February 2008 - Haskell-Cafe

getSymbolicLinkStatus completely broken on some 6.8.2 systems
by Jeremy Shaw 13 Feb '08

13 Feb '08

Hello, I get funny results when I call getSymbolicLinkStatus in ghc 6.8.2 on Ubuntu 7.10. This happens on several systems and has been confirmed by other people. Though, some people on almost the exact same system claimed to not see it at all. Here is an interactive example with ghci, note how the result changes from run to run. (Although not shown below, the values do sometimes repeat, so it is not completely random): Prelude> System.Posix.Files.getSymbolicLinkStatus "/etc/motd" >>= print . System.Posix.Files.fileID 13165085651657739420 Prelude> System.Posix.Files.getSymbolicLinkStatus "/etc/motd" >>= print . System.Posix.Files.fileID 13165312309966851228 Prelude> System.Posix.Files.getSymbolicLinkStatus "/etc/motd" >>= print . System.Posix.Files.fileID 623410571888290073 Prelude> System.Posix.Files.getSymbolicLinkStatus "/etc/motd" >>= print . System.Posix.Files.fileID 12892261005034 If I *compile* the following (with or without optimization): module Main where import System.Posix.Files main = do getSymbolicLinkStatus "/etc/motd" >>= print . fileID getSymbolicLinkStatus "/etc/motd" >>= print . fileID getSymbolicLinkStatus "/etc/motd" >>= print . fileID getSymbolicLinkStatus "/etc/motd" >>= print . fileID Then I get all 0: /tmp # ./test 0 0 0 0 I have tested the same code under GHC 6.6 and 6.4 and it works fine. Additionally, getFileStatus, seems to work fine everytime. (Unfortunately, I really need getSymbolicLinkStatus). If anyone has a work-around or fix that I can use in the next 15 hours, that would be extremely useful ;) Thanks in advance! j.

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existential types
by Simeon Mattes 13 Feb '08

13 Feb '08

I have found that ghc has adopted the existential data constructors. Because it was first time I have heard this term I have found some articles about it. The less complex for me was the following explanation data Worker x y = Worker {buffer :: b, input :: x, output :: y} This is wrong in Haskell98 because we can 't just hide buffer :: b. We should write instead data Worker b x y = Worker {buffer :: b, input :: x, output :: y} Let suppose that b has an indefinite type. Then with existential types we could write data Worker x y = forall b. Buffer b => Worker {buffer :: b, input :: x, output :: y} The example above is similar to the example that Paul Hudak, John Hughes, Simon Peyton Jones and Philip Wadler mention in an article "a history of Haskell". Though I can't figure out how exactly could utilize such a type. To be honest haskell is my first functional language and I 'm not so familiar with. So, an example would be very helpful

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ANN: unix-pty-light 0.1
by Stuart Cook 13 Feb '08

13 Feb '08

A little while ago, I needed bindings for creating and accessing a pseudo-terminal device. Since I couldn't find any in the unix package, I wrote my own. Later, I found out that unix-2.2.0.0 does indeed contain pseudo-terminal bindings, but unfortunately it seems to be incompatible with my version of GHC (6.6). Therefore, I have created a package that provides pseudo-terminal support, and should work with both 6.6 and 6.8 (though I have only tested 6.6). As always, comments and feedback are most welcome. Hackage: http://hackage.haskell.org/cgi-bin/hackage-scripts/package/unix-pty-light-0… Darcs: http://code.haskell.org/~scook0/unix-pty-light/ Haddock: http://code.haskell.org/~scook0/haddock/unix-pty-light/ Stuart Cook

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Foreign.C.Types question ...
by Galchin Vasili 13 Feb '08

13 Feb '08

Hello, http://cvs.haskell.org/Hugs/pages/libraries/base/Foreign-C-Types.html .. I want to look at the actual code for these C types so that I can see how the instances of Storable for each type are coded so e.g. I can see how sizeOf/allignment are coded. Thanks, Vasili

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Announce : Sydney (Australia) Functional Programming Group
by Erik de Castro Lopo 13 Feb '08

13 Feb '08

Hi all, I'd like to announce the FP-SYD, the Sydney (Australia) Functional Programming group. The intro page is here: http://groups.google.com/group/fp-syd To subscribe to the mailing list (mainly for meeting organisation, meeting announcements, and Sydney job offers) either go to the URL above of send mail to: fp-syd-subscribe at googlegroups dot com Cheers, Erik -- ----------------------------------------------------------------- Erik de Castro Lopo ----------------------------------------------------------------- "Hey, I've re-dorkulated." -- Prof. Frink (The Simpsons)

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Windows, or GHC?
by Magnus Therning 12 Feb '08

12 Feb '08

The following code will on Linux print three strings each followed by a NULL byte: module Main where putStr0 = putStr $ s ++ "\0" main = do putStr0 "Hello" putStr0 "Hello" putStr0 "Hello" On Windows however it will print nothing! In order to trigger printing I have to change the definition of putStr0 to putStr0 = putStr (s ++ "\0") >> hFlush stdout Is this difference in behaviour due to a bug in GHC on Windows or just a quirkiness of the platform? /M

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Export Haskell Libraries
by SevenThunders 12 Feb '08

