[Haskell-cafe] Haskell Weekly News: Issue 213
Daniel Santa Cruz
dstcruz at gmail.com
Thu Feb 2 03:42:05 CET 2012
Welcome to issue 213 of the HWN, a newsletter covering quotes, stories,
and questions seen around the net concerning Haskell during the week of
January 22 to 28, 2012.
You can read the HTML version at:
http://contemplatecode.blogspot.com/2012/02/haskell-weekly-news-issue-213.html
Quotes of the Week
* monochrom: great way to answer a semantics question by commenting
on the font ... "what is the semantics of IO?" "the I may be
narrower than O in some fonts, and same width in some other fonts"
... "on very old typewriters, it also denotes the number 10 (ten),
for those of you looking for a denotation"
* elliott: |\/|/-\|-|-|=|\||} is my preferred mappend operator
* merijn: rostayob: I used to be a functional programmer like you,
but then I took an UML diagram to the knee >.>
* mauke: monoids are simple
elliott: And as we all know, monads are basically just monoids!
monochrom: haskell is basically just ascii
* O'Keefe: "Elegance is not optional."
* O'Keefe: "If I don't write it, I won't wrong it."
* kmc: "monads are like containers, as long as you forget everything
you know about containers, and treat it as a synonym for 'monad'"
* Enigmagic: this calls for mfix and some tequila
Top Reddit Stories
* SPJ : Escape From the Ivory Tower: The Haskell Journey, From 1990 to
2011
Domain: yow.eventer.com, Score: 67, Comments: 12
On Reddit: [1] http://goo.gl/JqRUW
Original: [2] http://goo.gl/9ILW1
* Make Things Now! - Pragmatic FP With Haskell (slides)
Domain: code.haskell.org, Score: 44, Comments: 22
On Reddit: [3] http://goo.gl/WJQnH
Original: [4] http://goo.gl/UMd9y
* ANNOUNCE: GHC 7.4.1 Release Candidate 2
Domain: haskell.org, Score: 37, Comments:
On Reddit: [5] http://goo.gl/D9F37
Original: [6] http://goo.gl/sdD1L
* Web application that uses UHC to compile Haskell to JavaScript
Domain: alessandrovermeulen.me, Score: 36, Comments: 13
On Reddit: [7] http://goo.gl/A3S0k
Original: [8] http://goo.gl/lyX2K
* Web app that shows you the changes between releases of
packages on hackage
Domain: hdiff.luite.com, Score: 33, Comments: 4
On Reddit: [9] http://goo.gl/6ioFh
Original: [10] http://goo.gl/aZAyc
* Combining Regions and Iteratees
Domain: haskell.org, Score: 30, Comments: 10
On Reddit: [11] http://goo.gl/LEPiQ
Original: [12] http://goo.gl/k3wpd
* MonadBaseControl is unsound : Inside 233
Domain: blog.ezyang.com, Score: 29, Comments: 19
On Reddit: [13] http://goo.gl/ptCF6
Original: [14] http://goo.gl/Y5bbh
* Yesod example: wiki, markdown, chat subsite, event source
Domain: yesodweb.com, Score: 29, Comments: 1
On Reddit: [15] http://goo.gl/GyfzS
Original: [16] http://goo.gl/on96C
* inner beauty of tree traversals: pre- and post-order
Domain: blog.moertel.com, Score: 29, Comments:
On Reddit: [17] http://goo.gl/6fKzq
Original: [18] http://goo.gl/NpjrO
* Seem like there's a boycott of Elsevier going on.
Domain: thecostofknowledge.com, Score: 29, Comments: 1
On Reddit: [19] http://goo.gl/2B106
Original: [20] http://goo.gl/dvxML
* Unifying Monoids and Monads with Polymorphic Kinds
Domain: jonmsterling.com, Score: 26, Comments: 29
On Reddit: [21] http://goo.gl/kTafx
Original: [22] http://goo.gl/A3IrU
* Modelling IO: MonadIO and beyond
Domain: blog.ezyang.com, Score: 26, Comments: 4
On Reddit: [23] http://goo.gl/gr2M1
Original: [24] http://goo.gl/0n1a9
Top StackOverflow Questions
* Is it a good idea to compile a language to C?
votes: 26, answers: 7
Read on SO: [25] http://goo.gl/V8sSx
* Haskell GHC: what is the time complexity of a pattern match
with N constructors?
votes: 19, answers: 1
Read on SO: [26] http://goo.gl/SU0l8
* What to use instead of a main loop in Haskell?
votes: 12, answers: 2
Read on SO: [27] http://goo.gl/iYasz
* Associated types and container elements
votes: 12, answers: 2
Read on SO: [28] http://goo.gl/zBNWU
* Undefined at the type level
votes: 12, answers: 1
Read on SO: [29] http://goo.gl/m9Acn
* Is there a good reason why `deleteBy` does not have its
most general type?
