Daniel Santa Cruz | 10 Jan 04:26 2013

Haskell Weekly News: Issue 254

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" :-)

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

   * 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
     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

   * 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

   * 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

   * cmccann: some people blame themselves, some people blame the
     language, but the people who really know what they're doing blame

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


  40. file://localhost/r/haskell/comments/14nj0r/what_doesnt_haskell_do_well/

Haskell mailing list
Haskell <at> haskell.org