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 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_serialization_system/

7. https://github.com/knupfer/haskell-emacs

8. http://www.reddit.com/r/haskell/comments/2sdvyu/haskellemacs_write_emacs_extensions_in_haskell/

9. http://typetheorypodcast.com/2015/01/episode-3-dan-licata-on-homotopy-type-theory/

10. http://www.reddit.com/r/haskell/comments/2rnumy/the_type_theory_podcast_episode_3_dan_licata_on/

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_122/

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_cpp_we_have_to_use_is/

15. http://www.reddit.com/r/haskell/comments/2sn8la/boston_haskell_lightning_talks_rust_phantoms_ats/

16. http://www.reddit.com/r/haskell/comments/2sn8la/boston_haskell_lightning_talks_rust_phantoms_ats/

17. http://www.haskellforall.com/2015/01/total-100-exhaustive-pattern-matching.html

18. http://www.reddit.com/r/haskell/comments/2s1tfx/haskell_for_all_total100_exhaustive_pattern/

19. http://www.reddit.com/r/haskell/comments/2rj5sw/mutation_analysis_for_haskell_alpha/

20. http://www.reddit.com/r/haskell/comments/2rj5sw/mutation_analysis_for_haskell_alpha/

21. http://bartoszmilewski.com/2015/01/13/simple-algebraic-data-types/

22. http://www.reddit.com/r/haskell/comments/2sbl93/simple_algebraic_data_types_by_bartosz_milewski/

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_language/

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_with_the_menace_of/

29. http://www.reddit.com/r/haskell/comments/2s97d0/the_state_and_future_of_supercompilation_in_ghc/

30. http://www.reddit.com/r/haskell/comments/2s97d0/the_state_and_future_of_supercompilation_in_ghc/

31. http://stackoverflow.com/questions/27941690/implementation-of-null-function

32. http://stackoverflow.com/questions/27814714/what-is-the-type-of-this-self-applying-factorial-function

33. http://stackoverflow.com/questions/27933941/haskell-fast-concurrent-queue

34. http://stackoverflow.com/questions/27780282/ghc-partially-compile-haskell-code

35. http://stackoverflow.com/questions/27932794/what-is-the-type-of-return-5-in-haskell-when-no-context-is-given

36. http://stackoverflow.com/questions/27936725/is-it-possible-to-write-fmap-for-this-data-type-involving-a-type-family

37. http://stackoverflow.com/questions/27968909/how-to-get-cabal-and-nix-work-together

38. http://stackoverflow.com/questions/27769688/what-is-the-most-general-way-to-compute-the-depth-of-a-tree-with-something-like

39. http://stackoverflow.com/questions/27771474/what-is-exactly-an-indexed-functor-in-haskell-and-what-are-its-usages

40. http://stackoverflow.com/questions/27856974/functor-instance-for-generic-polymorphic-adts-in-haskell

41. http://stackoverflow.com/questions/27997155/finite-state-transducers-in-haskell

42. http://stackoverflow.com/questions/28003135/is-it-possible-to-encode-a-generic-lift-function-in-haskell

43. http://stackoverflow.com/questions/27761821/haskell-expression-equivalents

44. https://plus.google.com/105107667630152149014/about