Haskell Weekly News: Issue 267

Welcome to issue 267 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of April 28 to May 11, 2013.

Quotes of the Week

• ciaranm: a category is just a category in the category of categories
• cmccann: the Either monad is like the Maybe monad, except with something instead of Nothing.
• sclv: Q: Why are the adjunctions of Galois connections backwards? A: He never got the hang of duals.
• acowley: blackdog's experience with IDEs is apparently both more sensual and more culinary than mine
• cmccann: shachaf jokes are what the quotes section of HWN is for.
  cmccann: though lately there have been not as many :[
  shachaf: cmccann: Hey, there wasn't a single shachaf quote in the last HWN!
  shachaf: Leave me alone.
  shachaf: There were two cmccann quotes.
• edwardk: cmccann: i'm NDA'd out of that space for a while ;)
  elliott: edwardk just collects NDAs so that he can focus.
• trapdInIO: in java everything happens elsewhere
• edwardk: i never bothered to release the c preprocessor because it was entangled with an old compiler of mind
• acowley: I get nervous when I haven't triggered the impossible for more than a month or so :/
• hpc: be careful, excessive consumption of lenses will go straight to your type signature
• acowley: The longer I leave this function named "jumanji" the less I want to find a better name
• ion: The next step is unsafeCoerce. At that point you’re halfway into implementing lens.
• bos: i'm not sure edwardk is a good model to follow. (a) because you won't be able to, and (b) because you won't be able to.

Top Reddit Stories

• John Carmack interested in doing a moderate-sized project in Haskell. From (twitter.com), scored 136 with 30 comments.
• John Carmack starting port of Wolf 3D in Haskell. From (twitter.com), scored 108 with 19 comments.
• Haskell for all: Program imperatively using Haskell lenses. From (haskellforall.com), scored 103 with 80 comments.
• unm-hip a Haskell Image Processing Library. From (self.haskell), scored 71 with 18 comments.
• Crit-bit trees in Haskell: fast, and open to contributors!. From (github.com), scored 56 with 16 comments.
• Tutorial on HLearn's Markov networks, monoids, and "type level lenses" explained with Futurama. From (izbicki.me), scored 53 with 10 comments.
• Cool mailing list archive I stumbled on: Haskell controlling garbage trucks. From (haskell.org), scored 49 with 2 comments.
• Haskell intuition. From (self.haskell), scored 49 with 23 comments.
• The Difference between Recursion & Induction. From (blog.ezyang.com), scored 47 with 3 comments.
• Yesod 1.2 released. From (yesodweb.com), scored 45 with 8 comments.
• Haskell 2014 committee has now been formed. From (thread.gmane.org), scored 42 with 27 comments.
• Web Frameworks Benchmark 4 (includes WAI). From (techempower.com), scored 41 with 60 comments.
• Haskell for all: pipes-3.3.0: Folds and uniting ListT with Proxy. From (haskellforall.com), scored 41 with 14 comments.
• First working program using the Repa plugin. From (disciple-devel.blogspot.com), scored 39 with 5 comments.
• How to use Hoogle from GHCi. From (youtube.com), scored 36 with 2 comments.
• 4th Episode of "The Pragmatic Haskeller": HTTP and more. From (cakesolutions.net), scored 35 with 3 comments.
• A monadic joke. From (self.haskell), scored 34 with 28 comments.
• A "Natural" Theorem Prover in Haskell — By Tim Gowers!. From (gowers.wordpress.com), scored 34 with 5 comments.
• Towards a Haskell Logic Library. From (spin.atomicobject.com), scored 30 with 1 comments.
• Barabra Liskov - Keynote: The Power of Abstraction. From (infoq.com), scored 29 with 25 comments.

Top StackOverflow Questions

• What constitutes a fold for types other than list? votes: 34, answers: 4
• Lazy vs Strict implementations of data structures votes: 19, answers: 2
• Compiling very large constants with GHC votes: 17, answers: 1
• Haskell Tree splitting: Can someone please explain this line? votes: 16, answers: 1
• Could cabal notice about unused package in dependencies? votes: 15, answers: 1
• How can eta-reduction of a well typed function result in a type error? votes: 14, answers: 2
• What is so special about Monads? votes: 14, answers: 4
• Why does ghci desugar type lists and type families? Can this be selectively disabled? votes: 13, answers: 0
• How are functors in Haskell and OCaml similar? votes: 13, answers: 1
• Monitoring GHC activity votes: 10, answers: 1
• Why isn't the Prelude's words function written more simply? votes: 10, answers: 1
• How to design a monadic stack? votes: 10, answers: 2
• How to generate arbitrary instances of a simple type for quickcheck votes: 9, answers: 2

Until next time,
+Daniel Santa Cruz

Haskell Weekly News: Issue 266

Welcome to issue 266 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of April 7 to 27, 2013.