12 Feb '08

I've finished a good sized Haskell project which I now must expose as a library (along with a lot of C code) to my fellow engineers. I had originally devoped my code on Windows XP and managed to learn how to wrap my Haskell code in a DLL and create an MSVC linkable library stub for the DLL. Although involved, the output in windows is relatively transparent in that as long as the paths are available to the Haskell runtime libraries and my DLL, linking is straightforward. Now however I find I must export the same libraries to linux. I decided to get 'smart' and repackage my build tools using CMAKE and cabal. Building the C object files is no problem and even configuring Cabal to generate my executables is not too painful. However the pain begins when one tries to link any Haskell object files or libraries to an external C program. Using ghc -v during the build reveals that gcc has about 50 -u flag arguments and links to 9 or 10 different libraries. Given that my little component is just a tiny part of a large software project involving many more engineers and many man years of work, it's not going to be fun to link my little library using all these crazy build flags to a large external project, especially when order is important. Wouldn't it be nice if there were a single run time library I could link to, (or even generate on the fly) that didn't have this intricate build step. How is ghc/Haskell supposed to integrate with the rest of the software world? A related issue in the building of my export libraries is cabal itself. I want to package my own library with some external object files etc and some Haskell code. It's easily done with ar and the correct object files. Unfortunately it is not clear from the documentation how I can force cabal to place the object files and generated stub files in a place where I can use them. (CMake is kind of forcing me to have them reside with the source for reasons I don't want to go into here.) I instead find myself copying the object files (*.o) back into the source directory from an obscure tmp directory several layers down from the source directory. This is not particularly portable and is probably quite fragile once someone decides to change the directory hiearcharchy in cabal. I guess I am surprised that on linux, with all of it's amazing software development tools, that Haskell export libraries would be this tricky to develop. -- View this message in context: http://www.nabble.com/Export-Haskell-Libraries-tf3569747.html#a9972866 Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.

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Datatypes - Haskell
by Mattes Simeon 12 Feb '08

12 Feb '08

Hello to everybody I am an new user of Haskel and generally in functional programming and I could say that I am very impressed from this Language. Though I can't understand the use of datatypes. Let's take a firly simple situtation e.g. data Pair a b = Pair a b i.e. an new type with name Pair parameterized over the types a,b with one Constructor named Paid which take two values of type a,b a more complex one would be data Either a b = Left a | Right b i.e a new type named Either parameterized over the types a, b and two Constructors 1. Left which take one value of type a and 2. Right which takes one value of type b I consider that the definitions above are well formulated. Nevertheless I can't understand them quite well. I have read that datatypes are used to define new structures. So, is there any corresponding example in C, sinch I am quite familiar with structures in it? I hope the word C here is allowed here :o) Thanks

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Haskell Weekly News - February 10, 2008
by Don Stewart 12 Feb '08

