*Top Picks:* - Haskell wins a bumper crop of 18 accepted Google Summer of Code proposals http://www.reddit.com/r/haskell/comments/342rvp/google_summer_of_code_18_pro.... Mentor offers total 44, another thumpin' sign of life. Kudos to Edward Kmett, Johan Tibell, Shachaf Ben-Kiki, and Gershom Bazerman. Gloria Haskella sine labore nulla. - Reddit Haskell celebrates http://www.reddit.com/r/haskell/comments/33wnf1/20k_rhaskell_subscribers_nic... 20k subscribers. It's the 7th largest PL community on reddit https://www.reddit.com/r/programming/wiki/faq#wiki_what_language_reddits_are... after python, javascript, java, php, ruby, c++, in that order. - Matthew Griffith http://mechanical-elephant.com/thoughts/2015-04-20-becoming-productive-in-ha... migrates away from Python: "I do most of my web prototyping in Haskell now." A journey vividly logged and much loved on Hacker News https://news.ycombinator.com/item?id=9431944. And also on Proggit http://www.reddit.com/r/programming/comments/33oyx9/becoming_productive_in_h... and Reddit Haskell http://www.reddit.com/r/haskell/comments/33mnlc/becoming_productive_in_haske... . - A web developer migrates away from Rails to Haskell and explains on HN the 10x advantage https://news.ycombinator.com/item?id=9419601#up_9420448 he reaps. - Fancy Python in Haskell dress? Check out Dogelang http://pyos.github.io/dg/, charmingly defiant: "With Haskell's syntax but none of its type system, dg is the best way to make fans of static typing shut up already." Proggit kibbitzing here http://www.reddit.com/r/programming/comments/33kleg/dg_its_a_python_no_its_a..., HN there https://news.ycombinator.com/item?id=9432383. - Caio Rordrigues copiously illustrates https://github.com/caiorss/Functional-Programming Haskell programming. Pretty: a tax bracket tool https://github.com/caiorss/Functional-Programming#tax-brackets and a coffee shop Point-of-Sale DSL https://github.com/caiorss/Functional-Programming#small-dsl-domain-specific-.... It's almost a whole book! - Christian Marie starts the ball rolling on library cheatsheets https://github.com/anchor/haskell-cheat-sheets/ to guide your way through the jungle of hackage. Moar, moar! http://www.reddit.com/r/haskell/comments/33sc98/haskell_cheat_sheets_for_com... - Got a C library you'd love Haskell bindings for? Remember Ian Ross and his new C2HS release http://haskell.1045720.n5.nabble.com/Haskell-Weekly-News-td5768107.html? Well, Ian's happy http://haskell.1045720.n5.nabble.com/Tutorial-Ideas-td5808049.html to do it for you. Provisos http://www.skybluetrades.net/blog/posts/2015/04/27/c2hs-tutorial-request.htm... apply. - Olle Fredriksson announces a combinator-based Earley parsing library https://github.com/ollef/Earley which accepts context-free but not context-sensitive (monadic parsing) grammars. Discussion https://www.reddit.com/r/haskell/comments/33l9cr/ann_earley_parsing_library/ reveals that "one enormously important difference for this library is that it reports all possible parses." - Another Lennart, last name Spitzner, creates another genie that turns type signatures into programs. Unlike Djinn, Exference http://haskell.1045720.n5.nabble.com/ANN-exference-a-different-djinn-td58079... makes no promises over termination. "Your wish is my command even at the expense of closure." - Like Agda? You can now enjoy the hole-driven development style in Haskell, brought to you courtesy of Mote by Izaak Meckler https://github.com/imeckler/mote. Discussion here https://www.reddit.com/r/haskell/comments/33v4nm/ann_mote_a_tool_bringing_ho... . http://tomassetti.me/an-erd-web-server-generation-entity-diagrams-from-a-tex... - Federico Tomassetti http://tomassetti.me/an-erd-web-server-generation-entity-diagrams-from-a-tex... creates a web-based interface to Andrew Gallant's erd tool https://github.com/BurntSushi/erd. Entity-Relationship Diagrams (ERD) come from the database world and help visualize {one,many} to {one,many} relationships. Federico's web app enables him to use erd everywhere without having to install the tool chain multiple times. - Mark Dominus gives a beginner spin http://blog.plover.com/prog/haskell/monad-search.html to the chestnut of SEND + MORE = MONEY https://en.wikipedia.org/wiki/Verbal_arithmetic. This puzzle site http://programmingpraxis.com/2012/07/31/send-more-money-part-1/ has comparisons with other languages. - Got a number system? Flip it into a data structure https://www.fpcomplete.com/user/edwardk/fibonacci/leonardo. Re-flip it into an efficient search algorithm https://www.fpcomplete.com/user/edwardk/fibonacci/search. Edward Kmett shows you how. Respective discussion here http://www.reddit.com/r/haskell/comments/342s31/edward_kmett_leonardo_random... and here http://www.reddit.com/r/haskell/comments/346b6t/edward_kmett_openended_fibon... . *In Memoriam* - A key founder of Haskell, Professor Paul Hudak, completed http://yaledailynews.com/blog/2015/04/30/hudak-spirited-saybrugian-and-cs-pr... his end-of-life plan http://www.caringbridge.org/visit/hudak/journal/view/id/5538f5cea589b4216c04... after a five-year encounter with leukemia. He stays https://news.ycombinator.com/item?id=9431017 in the thoughts https://news.ycombinator.com/item?id=9465999 of all http://www.reddit.com/r/haskell/comments/33oe4b/holding_on_and_letting_go/ who cherish http://www.reddit.com/r/haskell/comments/34exz3/prof_hudak_passed_away_last_... his gifts http://www.reddit.com/r/programming/comments/34f19q/paul_hudak_creator_of_ha... from the heart. *Quotes of the Week* - A type system flattens the cost of change curve http://www.agilemodeling.com/essays/costOfChange.htm. -- Chad Austin http://chadaustin.me/2015/04/the-long-term-problem-with-dynamically-typed-la... - The MLs and Haskell remind me of Brian Eno's line about how the first Velvet Underground album only sold 30,000 copies, but "everyone who bought one of those 30,000 copies started a band". -- Source https://news.ycombinator.com/item?id=9431944#up_9437017 - On the value of Haskell https://news.ycombinator.com/item?id=9445968#up_9448988: I find I'm able to accomplish tasks which would otherwise be beyond my skill and intelligence. For example, even though C was the first language I learned, I can't imagine writing a parser in C after discovering the simplicity & readability of monadic parsing in Haskell. - Haskell's level of abstraction is so crazy that they can actually swap out their entire I/O system for another one without changing any application interfaces, this one blew my mind, it's the change that makes GHC 7.8 run the Warp webserver twice as fast. ... All of this without changing a line in Warp, they just transparently made every traditional Haskell use modern I/O principles. Academics man, they're smart ;) -- Source https://news.ycombinator.com/item?id=9419601#up_9432564 - An old man loved is winter with flowers. -- Edgar Z. Friedenberg *Cool Beans of the Week* - Ravi Chugh and his fine team at U. Chicago just concluded stateside's first ever FRP-based FP course for undergrads using Elm. Check out the student projects https://www.classes.cs.uchicago.edu/archive/2015/winter/22300-1/Showcase.htm... for inspiration on FRP architecture. Over in Bonn, Janis Voigtländer also gave such a course https://groups.google.com/d/msg/elm-discuss/Qjs6sp3lZq0/8aa5bvYcdDYJ that completed this year. Paul's legacy lives on. p.s. Coming soon: Cabal Hell -- Kim-Ee