votes: 10, answers: 3
Read on SO: [30] http://goo.gl/dQDrf
* Using low bitsize integral types like `Int8` and what they are for
votes: 9, answers: 2
Read on SO: [31] http://goo.gl/YaE68
* How is the ghc runtime support for profiling implemented?
votes: 9, answers: 2
Read on SO: [32] http://goo.gl/yz7eC
* how to achieve “product of two monads” effect?
votes: 9, answers: 1
Read on SO: [33] http://goo.gl/pLhVK
* Combine two monads when neither has a transformer?
votes: 9, answers: 1
Read on SO: [34] http://goo.gl/yw8tr
* Why don't type synonyms permit recursion in Haskell?
votes: 8, answers: 2
Read on SO: [35] http://goo.gl/hPzVq
Until next time,
Daniel Santa Cruz
References
1. http://yow.eventer.com/events/1004/talks/1054
2.
http://www.reddit.com/r/haskell/comments/ovc9s/spj_escape_from_the_ivory_tower_the_haskell/
3. http://code.haskell.org/~dons/talks/padl-keynote-2012-01-24.pdf
4.
http://www.reddit.com/r/haskell/comments/oxg3c/make_things_now_pragmatic_fp_with_haskell_slides/
5.
http://www.haskell.org/pipermail/glasgow-haskell-users/2012-January/021714.html
6.
http://www.reddit.com/r/haskell/comments/p0x96/announce_ghc_741_release_candidate_2/
7.
http://alessandrovermeulen.me/2012/01/26/getting-rid-of-javascript-with-haskell/
8.
http://www.reddit.com/r/haskell/comments/oz27a/web_application_that_uses_uhc_to_compile_haskell/
9. http://hdiff.luite.com/
10.
http://www.reddit.com/r/haskell/comments/ozjys/web_app_that_shows_you_the_changes_between/
11. http://www.haskell.org/pipermail/haskell-cafe/2012-January/098704.html
12.
http://www.reddit.com/r/haskell/comments/orh4f/combining_regions_and_iteratees/
13. http://blog.ezyang.com/2012/01/monadbasecontrol-is-unsound/
14.
http://www.reddit.com/r/haskell/comments/ot5f2/monadbasecontrol_is_unsound_inside_233/
15. http://www.yesodweb.com/blog/2012/01/wiki-chat-subsite
16.
http://www.reddit.com/r/haskell/comments/oub3p/yesod_example_wiki_markdown_chat_subsite_event/
17.
http://blog.moertel.com/articles/2012/01/26/the-inner-beauty-of-tree-traversals
18.
http://www.reddit.com/r/haskell/comments/oyu7d/inner_beauty_of_tree_traversals_pre_and_postorder/
19. http://thecostofknowledge.com/
20.
http://www.reddit.com/r/haskell/comments/ozi7i/seem_like_theres_a_boycott_of_elsevier_going_on/
21.
http://www.jonmsterling.com/posts/2012-01-12-unifying-monoids-and-monads-with-polymorphic-kinds.html
22.
http://www.reddit.com/r/haskell/comments/osn5d/unifying_monoids_and_monads_with_polymorphic_kinds/
23. http://blog.ezyang.com/2012/01/modelling-io/
24.
http://www.reddit.com/r/haskell/comments/ourfu/modelling_io_monadio_and_beyond/
25.
http://stackoverflow.com/questions/8976423/is-it-a-good-idea-to-compile-a-language-to-c
26.
http://stackoverflow.com/questions/9027384/haskell-ghc-what-is-the-time-complexity-of-a-pattern-match-with-n-constructors
27.
http://stackoverflow.com/questions/9015318/what-to-use-instead-of-a-main-loop-in-haskell
28.
http://stackoverflow.com/questions/9016521/associated-types-and-container-elements
29. http://stackoverflow.com/questions/9036554/undefined-at-the-type-level
30.
http://stackoverflow.com/questions/9004937/is-there-a-good-reason-why-deleteby-does-not-have-its-most-general-type
31.
http://stackoverflow.com/questions/8963942/using-low-bitsize-integral-types-like-int8-and-what-they-are-for
32.
http://stackoverflow.com/questions/9010808/how-is-the-ghc-runtime-support-for-profiling-implemented
33.
http://stackoverflow.com/questions/9013329/how-to-achieve-product-of-two-monads-effect
34.
http://stackoverflow.com/questions/9034060/combine-two-monads-when-neither-has-a-transformer
35.
http://stackoverflow.com/questions/8963376/why-dont-type-synonyms-permit-recursion-in-haskell
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