12 Feb '08

--------------------------------------------------------------------------- Haskell Weekly News Issue 69 - February 10, 2008 --------------------------------------------------------------------------- Welcome to issue 69 of HWN, a newsletter covering developments in the [1]Haskell community. A quick update HWN this week, with a gazillion new libraries on Hackage. (> 150 new and updated libs!) 1. http://haskell.org/ Hackage New and updated libraries in [2]the Hackage library database. 2. http://hackage.haskell.org/ * WordNet 0.1.1. Uploaded by Max Rabkin. [3]WordNet: Haskell interface to the WordNet database. * lazysmallcheck 0.1. Uploaded by Gwern Branwen. [4]lazysmallcheck: A library for demand-driven testing of Haskell programs. * DrIFT 2.2.3. Uploaded by Gwern Branwen. [5]DrIFT: Program to derive type class instances. * highlighting-kate 0.2. Uploaded by John MacFarlane. [6]highlighting-kate: Syntax highlighting. * leksah 0.1. Uploaded by Juergen NicklischFranken. [7]leksah: Genuine Haskell Face. * frag 1.1. Uploaded by Gwern Branwen. [8]frag: 3-D First Person Shooter (FPS). * GoogleChart 0.2. Uploaded by Evan Martin. [9]GoogleChart: Generate web-based charts using the Google Chart API. * HFuse 0.1. Uploaded by Gwern Branwen. [10]HFuse: HFuse is a binding for the Linux FUSE library. * GoogleChart 0.1. Uploaded by Evan Martin. [11]GoogleChart: Generate web-based charts using the Google Chart API. * Finance-Quote-Yahoo 0.5.0. Uploaded by Brad Clawsie. [12]Finance-Quote-Yahoo: Obtain quote data from finance.yahoo.com. 3. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/WordNet-0.1.1 4. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/lazysmallcheck-0… 5. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/DrIFT-2.2.3 6. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/highlighting-kat… 7. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/leksah-0.1 8. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/frag-1.1 9. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/GoogleChart-0.2 10. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HFuse-0.1 11. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/GoogleChart-0.1 12. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Finance-Quote-Ya… * binary-strict 0.3.0. Uploaded by Adam Langley. [13]binary-strict: Binary deserialisation using strict ByteStrings. * Stream 0.2.3. Uploaded by Wouter Swierstra. [14]Stream: A library for manipulating infinite lists.. * Finance-Treasury 0.1.1. Uploaded by Stephen Lihn. [15]Finance-Treasury: Obtain Treasury yield curve data. * Hedi 0.1. Uploaded by Paolo Veronelli. [16]Hedi: Line oriented editor. * newports 1.1. Uploaded by Brad Clawsie. [17]newports: List ports newer than N days on a FreeBSD system. * Finance-Treasury 0.1. Uploaded by Stephen Lihn. [18]Finance-Treasury: Obtain Treasury yield curve data. * GPLib 0.0. Uploaded by Gwern Branwen. [19]GPLib: Generic library for genetic programming. * nano-hmac 0.1.1. Uploaded by Hitesh Jasani. [20]nano-hmac: Bindings to OpenSSL HMAC.. * multiset 0.1. Uploaded by Twan VanLaarhoven. [21]multiset: The Data.MultiSet container type. * hpodder 1.1.0. Uploaded by John Goerzen. [22]hpodder: Podcast Aggregator (downloader). 13. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/binary-strict-0.… 14. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Stream-0.2.3 15. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Finance-Treasury… 16. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Hedi-0.1 17. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/newports-1.1 18. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Finance-Treasury… 19. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/GPLib-0.0 20. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/nano-hmac-0.1.1 21. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/multiset-0.1 22. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hpodder-1.1.0 * bimap 0.2.1. Uploaded by Stuart Cook. [23]bimap: Bidirectional mapping between two key types. * monadLib 3.4.4. Uploaded by Iavor Diatchki. [24]monadLib: A collection of monad transformers.. * IOSpec 0.2. Uploaded by Wouter Swierstra. [25]IOSpec: A pure specification of the IO monad.. * bimap 0.2. Uploaded by Stuart Cook. [26]bimap: Bidirectional mapping between two key types. * strictify 0.1. Uploaded by Sterling Clover. [27]strictify: Find a local optimum of strictness annotations.. * heap 0.2.2. Uploaded by Stephan Friedrichs. [28]heap: Heaps in Haskell. * LDAP 0.6.4. Uploaded by John Goerzen. [29]LDAP: Haskell binding for C LDAP API. * HStringTemplate 0.2. Uploaded by Sterling Clover. [30]HStringTemplate: StringTemplate implementation in Haskell.. * RJson 0.3.2. Uploaded by Alex Drummond. [31]RJson: A reflective JSON serializer/parser.. * network-dns 0.1.1. Uploaded by Adam Langley. [32]network-dns: A pure Haskell, asyncronous DNS client library. 23. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/bimap-0.2.1 24. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/monadLib-3.4.4 25. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/IOSpec-0.2 26. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/bimap-0.2 27. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/strictify-0.1 28. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/heap-0.2.2 29. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/LDAP-0.6.4 30. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HStringTemplate-… 31. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/RJson-0.3.2 32. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/network-dns-0.1.1 * lcs 0.2. Uploaded by Ian Lynagh. [33]lcs: Find longest common sublist of two lists. * tracker 0.1. Uploaded by Will Thompson. [34]tracker: Client library for Tracker metadata database, indexer and search tool. * CC-delcont 0.2. Uploaded by Dan Doel. [35]CC-delcont: Delimited continuations and dynamically scoped variables. * control-timeout 0.1.2. Uploaded by Adam Langley. [36]control-timeout: Timeout handling. * network-dns 0.1. Uploaded by Adam Langley. [37]network-dns: A pure Haskell, asyncronous DNS client library. * binary-strict 0.2.4. Uploaded by Adam Langley. [38]binary-strict: Binary deserialisation using strict ByteStrings. * heap 0.1.1. Uploaded by Stephan Friedrichs. [39]heap: Heaps in Haskell. * HCL 1.3. Uploaded by Justin Bailey. [40]HCL: High-level library for building command line interfaces.. * yi 0.3. Uploaded by Jean PhilippeBernardy. [41]yi: The Haskell-Scriptable Editor. * binary-strict 0.2.3. Uploaded by Adam Langley. [42]binary-strict: Binary deserialisation using strict ByteStrings. 33. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/lcs-0.2 34. