome to issue 315 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers from January 4 to 17, 2015 Quotes of the Week * mpickering: When is the right time to use Data.ByteString.Char8? edwardk: mpickering: some time around 1980 * tpolecat: any lecture by conal elliott has that flavor. he is the bob ross of functional programming. Top Reddit Stories * Write You a Haskell Domain: dev.stephendiehl.com, Score: 280, Comments: 24 Original: [1] http://goo.gl/isSXWc On Reddit: [2] http://goo.gl/kOevyS * Announcing LTS Haskell 1.0 Domain: fpcomplete.com, Score: 87, Comments: 14 Original: [3] http://goo.gl/QW25bK On Reddit: [4] http://goo.gl/PlWgfm * MSFT open sources production serialization system written partially in Haskell Domain: blog.nullspace.io, Score: 83, Comments: 6 Original: [5] http://goo.gl/SDm7i1 On Reddit: [6] http://goo.gl/wljTKD * haskell-emacs - Write Emacs extensions in Haskell Domain: github.com, Score: 64, Comments: 3 Original: [7] http://goo.gl/NkK9FE On Reddit: [8] http://goo.gl/75zURt * The Type Theory Podcast, Episode 3: Dan Licata on Homotopy Type Theory Domain: typetheorypodcast.com, Score: 58, Comments: 17 Original: [9] http://goo.gl/z30wH5 On Reddit: [10] http://goo.gl/5KDPNu * Cabal 1.22 and cabal-install 1.22 Domain: groups.google.com, Score: 54, Comments: 3 Original: [11] http://goo.gl/WdxPu0 On Reddit: [12] http://goo.gl/ih07XV * [Haskell-cafe] The amount of CPP we have to use is getting out of hand Domain: haskell.org, Score: 51, Comments: 94 Original: [13] http://goo.gl/0OYZ7C On Reddit: [14] http://goo.gl/4QCAIc * Boston Haskell lightning talks: Rust, Phantoms, ATS, Freezing, Music, and Code reuse Domain: self.haskell, Score: 50, Comments: 8 Original: [15] http://goo.gl/TAjkMi On Reddit: [16] http://goo.gl/TAjkMi * Haskell for all: total-1.0.0: Exhaustive pattern matching using traversals, prisms, and lenses Domain: haskellforall.com, Score: 47, Comments: 9 Original: [17] http://goo.gl/TJDioE On Reddit: [18] http://goo.gl/sx7aMu * Mutation analysis for Haskell (alpha) Domain: self.haskell, Score: 46, Comments: 9 Original: [19] http://goo.gl/MByMzL On Reddit: [20] http://goo.gl/MByMzL * Simple Algebraic Data Types by Bartosz Milewski Domain: bartoszmilewski.com, Score: 45, Comments: 1 Original: [21] http://goo.gl/Ns3UjL On Reddit: [22] http://goo.gl/uuqCt2 * The Frank programming language Domain: homepages.inf.ed.ac.uk, Score: 42, Comments: 29 Original: [23] http://goo.gl/msxrp5 On Reddit: [24] http://goo.gl/0NPQYY * GHC Weekly News - 2015/01/07 Domain: ghc.haskell.org, Score: 42, Comments: 3 Original: [25] http://goo.gl/HVsDLU On Reddit: [26] http://goo.gl/JiMf4b * The Rust community grapples with the menace of ORPHAN INSTANCES Domain: discuss.rust-lang.org, Score: 42, Comments: 19 Original: [27] http://goo.gl/HIl68S On Reddit: [28] http://goo.gl/dUWa48 * The state and future of supercompilation in GHC. Domain: self.haskell, Score: 39, Comments: 10 Original: [29] http://goo.gl/e9FDLV On Reddit: [30] http://goo.gl/e9FDLV Top StackOverflow Questions * Implementation of null function votes: 18, answers: 2 Read on SO: [31] http://goo.gl/cVqJa3 * What is the type of this self-applying factorial function? votes: 17, answers: 3 Read on SO: [32] http://goo.gl/vQaeQ0 * Haskell fast concurrent queue votes: 17, answers: 3 Read on SO: [33] http://goo.gl/HdAlul * Ghc: partially compile Haskell code? votes: 13, answers: 1 Read on SO: [34] http://goo.gl/hS2QNQ * What is the type of return 5 in Haskell when no context is given? votes: 12, answers: 1 Read on SO: [35] http://goo.gl/IC08Sk * Is it possible to write fmap for this data type involving a type family? votes: 11, answers: 1 Read on SO: [36] http://goo.gl/6V5Mps * How to get cabal and nix work together votes: 11, answers: 1 Read on SO: [37] http://goo.gl/TOXNDv * What is the most general way to compute the depth of a tree with something like a fold? votes: 8, answers: 2 Read on SO: [38] http://goo.gl/vlcioF * What is exactly an indexed