Quotes of the Week

• hpc: the dirty secret of haskell programmers is that their power does not come from their PhD, but their bowtie
• tibbe: I think I have implemented a reverse state monad by mistake. The numbers suggest I'm getting the values tunneled back from the future. :/
• SaulGorn: A formalist is one who cannot understand a theory unless it is meaningless.
• cmccann: laziness by default is a shortcoming. eagerness by default is a bigger shortcoming.
• monochrom: #haskell-blah has brilliant people too. for example me.
• limo: OK, guys was nice meeting you and now I'm a proud owner of a GHCi icon on my desktop
• otters: lens law #1: the implementation must be shorter than the type
• MartinDeMello: Any sufficiently well-commented Lisp program contains an ML program in its comments.
• tgeeky: whatever man. Jesus only had twelve or so deciples, lens has 80!
• SatnamSingh: I always thought that category theory was something that happened to other people. (#ICFP)
• cmccann: see the thing is tabs are good for indentation. haskell doesn't use indentation, it uses alignment. it is not indenting. it is ASCII art.
• JohnVonNeumann: In mathematics you don't understand things. You just get used to them.
• edwardk: you can view Yoneda f as enforced fmap fusion and Codensity f as enforced bind fusion.

Top Reddit Stories

• Functors, applicatives, and monads in pictures. From (adit.io), scored 136 with 67 comments.
• What I Wish I Knew When Learning Haskell, Stephen Diehl [39 slides, Left/Rgt-arrow key to back/advance]. From (dev.stephendiehl.com), scored 119 with 37 comments.
• git clone in Haskell from the bottom up. From (stefan.saasen.me), scored 86 with 6 comments.
• Vinyl: Modern Records for Haskell. From (jonmsterling.com), scored 56 with 27 comments.
• Follow-up: Web Woes for Haskell. From (self.haskell), scored 49 with 9 comments.
• What does “coalgebra” mean in the context of programming? (StackOverflow). From (stackoverflow.com), scored 45 with 23 comments.
• The Mother of all Monads - School of Haskell. From (self.haskell), scored 42 with 27 comments.
• Why do all the Haskell Web Frameworks rely on Template Haskell?. From (self.haskell), scored 40 with 59 comments.
• Job opening for Haskell developer in Nijmegen (NL). From (self.haskell), scored 39 with 6 comments.
• Tutorial: Building a Sample Application with Haskell Snap, PostgreSQL, and the PostgreSQL Simple Snaplet. From (janrain.com), scored 39 with 17 comments.
• Haskell for all: Defaults. From (haskellforall.com), scored 38 with 20 comments.
• Haskell for all: pipes-concurrency-1.0.0: Reactive programming. From (haskellforall.com), scored 38 with 23 comments.
• Haskell in Ipython. From (github.com), scored 38 with 7 comments.
• A taste of Curry (Wolfgang Jeltsch). From (jeltsch.wordpress.com), scored 38 with 0 comments.
• Complete and Easy Bidirectional Typechecking for Higher-Rank Polymorphism. From (semantic-domain.blogspot.co.uk), scored 37 with 21 comments.
• Template Haskell on impossible architectures (x-post from r/programming). From (joeyh.name), scored 37 with 14 comments.
• inefficient Ackermann implementation not obvious how to improve. From (stackoverflow.com), scored 37 with 20 comments.
• Haskell for all: pipes and io-streams. From (haskellforall.com), scored 37 with 20 comments.
• Build applications with Shake build system. From (lethalman.blogspot.it), scored 35 with 5 comments.
• What’s in a number? criterion edition. From (serpentine.com), scored 34 with 6 comments.
• Announcing postgresql-simple 0.3.1. From (blog.melding-monads.com), scored 34 with 5 comments.
• LGtk: Lens-based Gtk Interface. From (people.inf.elte.hu), scored 32 with 64 comments.
• Introduction to QuickCheck testing (new FP complete SoH tutorial). From (fpcomplete.com), scored 32 with 7 comments.
• Introduction to Haskell, Lecture 12 is Live (Category Theory). This is the last lecture in this series. Thank you for your support!. From (shuklan.com), scored 31 with 4 comments.