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/tracker-0.1 35. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/CC-delcont-0.2 36. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/control-timeout-… 37. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/network-dns-0.1 38. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/binary-strict-0.… 39. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/heap-0.1.1 40. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HCL-1.3 41. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/yi-0.3 42. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/binary-strict-0.… * heap 0.1. Uploaded by Stephan Friedrichs. [43]heap: Heaps in Haskell. * pureMD5 0.1.2. Uploaded by Thomas DuBuisson. [44]pureMD5: MD5 implementations that should become part of a ByteString Crypto package.. * RJson 0.3.1. Uploaded by Alex Drummond. [45]RJson: A reflective JSON serializer/parser.. * template 0.1.1.1. Uploaded by Johan Tibell. [46]template: Simple string substitution. * network-bytestring 0.1.1.1. Uploaded by Johan Tibell. [47]network-bytestring: Fast and memory efficient low-level networking. * ftphs 1.0.4. Uploaded by John Goerzen. [48]ftphs: FTP Client and Server Library. * mersenne-random-pure64 0.1.1. Uploaded by Donald Stewart. [49]mersenne-random-pure64: Generate high quality pseudorandom numbers purely using a Mersenne Twister. * Diff 0.1. Uploaded by Sterling Clover. [50]Diff: O(ND) diff algorithm in haskell.. * crack 0.1. Uploaded by Trevor Elliott. [51]crack: A haskell binding to cracklib. * miniplex 0.3.3. Uploaded by Lukas Mai. [52]miniplex: simple 1-to-N interprocess communication. 43. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/heap-0.1 44. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pureMD5-0.1.2 45. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/RJson-0.3.1 46. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/template-0.1.1.1 47. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/network-bytestri… 48. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/ftphs-1.0.4 49. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/mersenne-random-… 50. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Diff-0.1 51. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/crack-0.1 52. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/miniplex-0.3.3 * colock 0.2.2. Uploaded by Lukas Mai. [53]colock: thread-friendly file locks that don't block the entire program. * mersenne-random-pure64 0.1. Uploaded by Donald Stewart. [54]mersenne-random-pure64: Generate high quality pseudorandom numbers purely using a Mersenne Twister. * network-rpca 0.0.1. Uploaded by Adam Langley. [55]network-rpca: A cross-platform RPC library. * xmonad-contrib 0.6. Uploaded by Spencer Janssen. [56]xmonad-contrib: Third party extensions for xmonad. * xmonad 0.6. Uploaded by Spencer Janssen. [57]xmonad: A tiling window manager. * codec-libevent 0.1.2. Uploaded by Adam Langley. [58]codec-libevent: Cross-platform structure serialisation. * bytestringparser 0.3. Uploaded by Bryan OSullivan. [59]bytestringparser: Combinator parsing with Data.ByteString.Lazy. * HStringTemplate 0.2. Uploaded by Sterling Clover. [60]HStringTemplate: StringTemplate implementation in Haskell.. * value-supply 0.1. Uploaded by Iavor Diatchki. [61]value-supply: A library for generating values without having to thread state.. * derive 0.1.1. Uploaded by Neil Mitchell. [62]derive: A program and library to derive instances for data types. 53. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/colock-0.2.2 54. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/mersenne-random-… 55. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/network-rpca-0.0… 56. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/xmonad-contrib-0… 57. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/xmonad-0.6 58. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/codec-libevent-0… 59. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/bytestringparser… 60. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HStringTemplate-… 61. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/value-supply-0.1 62. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/derive-0.1.1 * control-timeout 0.1.1. Uploaded by Adam Langley. [63]control-timeout: Timeout handling. * mkcabal 0.4.1. Uploaded by Donald Stewart. [64]mkcabal: Generate cabal files for a Haskell project. * regexpr 0.2.9. Uploaded by Yoshikuni Jujo. [65]regexpr: regular expression like Perl/Ruby in Haskell. * mtlparse 0.0.0.5. Uploaded by Yoshikuni Jujo. [66]mtlparse: parse library use mtl package. * cgi 3001.1.5.2. Uploaded by Bjorn Bringert. [67]cgi: A library for writing CGI programs. * xhtml 3000.0.2.2. Uploaded by Bjorn Bringert. [68]xhtml: An XHTML combinator library. * harpy 0.4. Uploaded by Martin Grabmueller. [69]harpy: Runtime code generation for x86 machine code. * editline 0.2. Uploaded by Judah Jacobson. [70]editline: Bindings to the editline library (libedit).. * hmatrix 0.2.0.0. Uploaded by Alberto Ruiz. [71]hmatrix: Linear algebra and numerical computations. * regexpr 0.2.8. Uploaded by Yoshikuni Jujo. [72]regexpr: regular expression like Perl/Ruby in Haskell. 63. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/control-timeout-… 64. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/mkcabal-0.4.1 65. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.9 66. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/mtlparse-0.0.0.5 67. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/cgi-3001.1.5.2 68. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/xhtml-3000.0.2.2 69. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/harpy-0.4 70. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/editline-0.2 71. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hmatrix-0.2.0.0 72. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.8 * pcre-light 0.3. Uploaded by Donald Stewart. [73]pcre-light: A small, efficient and portable regex library for Perl 5 compatible regular expressions. * mersenne-random 0.1. Uploaded by Donald Stewart. [74]mersenne-random: Generate high quality pseudorandom numbers using a SIMD Fast Mersenne Twister. * AvlTree 2.4. Uploaded by Adrian Hey. [75]AvlTree: Balanced binary trees using AVL algorithm.. * fec 0.1.1. Uploaded by Adam Langley. [76]fec: Forward error correction of ByteStrings. * COrdering 2.1. Uploaded by Adrian Hey. [77]COrdering: An algebraic data type similar to Prelude Ordering.. * i18n 0.3. Uploaded by Eugene Grigoriev. [78]i18n: Internationalization for Haskell. * binary-strict 0.2.2. Uploaded by Adam Langley. [79]binary-strict: Binary deserialisation using strict ByteStrings. * regexpr 0.2.6. Uploaded by Yoshikuni Jujo. [80]regexpr: regular expression like Perl/Ruby in Haskell. * RJson 0.2. Uploaded by Alex Drummond. [81]RJson: A reflective JSON serializer/parser.. * regexpr 0.2.5. Uploaded by Yoshikuni Jujo. [82]regexpr: regular expression like Perl/Ruby in Haskell. 73. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pcre-light-0.3 74. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/mersenne-random-… 75. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/AvlTree-2.4 76. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/fec-0.1.1 77. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/COrdering-2.1 78. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/i18n-0.3 79. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/binary-strict-0.… 80. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.6 81. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/RJson-0.2 82. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.5 * fec 0.1. Uploaded by Adam Langley. [83]fec: Forward error correction of ByteStrings. * dataenc 0.10.2. Uploaded by Magnus Therning. [84]dataenc: Data encoding library. * regexpr 0.2.3. Uploaded by Yoshikuni Jujo. [85]regexpr: regular expression like Perl/Ruby in Haskell. * regexpr 0.2.2. Uploaded by Yoshikuni Jujo. [86]regexpr: regular expression like Perl/Ruby in Haskell. * reactive 0.3. Uploaded by Conal Elliott. [87]reactive: Simple foundation for functional reactive programming. * regexpr 0.2.1. Uploaded by Yoshikuni Jujo. [88]regexpr: regular expression like Perl/Ruby in Haskell. * djinn 2008.1.18. Uploaded by Lennart Augustsson. [89]djinn: Generate Haskell code from a type. * Etherbunny 0.3. Uploaded by Nicholas Burlett. [90]Etherbunny: A network analysis toolkit for Haskell. * regexpr 0.2.0. Uploaded by Yoshikuni Jujo. [91]regexpr: regular expression like Perl/Ruby in Haskell. * RJson 0.1. Uploaded by Alex Drummond. [92]RJson: A reflective JSON serializer/parser.. 83. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/fec-0.1 84. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/dataenc-0.10.2 85. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.3 86. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.2 87. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/reactive-0.3 88. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.1 89. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/djinn-2008.1.18 90. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Etherbunny-0.3 91. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.2.0 92. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/RJson-0.1 * regexpr 0.1.7. Uploaded by Yoshikuni Jujo. [94]regexpr: regular expression like Perl/Ruby in Haskell. * reactive 0.2. Uploaded by Conal Elliott. [95]reactive: Simple foundation for functional reactive programming. * srcinst 0.8.10. Uploaded by John Goerzen. [96]srcinst: Build and install Debian packages completely from source. * dfsbuild 1.0.2. Uploaded by John Goerzen. [97]dfsbuild: Build Debian From Scratch CD/DVD images. * darcs-buildpackage 0.5.12. Uploaded by John Goerzen. [98]darcs-buildpackage: Tools to help manage Debian packages with Darcs. * anydbm 1.0.5. Uploaded by John Goerzen. [99]anydbm: Interface for DBM-like database systems. * HDBC-sqlite3 1.1.4.0. Uploaded by John Goerzen. [100]HDBC-sqlite3: Sqlite v3 driver for HDBC. * HDBC-postgresql 1.1.4.0. Uploaded by John Goerzen. [101]HDBC-postgresql: PostgreSQL driver for HDBC. * HDBC-odbc 1.1.4.0. Uploaded by John Goerzen. [102]HDBC-odbc: ODBC driver for HDBC. 94. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regexpr-0.1.7 95. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/reactive-0.2 96. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/srcinst-0.8.10 97. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/dfsbuild-1.0.2 98. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/darcs-buildpacka… 99. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/anydbm-1.0.5 100. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HDBC-sqlite3-1.1… 101. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HDBC-postgresql-… 102. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HDBC-odbc-1.1.4.0 * magic 1.0.7. Uploaded by John Goerzen. [103]magic: Interface to C file/magic library. * ListLike 1.0.1. Uploaded by John Goerzen. [104]ListLike: Generic support for list-like structures. * LDAP 0.6.3. Uploaded by John Goerzen. [105]LDAP: Haskell binding for C LDAP API. * hg-buildpackage 1.0.4. Uploaded by John Goerzen. [106]hg-buildpackage: Tools to help manage Debian packages with Mercurial. * HDBC 1.1.4. Uploaded by John Goerzen. [107]HDBC: Haskell Database Connectivity. * HSH 1.2.5. Uploaded by John Goerzen. [108]HSH: Library to mix shell scripting with Haskell programs. * editline 0.1. Uploaded by Judah Jacobson. [109]editline: Bindings to the editline library (libedit).. * pureMD5 0.1.1. Uploaded by Thomas DuBuisson. [110]pureMD5: MD5 implementations that should become part of a ByteString Crypto package.. * hmp3 1.4. Uploaded by Donald Stewart. [111]hmp3: An ncurses mp3 player written in Haskell. * binary-strict 0.2.1. Uploaded by Adam Langley. [112]binary-strict: Binary deserialisation using strict ByteStrings. 103. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/magic-1.0.7 104. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/ListLike-1.0.1 105. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/LDAP-0.6.3 106. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hg-buildpackage-… 107. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HDBC-1.1.4 108. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HSH-1.2.5 109. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/editline-0.1 110. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pureMD5-0.1.1 111. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hmp3-1.4 112. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/binary-strict-0.… * GLFW 0.3. Uploaded by Paul Liu. [113]GLFW: A binding for GLFW, An OpenGL Framework. * hbeat 0.1.1. Uploaded by Tim Docker. [114]hbeat: A simple step sequencer GUI.. * hackage2hwn 0.2.1. Uploaded by Donald Stewart. [115]hackage2hwn: Convert hackage = Hackage RSS feeds to Haskell Weekly News format. * tagsoup 0.4. Uploaded by Neil Mitchell. [116]tagsoup: Parsing and extracting information from (possibly malformed) HTML documents. * HaXml 1.19.2. Uploaded by Malcolm Wallace. [117]HaXml: Utilities for manipulating XML documents. * Emping 0.3.1. Uploaded by Hans VanThiel. [118]Emping: derives heuristic rules from nominal data. * hbeat 0.1. Uploaded by Tim Docker. [119]hbeat: A simple step sequencer GUI.. * Imlib 0.1.1. Uploaded by Cale Gibbard. [120]Imlib: Added by CaleGibbard, Sun Jan 13 22:26:59 PST 2008.. * pcre-light 0.2. Uploaded by Donald Stewart. [121]pcre-light: A small, efficient and portable regex library for Perl 5 compatible regular expressions. * YamlReference 0.8. Uploaded by Oren BenKiki. [122]YamlReference: YAML reference implementation. 113. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/GLFW-0.3 114. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hbeat-0.1.1 115. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hackage2hwn-0.2.1 116. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/tagsoup-0.4 117. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/HaXml-1.19.2 118. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Emping-0.3.1 119. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hbeat-0.1 120. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Imlib-0.1.1 121. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pcre-light-0.2 122. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/YamlReference-0.8 * ContArrow 0.0.4. Uploaded by Evgeny Jukov. [123]ContArrow: Control.Arrow.Transformer.Cont. * ContArrow 0.0.3. Uploaded by Evgeny Jukov. [124]ContArrow: Control.Arrow.Transformer.Cont. * mkcabal 0.4. Uploaded by Donald Stewart. [125]mkcabal: Generate cabal files for a Haskell project. * pcre-light 0.1. Uploaded by Donald Stewart. [126]pcre-light: A lightweight binding to PCRE. * YamlReference 0.7. Uploaded by Oren BenKiki. [127]YamlReference: YAML reference implementation. * Crypto 4.1.0. Uploaded by Dominic Steinitz. [128]Crypto: DES, Blowfish, AES, TEA, SHA1, MD5, RSA, BubbleBabble, Hexdump, Support for Word128, Word192 and Word256 and Beyond, PKCS5 Padding, Various Encryption Modes e.g. Cipher Block Chaining all in one package.. * containers 0.1.0.1. Uploaded by Ross Paterson. [129]containers: Assorted concrete container types. * ConfigFile 1.0.4. Uploaded by John Goerzen. [130]ConfigFile: Configuration file reading & writing. * MissingH 1.0.0. Uploaded by John Goerzen. [131]MissingH: Large utility library. * hslogger 1.0.4. Uploaded by John Goerzen. [132]hslogger: Versatile logging framework. 123. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/ContArrow-0.0.4 124. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/ContArrow-0.0.3 125. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/mkcabal-0.4 126. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pcre-light-0.1 127. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/YamlReference-0.7 128. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Crypto-4.1.0 129. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/containers-0.1.0… 130. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/ConfigFile-1.0.4 131. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/MissingH-1.0.0 132. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hslogger-1.0.4 * hslogger 1.0.2. Uploaded by John Goerzen. [133]hslogger: Versatile logging framework. * BerkeleyDB 0.3. Uploaded by John McCall. [134]BerkeleyDB: Bindings for Berkeley DB v1.x. * BitSyntax 0.3.2. Uploaded by Adam Langley. [135]BitSyntax: A module to aid in the (de)serialisation of binary data. * Hashell 0.15. Uploaded by Gwern Branwen. [136]Hashell: Simple shell written in Haskell. * binary-strict 0.2. Uploaded by Adam Langley. [137]binary-strict: Binary deserialisation using strict ByteStrings. * Shu-thing 1.1. Uploaded by Gwern Branwen. [138]Shu-thing: A vector shooter game. * zlib 0.4.0.2. Uploaded by Duncan Coutts. [139]zlib: Compression and decompression in the gzip and zlib formats. * i18n 0.2. Uploaded by Eugene Grigoriev. [140]i18n: Internationalization for Haskell. * pandoc 0.46. Uploaded by John MacFarlane. [141]pandoc: Conversion between markup formats. * hscolour 1.9. Uploaded by Malcolm Wallace. [142]hscolour: Colourise Haskell code.. 133. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hslogger-1.0.2 134. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/BerkeleyDB-0.3 135. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/BitSyntax-0.3.2 136. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Hashell-0.15 137. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/binary-strict-0.2 138. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Shu-thing-1.1 139. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/zlib-0.4.0.2 140. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/i18n-0.2 141. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/pandoc-0.46 142. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/hscolour-1.9 * regex-pcre 0.94.1. Uploaded by ChrisKuklewicz. [143]regex-pcre: Replaces/Enhances Text.Regex. * regex-posix 0.93.1. Uploaded by Chris Kuklewicz. [144]regex-posix: Replaces/Enhances Text.Regex. * regex-base 0.93.1. Uploaded by Chris Kuklewicz. [145]regex-base: Replaces/Enhances Text.Regex. * regex-compat 0.91. Uploaded by Chris Kuklewicz. [146]regex-compat: Replaces/Enhances Text.Regex. * haddock 2.0.0.0. Uploaded by David Waern. [147]haddock: Added by DavidWaern 143. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regex-pcre-0.94.1 144. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regex-posix-0.93… 145. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regex-base-0.93.1 146. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/regex-compat-0.91 147. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/haddock-2.0.0.0 Blog noise [148]Haskell news from the [149]blogosphere. 148. http://planet.haskell.org/ * [150]Scala Buzzzzings * [151]Taxicab Numbers * [152]Tuppence Tour of Haskell Concurrency Constructs * [153]Power of Functional Programming, its Features and its Future * [154]Monads in Python (with nice syntax!) * [155]Monads in Ruby (with nice syntax!) * [156]The Marvels of Monads (in C#) * [157]Pointfree programming in OCaml * [158]HSOE Chapter 3 * [159]Extra type safety using polymorphic types as first-level refinements * [160]Why you should use Haskell for your next domain specific language 149. http://haskell.org/haskellwiki/Blog_articles 150. http://patricklogan.blogspot.com/2008/01/scala-buzzzzings.html 151. http://python-tips-gw.blogspot.com/2008/01/taxicab-numbers.html 152. http://mult.ifario.us/p/tuppence-tour-of-haskell-concurrency-constructs 153. http://www.canerten.com/power-of-functional-programming-its-features-and-it… 154. http://www.valuedlessons.com/2008/01/monads-in-python-with-nice-syntax.html 155. http://www.valuedlessons.com/2008/01/monads-in-ruby-with-nice-syntax.html 156. http://blogs.msdn.com/wesdyer/archive/2008/01/11/the-marvels-of-monads.aspx? 157. http://alaska-kamtchatka.blogspot.com/2008/01/pointless-polymorphism.html 158. http://apocalisp.wordpress.com/2008/01/08/hsoe-chapter-3/ 159. http://blog.jbapple.com/2008/01/extra-type-safety-using-polymorphic.html 160. http://paulspontifications.blogspot.com/2008/01/why-haskell-is-good-for-emb… * [161]Record system headaches * [162]Programming Erlang * [163]Haskell syntax is not Java syntax; good or bad? * [164]Judging programming languages by the results * [165]One line binary reader in Haskell * [166]On the utility of functional programming * [167]The Rise Of Functional Programming: F#/Scala/Haskell and the failing of Lisp * [168]Seeqsuq: A Seeqpod URL Ripper (in Haskell) * [169]2008 predictions * [170]The Haskell Program Coverage Toolkit (part 1) 161. http://jpmoresmau.blogspot.com/2008/01/nested-records-headaches-in-haskell.