functor in Haskell and what are its usages? votes: 8, answers: 1 Read on SO: [39] http://goo.gl/10PK8U * Functor instance for generic polymorphic ADTs in Haskell? votes: 8, answers: 2 Read on SO: [40] http://goo.gl/Oh0uFp * Finite State Transducers in Haskell? votes: 7, answers: 1 Read on SO: [41] http://goo.gl/gu80ZL * Is it possible to encode a generic “lift” function in Haskell? votes: 7, answers: 2 Read on SO: [42] http://goo.gl/R9B8N5 * Haskell Expression Equivalents votes: 6, answers: 1 Read on SO: [43] http://goo.gl/t54YiS Until next time, [44]+Daniel Santa Cruz References 1. http://dev.stephendiehl.com/fun/ 2. http://www.reddit.com/r/haskell/comments/2regln/write_you_a_haskell/ 3. https://www.fpcomplete.com/blog/2015/01/announcing-lts-haskell-1-0 4. http://www.reddit.com/r/haskell/comments/2rapgt/announcing_lts_haskell_10/ 5. http://blog.nullspace.io/bond-oss.html 6. http://www.reddit.com/r/haskell/comments/2rxkmk/msft_open_sources_production... 7. https://github.com/knupfer/haskell-emacs 8. http://www.reddit.com/r/haskell/comments/2sdvyu/haskellemacs_write_emacs_ext... 9. http://typetheorypodcast.com/2015/01/episode-3-dan-licata-on-homotopy-type-t... 10. http://www.reddit.com/r/haskell/comments/2rnumy/the_type_theory_podcast_epis... 11. https://groups.google.com/forum/#!msg/haskell-cafe/rRbP9oJjOBc/J8lf_sGVl_oJ 12. http://www.reddit.com/r/haskell/comments/2rcuak/cabal_122_and_cabalinstall_1... 13. https://www.haskell.org/pipermail/haskell-cafe/2015-January/117683.html 14. http://www.reddit.com/r/haskell/comments/2shv2d/haskellcafe_the_amount_of_cp... 15. http://www.reddit.com/r/haskell/comments/2sn8la/boston_haskell_lightning_tal... 16. http://www.reddit.com/r/haskell/comments/2sn8la/boston_haskell_lightning_tal... 17. http://www.haskellforall.com/2015/01/total-100-exhaustive-pattern-matching.h... 18. http://www.reddit.com/r/haskell/comments/2s1tfx/haskell_for_all_total100_exh... 19. http://www.reddit.com/r/haskell/comments/2rj5sw/mutation_analysis_for_haskel... 20. http://www.reddit.com/r/haskell/comments/2rj5sw/mutation_analysis_for_haskel... 21. http://bartoszmilewski.com/2015/01/13/simple-algebraic-data-types/ 22. http://www.reddit.com/r/haskell/comments/2sbl93/simple_algebraic_data_types_... 23. http://homepages.inf.ed.ac.uk/slindley/papers/frankly-draft-march2014.pdf 24. http://www.reddit.com/r/haskell/comments/2rao0t/the_frank_programming_langua... 25. https://ghc.haskell.org/trac/ghc/blog/weekly20150107 26. http://www.reddit.com/r/haskell/comments/2rq6zc/ghc_weekly_news_20150107/ 27. http://discuss.rust-lang.org/t/orphan-rules/1322/4 28. http://www.reddit.com/r/haskell/comments/2shyfj/the_rust_community_grapples_... 29. http://www.reddit.com/r/haskell/comments/2s97d0/the_state_and_future_of_supe... 30. http://www.reddit.com/r/haskell/comments/2s97d0/the_state_and_future_of_supe... 31. http://stackoverflow.com/questions/27941690/implementation-of-null-function 32. http://stackoverflow.com/questions/27814714/what-is-the-type-of-this-self-ap... 33. http://stackoverflow.com/questions/27933941/haskell-fast-concurrent-queue 34. http://stackoverflow.com/questions/27780282/ghc-partially-compile-haskell-co... 35. http://stackoverflow.com/questions/27932794/what-is-the-type-of-return-5-in-... 36. http://stackoverflow.com/questions/27936725/is-it-possible-to-write-fmap-for... 37. http://stackoverflow.com/questions/27968909/how-to-get-cabal-and-nix-work-to... 38. http://stackoverflow.com/questions/27769688/what-is-the-most-general-way-to-... 39. http://stackoverflow.com/questions/27771474/what-is-exactly-an-indexed-funct... 40. http://stackoverflow.com/questions/27856974/functor-instance-for-generic-pol... 41. http://stackoverflow.com/questions/27997155/finite-state-transducers-in-hask... 42. http://stackoverflow.com/questions/28003135/is-it-possible-to-encode-a-gener... 43. http://stackoverflow.com/questions/27761821/haskell-expression-equivalents 44. https://plus.google.com/105107667630152149014/about