Top StackOverflow Questions

• What does “coalgebra” mean in the context of programming? votes: 134, answers: 3
• Ackermann very inefficient with Haskell/GHC votes: 39, answers: 7
• How to concisely express function iteration? votes: 21, answers: 3
• Does the GHC garbage collector have any special optimisations for large objects? votes: 16, answers: 1
• Parallel computations with fast randomness and purity? votes: 16, answers: 4
• Idiomatic Scala translation of Kiselyov's zippers? votes: 15, answers: 1
• Singleton types in Haskell votes: 14, answers: 1
• Encoding correctness constraints directly into the Haskell type system? votes: 14, answers: 2
• Monad transformers with identity monad votes: 12, answers: 2
• Extensible Haskell Type Classes votes: 12, answers: 4
• GADT's failed exhaustiveness checking votes: 12, answers: 2
• QuickCheck: Arbitrary instances of nested data structures that generate balanced specimens votes: 11, answers: 1
• What is this special functor structure called? votes: 11, answers: 1

Until next time,
+Daniel Santa Cruz

Haskell Weekly News: Issue 265

Welcome to issue 265 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of March 31 to April 6, 2013.

Quotes of the Week

• Jafet: Haskell is an abstract research language used only in academia, education, banking, stock trading, circuit design, embedded systems, cryptography, operating systems research, bioinformatics, phone apps, and web services.
• monochrom: primop is where the turtle tower ends and the russian dolls begin!
• sclv: haha. i love this stuff but if i bury myself in it my head will start spinning around like exorcist and i will start spitting blood

Top Reddit Stories

• Haskell beats C using generalised stream fusion - Geoff Mainland, Simon Peyton Jones, Simon Marlow, Roman Leshchinskiy. Submitted to ICFP 2013 [PDF]. From (research.microsoft.com), scored 106 with 47 comments.
• Functor is now a superclass of Monad in GHC HEAD. From (darcs.haskell.org), scored 87 with 33 comments.
• Yet Another Lambda Blog » Haskell as fast as C: A case study. From (lambda.jstolarek.com), scored 61 with 25 comments.
• Beautiful Concurrency - a series of articles by Simon Peyton-Jones - on FP Complete School of Haskell. From (fpcomplete.com), scored 60 with 20 comments.
• Web Woes for Haskell. From (self.haskell), scored 43 with 42 comments.
• Cap'n Proto: faster protocol buffers, written in Haskell & C++. From (kentonv.github.com), scored 42 with 11 comments.
• Resource limits for Haskell. From (blog.ezyang.com), scored 38 with 1 comments.
• Dependent Types - A New Paradigm? by Paul Callaghan. From (pragprog.com), scored 33 with 1 comments.
• So I accidentally a profunctors tutorial. From (fpcomplete.com), scored 31 with 43 comments.
• UPenn CIS 194: Intro to Haskell, Instructor: Brent Yorgey. From (seas.upenn.edu), scored 31 with 4 comments.
• Sorting with Agda. From (mazzo.li), scored 30 with 33 comments.
• Announcing The Pragmatic Haskeller. From (cakesolutions.net), scored 29 with 7 comments.
• Flavours of free applicative functors. From (ro-che.info), scored 27 with 6 comments.
• Free Applicative Functors (ICFP submission). From (paolocapriotti.com), scored 25 with 11 comments.
• Handling out of memory?. From (self.haskell), scored 25 with 17 comments.
• hydra-print - visualizing multiple texts streams. From (parfunk.blogspot.se), scored 24 with 7 comments.
• Lazy IO breaks equational reasoning. From (okmij.org), scored 24 with 124 comments.
• Haskell on Windows. From (gundersen.net), scored 23 with 14 comments.
• Constrained Monads (GADTs indexed by Constraint). From (ittc.ku.edu), scored 21 with 7 comments.

Top StackOverflow Questions

• Simple examples to illustrate Category, Monoid and Monad? votes: 28, answers: 1
• Which techniques have contributed the most to Haskell's improving performance? [closed] votes: 18, answers: 1
• Why does Parsec not use Control.Applicative operators votes: 13, answers: 1
• ghc 7.4.2, Dynamically calling modules votes: 10, answers: 1
• What's wrong with this implementation of quicksort using Arrows? votes: 10, answers: 2
• Initializing algebraic data type from list votes: 9, answers: 4
• Scoped type variables require explicit foralls. Why? votes: 9, answers: 1
• Parsing UnicodeSyntax with haskell-src-exts votes: 8, answers: 1

Until next time,
+Daniel Santa Cruz

Haskell Weekly News: Issue 264

Welcome to issue 264 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of March 17 to 30, 2013.