… 162. http://www.oxtremists.co.uk/?p=68 163. http://jpmoresmau.blogspot.com/2008/01/haskell-syntax-is-not-java-syntax-go… 164. http://www.pvv.org/~alexanro/2008/01/11/judging-programming-languages-by-th… 165. http://tehgeekmeister.wordpress.com/2008/01/11/one-line-binary-reader-in-ha… 166. http://geekrant.wordpress.com/2008/01/12/on-the-utility-of-functional-progr… 167. http://www.brandonwerner.com/2008/01/13/the-rise-of-functional-programming-… 168. http://cmars232.blogspot.com/2008/01/seeqsuq-seeqpod-url-ripper-in-haskell.… 169. http://lambda-the-ultimate.org/node/2600#comment-39191 170. http://blog.unsafeperformio.com/?p=18 * [171]Haskell Code Coverage tool available * [172]A Little Lesson on Laziness and Unsafety * [173]Haskell's do syntax for python and ruby * [174]Error handling in Python: monads are too much for me * [175]Simple POSIX regular expression example * [176]Read the content of a file into a list of string * [177]How not to explain Haskell monads * [178]HStringTemplate: An Elegant, Functional, Nifty Templating Engine for Haskell. * [179]A (hopefully) painless introduction to monads * [180]Simple Type Inference in Haskell 171. http://leibnizdream.wordpress.com/2008/01/15/haskell-code-coverage-tool-ava… 172. http://mult.ifario.us/p/a-little-lesson-on-laziness-and-unsafety 173. http://www.valuedlessons.com/2008/01/recently-i-wrote-about-ways-to-add.html 174. http://ndanger.org/blog/2008/01/16/error-handling-in-python-monads-are-too-… 175. http://athashdollarpercent.blogspot.com/2008/01/simple-posix-regular-expres… 176. http://athashdollarpercent.blogspot.com/2008/01/read-content-of-file-into-l… 177. http://mvanier.livejournal.com/1205.html 178. http://fmapfixreturn.wordpress.com/2008/01/14/hstringtemplate-an-elegant-fu… 179. http://www.prairienet.org/~dsb/monads.htm 180. http://notvincenz.blogspot.com/2008/01/simple-type-inference-in-haskell.html * [181]Quality assurance for Haskell code via code coverage * [182]Getting started with Yi, the haskell editor * [183]Haskell Impressions, Part I * [184]Software Transactional Memory for F# * [185]One or so word summary of the programming languages I work with * [186]HStringTemplate: Turtles all the way * [187]Scraping my boilerplate: Generics instead of Records * [188]Functional Programming is Hard * [189]Erik Meijer: Evaluating Functional Programming Language Purity :: Video * [190]Solving XKCD's Ghost problem in Haskell: First player wins 181. http://blog.unsafeperformio.com/?p=18 182. http://nobugs.org/developer/yi/index.html 183. http://blog.safira.com/2008/01/haskell-impressions-part-i.html 184. http://cs.hubfs.net/blogs/hell_is_other_languages/archive/2008/01/16/4565.a… 185. http://berlinbrowndev.blogspot.com/2008/01/one-or-so-word-summary-of-progra… 186. http://fmapfixreturn.wordpress.com/2008/01/18/turtles-all-the-way/ 187. http://jpmoresmau.blogspot.com/2008/01/scraping-my-boilerplate-generics.html 188. http://blog.magenic.com/blogs/aarone/archive/2008/01/18/Functional-Programm… 189. http://channel9.msdn.com/ShowPost.aspx?PostID=374141 190. http://squing.blogspot.com/2008/01/first-player-wins-superghost.html * [191]Haskell Function calls and Parentheses * [192]an elementary proof of the undecidability of the halting problem * [193]Invasion of the multi-core machines * [194]Monads for Imperative Peeps * [195]Haskell Shuffling * [196]Notes on Haskell * [197]Functional Programming Languages * [198]Case Study: Using Haskell and HAppS for Openomy API v2.0 * [199]A Haskell Hackathon (in Japanese) * [200]Control.Parallel.Strategies introduction 191. http://berlinbrowndev.blogspot.com/2008/01/haskell-function-calls-and-paren… 192. http://www.bemuzed.com/lucasd/halting-poem.html 193. http://blog.susheelspace.com/?p=126 194. http://climbing-the-hill.blogspot.com/2008/01/haskell-monads-for-imperative… 195. http://brett-hall.blogspot.com/2008/01/haskell-shuffling.html 196. http://penberg.blogspot.com/2008/01/its-not-dead-yet.html 197. http://blog.inquirylabs.com/2008/01/20/functional-programming-languages/ 198. http://blog.openomy.com/2008/01/case-study-using-haskell-and-happs-for.html 199. http://d.hatena.ne.jp/yukoba/20080121/p1 200. http://thoughtpolice.stringsandints.com/index.cgi/code/haskell#parallel_str… * [201]'I asked the manager if they were considering using such languages. He replied that they had actually considered using Haskell for some smaller projects' * [202]Solving IO Sequencing in Haskell with a Monad * [203]Haskell Music * [204]Matching checklists using Haskell * [205]State monads * [206]Haskell is a very expressive language * [207]Counting Infinity * [208]Haskell, del.icio.us, and JSON * [209]It's time for Haskell in the web browser * [210]OpenGL programming with Haskell 201. http://pinderkent.blogsavy.com/archives/150 202. http://wry-observer.blogspot.com/2008/01/solving-io-sequencing-in-haskell-w… 203. http://samdanielson.com/2008/1/23/haskell-music 204. http://porg.es/blog/matching-checklists-using-haskell 205. http://mvanier.livejournal.com/1901.html 206. http://berlinbrowndev.blogspot.com/2008/01/haskell-is-very-expressive-langu… 207. http://muaddibspace.blogspot.com/2008/01/counting-infinity.html 208. http://mult.ifario.us/p/haskell-del-icio-us-and-json 209. http://pinderkent.blogsavy.com/archives/151 210. http://metavar.blogspot.com/2008/01/opengl-programming-with-haskell.html * [211]unfolds in scala * [212]Haskell Snippet: looking at foldl (also a java version) * [213]MatLab: Why OCaml and Haskell are not ready for general scientists -- missing libraries * [214]Problems in Lisp: Historical relics, poor FFI, libraries, forks * [215]On blub * [216]Refining Pipelines * [217]Purely functional recursive types in Haskell and Python * [218]Counting matches in a list * [219]SPJ on .NET Rocks * [220]Hackage, cabal and the google charts api * [221]Haskell Rocks! * [222]How many functions are there from () to ()? 