Quotes of the Week

• ddarius: (f x) is a partial application iff f x == (curry (uncurry f) x)
• flebron: "Hey, I am Haskell; and this is lazy; so here's a function; I'll call it, maybe."
• WinstonChurchill: It is a good thing for an uneducated man to read books of quotations.
• ab9rf: (on duck typing) if you want a duck-submarine-employee-tomato, you can do that
• johnw: Stealing lens from the gods, and then having my liver eaten out daily.
• dibblego: scala puts road blocks in your way proportional to how effective you want to be
• hiptobecubic: I want my programs to either be correct or violently explode
• shachaf: edwardk will try to get you addicted to monoids. The first one is always free.
• merijn: So apparently there's a footballer named lens, who played some important part in the match against the Netherlands... Which would explain the fact that twitter is telling me "lens" is trending, I was starting to think haskell had won the PL revolution with edwardk as our glorious leader ;)
• elliott: all I want for christmas is a boring lambdabot.

Top Reddit Stories

• What’s good for C++ is good for … Haskell!?. From (serpentine.com), scored 101 with 20 comments.
• Anatomy of Programming Languages (in Haskell). From (self.haskell), scored 72 with 29 comments.
• Programming and Reasoning with Algebraic Effects and Dependent Types. From (edwinb.wordpress.com), scored 58 with 28 comments.
• School of Haskell—Basic Lensing. From (fpcomplete.com), scored 57 with 39 comments.
• Haskell for all: mmorph-1.0.0: Monad morphisms. From (haskellforall.com), scored 56 with 18 comments.
• Haskell News. From (haskellnews.org), scored 43 with 12 comments.
• pipes-3.2: ListT, Codensity, ArrowChoice, and performance. From (haskellforall.com), scored 43 with 19 comments.
• Introducing diagrams-haddock. From (byorgey.wordpress.com), scored 41 with 13 comments.
• Optimising Purely Functional GPU Programs. From (justtesting.org), scored 41 with 2 comments.
• Creating board games in Haskell in 100 lines of code. From (keera.co.uk), scored 38 with 30 comments.
• What is the logarithm or root operation in type-space? (x-post from r/compsci). From (cstheory.stackexchange.com), scored 38 with 17 comments.
• New GHC Extension - Nullary Type Classes (apparently not an April Fool's joke). From (hackage.haskell.org), scored 37 with 24 comments.
• The Monad.Reader issue 21. From (themonadreader.files.wordpress.com), scored 30 with 2 comments.
• Dependently Typed Functional Programming with Idris 4 (last lecture). From (vimeo.com), scored 28 with 4 comments.
• Conal Elliot: Folds and Unfolds. From (conal.net), scored 28 with 5 comments.
• Mihai-Radu Popescu's book in progress: "Speeding Through Haskell". From (sthaskell.com), scored 26 with 15 comments.
• hchip - a Haskell emulator for Chip16. From (self.haskell), scored 25 with 1 comments.
• Introduction to Haskell, Lecture 8 is Live (Monads). From (shuklan.com), scored 25 with 22 comments.
• School of Haskell: Learning Haskell Through Koans. From (fpcomplete.com), scored 22 with 2 comments.
• Arrow Notation in Functional Reactive Programming demonstrated with a simple OpenGL demo (Yampa). From (youtube.com), scored 22 with 9 comments.

Top StackOverflow Questions

• Maintaining complex state in Haskell votes: 23, answers: 1
• Is using mapM/sequence considered good practice? votes: 14, answers: 3
• Can I model a list of successes with short circuiting failure via the composition of applicative functors? votes: 12, answers: 2
• Understanding Polytypes in Hindley-Milner Type Inference votes: 12, answers: 2
• Why add “Eq” type constraint without using “==”? votes: 11, answers: 1
• :: a -> (a -> b) -> b operator (Haskell) votes: 11, answers: 3
• What's the most efficient way to represent finite (non-recursive) algebraic type values? votes: 10, answers: 2
• What's the “easier way” that deprecates the need for Data.Conduit.Util's zip? votes: 10, answers: 1
• Haskell equivalent of scala collect votes: 10, answers: 1
• Scheduling a Timeout in Haskell votes: 10, answers: 1

Until next time,
+Daniel Santa Cruz

Haskell Weekly News: Issue 263

Welcome to issue 263 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of March 10 to 16, 2013.

Quotes of the Week

• shachaf: Did someone give edwardk a committee bit?

Top Reddit Stories

• Restored: the Haskell mailing list archives: 1990-2000. The lost books of Haskell. From (code.haskell.org), scored 71 with 9 comments.
• Dependently Typed Functional Programming with Idris [video]. From (vimeo.com), scored 49 with 20 comments.
• Snake game in Haskell. From (self.haskell), scored 48 with 19 comments.
• A simple graphical notation for lambda calculus. From (binarylambda.blogspot.com), scored 46 with 35 comments.
• Simon Peyton Jones on Adventures with types (Functional Programming eXchange 2013). From (skillsmatter.com), scored 46 with 27 comments.
• Guide to GHC Extensions (just some simple ones for now, will expand over time) - School of Haskell. From (fpcomplete.com), scored 42 with 25 comments.
• layers-0.1: Modular type class machinery for monad transformer stacks.. From (hackage.haskell.org), scored 37 with 30 comments.
• Type Families and Pokemon: School of Haskell Pick of the Week. From (fpcomplete.com), scored 35 with 3 comments.
• Gale: an IDE for creating games in Haskell. From (youtube.com), scored 31 with 4 comments.
• What is the best way to make a simple web service in Haskell?. From (self.haskell), scored 31 with 34 comments.
• Wadler's Blog: Informatics 1: Functional Programming. From (wadler.blogspot.ro), scored 25 with 3 comments.
• Constructions on Typeclasses, Part 1: F-Algebras. From (lukepalmer.wordpress.com), scored 24 with 0 comments.
• cabal-dev updated on hackage. From (haskell.org), scored 24 with 37 comments.
• monoid-subclasses: ListLike-like, only built on sound theoretical foundations. From (hackage.haskell.org), scored 22 with 24 comments.
• Introduction to Concurrent Haskell - Simon Marlow [FP Days Cambridge 2012]. From (infoq.com), scored 22 with 1 comments.

Top StackOverflow Questions

• Proposal for local data declarations / instances votes: 15, answers: 1
• What is the equivalent Haskell type for C99 bool when using FFI? votes: 14, answers: 2
• Disadvantages of using INLINABLE pragma votes: 13, answers: 1
• How to compare two lists in Haskell? votes: 11, answers: 4
• Haskell space usage compile time restrictions votes: 11, answers: 2
• haskell - Average floating point error using QuickCheck votes: 10, answers: 1
• Trying to understand function application operator in Haskell votes: 9, answers: 1
• Haskell equivalent to Scala's groupBy votes: 9, answers: 4
• (Num a) vs Integer type inference votes: 9, answers: 3

Until next time,
+Daniel Santa Cruz

Haskell Weekly News: Issue 262

Welcome to issue 262 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of March 03 to 09, 2013.

Quotes of the Week

• byorgey: The box does not care whether you think it is stupid. It is box.
• ksf: duh, we can't run out of energy, as there's a fixed amount of it.
• shachaf: getLine :: IO String contains a String in the same way that /bin/ls contains a list of files
• macrover: is there a comparison between the various streams/pipes/conduits libraries?
  Cale: macrover: I am presently resisting the temptation to make a table with the libraries and only one other column which is "maximum number of type parameters to a type constructor".
• tac: It's actually really easy to remember all the numeric typeclasses in Haskell. Just think about what makes sense... then make sure whatever your answer is is not that

Top Reddit Stories

• I can't shake the impression that FRP code is just awful to read. Thoughts?. From (self.haskell), scored 63 with 87 comments.
• Announcing: first release of io-streams. From (snapframework.com), scored 58 with 125 comments.
• School of Haskell Goes Public -- learning and teaching Haskell. From (haskell.fpcomplete.com), scored 50 with 26 comments.
• Announcing http-streams, a new HTTP client library for Haskell using the Snap Framework's io-streams.. From (blogs.operationaldynamics.com), scored 43 with 20 comments.
• How OCaml type checker works -- or what polymorphism and garbage collection have in common. From (okmij.org), scored 43 with 2 comments.
• Yann Esposito's "Haskell Fast & Hard": A fast-paced tutorial for Haskell beginners. From (fpcomplete.com), scored 42 with 16 comments.
• hArduino: Control your Arduino board from Haskell. From (self.haskell), scored 41 with 3 comments.
• binary 0.7. From (lennartkolmodin.blogspot.ru), scored 35 with 14 comments.
• IRC Browse: #haskell — first release. From (ircbrowse.net), scored 35 with 33 comments.
• Responsive design with Clay. From (fvisser.nl), scored 28 with 5 comments.
• The 'build' function explained. From (self.haskell), scored 28 with 9 comments.
• How (the syntactic type equality of) GADTs inhibit abstraction. From (lukepalmer.wordpress.com), scored 26 with 26 comments.
• Caledon 2.0: Consistency & IO. Now based on the calculus of constructions.. From (github.com), scored 21 with 7 comments.

Top StackOverflow Questions

• Are thread pools needed for pure Haskell code? votes: 27, answers: 1
• Independent subset of cabal packages set votes: 21, answers: 2
• Should I use a lexer when using a parser combinator library like Parsec? votes: 19, answers: 1
• Current state of Haskell soft real-time votes: 9, answers: 2
• Difference for ncurses between interpreted and compiled Haskell? votes: 9, answers: 1
• More fun with applicative functors votes: 8, answers: 5
• What's the real benefit of conduit's upstream type parameter? votes: 8, answers: 2
• What's the benefit of conduit's leftovers? votes: 8, answers: 2

Until next time,
+Daniel Santa Cruz

Haskell Weekly News: Issue 261

Welcome to issue 261 of the HWN, an issue covering crowd-sourced bits of information about Haskell from around the web. This issue covers the week of February 24 to March 02, 2013.

Quotes of the Week

• EvilMachine: I always picture some poor mutant guy whose every body part looks alike in the deepest depths of the dark ages going to the doc, and being told he has “monomorphism”.
• pmk: the last time i asked GHC to compile a function with forty (.)'s in a row, it took over an hour

Top Reddit Stories

• Some draft chapters of "Parallel and Concurrent Programming in Haskell" available online for comment. From (self.haskell), scored 79 with 40 comments.
• Hulk: A Haskell IRC server - Nice example of real world monad without IO. From (chrisdone.com), scored 62 with 18 comments.
• Hole-driven Haskell. From (matthew.brecknell.net), scored 59 with 52 comments.
• Chasing a Space Leak in Shake: Profiling, reduction, digging thru stacks. From (neilmitchell.blogspot.com), scored 46 with 11 comments.
• Haskell patterns ad nauseam. From (yaxu.org), scored 39 with 2 comments.
• Cross Compiling for iOS with GHC. From (hackage.haskell.org), scored 35 with 18 comments.
• From Set Theory to Type Theory. From (golem.ph.utexas.edu), scored 35 with 8 comments.
• EclipseFP 2.5.0 released: cabal-dev support, import cleaning, and more. From (jpmoresmau.blogspot.fr), scored 31 with 0 comments.
• Michael Snoyman's overview of the new conduit 1.0, on School of Haskell. From (haskell.fpcomplete.com), scored 31 with 11 comments.
• How is Haskell tackling the multicore problem? - Simon Marlow. From (youtube.com), scored 28 with 5 comments.
• Generics and Protocol Buffers... now on Hackage. From (breaks.for.alienz.org), scored 28 with 5 comments.
• Demonstrating tidal - haskell music patterns in action. From (blog.lurk.org), scored 24 with 5 comments.
• GHC iOS Packages. From (github.com), scored 23 with 5 comments.
• SoH tutorial: a regular expression matcher using continuations. From (haskell.fpcomplete.com), scored 22 with 4 comments.
• [nyc-haskell] Greg Wright - A Purely Symbolic Effort in Mathematics. From (vimeo.com), scored 22 with 6 comments.
• ANN: clckwrks 0.16 Haskell blog/CMS platform released. Includes a screencast demonstrating clckwrks features.. From (clckwrks.com), scored 20 with 2 comments.

Top StackOverflow Questions

• Do Hask or Agda have equalisers? votes: 23, answers: 2
• Prove idempotency of type-level disjunction votes: 17, answers: 2
• Internal representation of Haskell lists? votes: 16, answers: 2
• GHC Generating Redundant Core Operations votes: 15, answers: 1
• eliminating repetition in cabal files votes: 14, answers: 0
• Translate from monad to applicative votes: 12, answers: 3
• Memoizing multiplication votes: 10, answers: 2
• Most efficient way to seek around in a large file votes: 9, answers: 1
• Does Haskell optimizer utilize memoization for repeated function calls in a scope? votes: 9, answers: 3
• Existential type in higher order function votes: 9, answers: 1
• Haskell `ncurses` library votes: 9, answers: 2

Until next time,
+Daniel Santa Cruz