211. http://scala-blogs.org/2008/01/roman-numerals-in-scala.html 212. http://berlinbrowndev.blogspot.com/2008/01/haskell-snippet-looking-at-foldl… 213. http://alexandermikhalev.blogspot.com/2008/01/why-ocaml-and-haskell-is-not-… 214. http://nightschool.near-time.net/news/2008/1/31/some-improvements-are-distr… 215. http://etalog.blogspot.com/2008/01/on-blub.html 216. http://alaska-kamtchatka.blogspot.com/2008/02/refining-pipelines.html 217. http://sigfpe.blogspot.com/2008/02/purely-functional-recursive-types-in.html 218. http://haskell101.wordpress.com/2008/02/03/counting-matches-in-a-list/ 219. http://weblogs.asp.net/gbarnett/archive/2008/02/06/something-that-when-unno… 220. http://community.livejournal.com/evan_tech/241080.html 221. http://l33tminion.livejournal.com/189554.html 222. http://sigfpe.blogspot.com/2008/02/how-many-functions-are-there-from-to.html Quotes of the Week * Peter: I hardly know Haskell, but I can already write some code much faster and easier than I could do in C/C++ (and I've been programming 2 decades in that language) * Miguel Mitrofanov: Since NaN /= NaN, I think, we should decipher 'NaN' as 'Not a NaN' * Achim Schneider: The essence of non-strictness, though, is another kind of story. Like a golem plowing half of the country until you remember that you placed him a bit absent-mindedly into your backyard and said 'plow', that still won't plow mountains. The essence of strictness is easy, though: get stuck on a stone, fall over and continue moving until you break. * monochrom: OCaml tells you 'map f xs is bad because it takes O(n) space'. Haskell tells you 'map f xs' is good because it takes O(1) space * ddarius: It says *right on the box* that it it's intended for *both* research and applications. * Clifford Beshers: Why Haskell? Medical researchers announced today that MRI studies reveal that the structure of the human brain is significantly different in adolescence than adulthood. * Larry O'Brien: I really had a hard time refactoring my Ruby into a packrat parser. This was due, in no small part, because of the difficulty in understanding the types being built-up in the data structure. The paper, in explicitly-typed Haskell: clear as a bell. My code's behavior on unit tests: virtually indistinguishable from random. * SuperGrade: Haskell kind of herds you into functional programming. There are advantages to this manner of coding, and I'm getting to thinking you should attempt code this way almost all of the time, regardless of language. * Berlin Brown: Haskell is readable, fast, and expressive. I like it. * Yaakov Nemoy: Changing the type of a function in Python will lead to strange runtime errors that take some work to debug, whereas, when I tinker with a program in Haskell, I already know it will work once it compiles. * Michael Reid: Learning Haskell has completely reversed my feeling that static typing is an old outdated idea. The power of Haskell's type system makes it feel like you are programming in a dynamic language to some degree, yet all of it is type-checked, and that is just *really* cool. * weavejester: I've come across many parser generators that are a dream to work with in comparison to lex and yacc. The best one I've found so far is Haskell's Parsec. * David Roundy: What's the good of having a haskell-programming computational linguist on board if we can't get static compile-time guarantees of grammatical correctness? * Bulat Ziganshin: When FP just pass all the functions and data required for specialization of generic algorithm, OOP provides interfaces, virtual functions, anonymous classes, delegates and lots of other interesting ways to hide the fact of lack of first-class functions :) * [Douglas] Adams: was interested in computing --- I think his reaction to being told about functional programming was to wonder what non-functional programming might be. * ezekiel: I find Haskell to be like Lisp and APL and Python all put together in a way that leads me quickly to a solid result. Other languages work, but the road to the result is bumpier. * AlanYx: I've found that Haskell's uber-strong, static type system does help me be productive, because it increases the class of bugs that can be found at compile time, forces thinking at a higher level, and can help avoid edits to existing code breaking things elsewhere in the code * anonymous: Closures in today's world are a 'language geek' feature. Unless done extremely carefully and in a way that supports the various skill levels of developers, they end up being unusable and unsupportable by anything less than computer language savants. In their inherent obscurity and complexity, 'language geek' style closures are about as anti-Java as you can get. * anonymous: I work in a Smalltalk shop, where we extend and maintain an application that has been around over a decade. During the maintenance part of our job, it would be really nice to have type declarations on variables. For maintenance, the more dependable information we have, the better! The fewer things that can escape as runtime exceptions, the better! * consultant barbie: Languages are hard. Let's write web frameworks and go shopping! About the Haskell Weekly News New editions are posted to [223]the Haskell mailing list as well as to [224]the Haskell Sequence and [225]Planet Haskell. [226]RSS is also available, and headlines appear on [227]haskell.org. Headlines are available as [228]PDF. To help create new editions of this newsletter, please see the [229]contributing information. Send stories to dons at galois.com. The darcs repository is available at darcs get [230]http://code.haskell.org/~dons/code/hwn/ 223. http://www.haskell.org/mailman/listinfo/haskell 224. http://sequence.complete.org/ 225. http://planet.haskell.org/ 226. http://sequence.complete.org/node/feed 227. http://haskell.org/ 228. http://code.haskell.org/~dons/code/hwn/archives/20080210.pdf 229. http://haskell.org/haskellwiki/HWN 230. http://code.haskell.org/~dons/code/hwn/

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ANN: nano-hmac 0.2.0
by Hitesh Jasani 12 Feb '08

12 Feb '08

nano-hmac provides bindings to OpenSSL's HMAC interface. With this release the set of hashing functions supported is: MD5, SHA, SHA1, SHA224, SHA256, SHA384, SHA512. If you're unfamiliar with HMAC's then you may want to check out the second link below where I explain a little bit about them in a blog entry. The hackage pages mentioned that they're not running haddock 2.0, so I don't know if the docs will generate. If not, you can see the docs online at the third link below. * http://hackage.haskell.org/cgi-bin/hackage-scripts/package/nano-hmac-0.2.0 * http://www.jasani.org/2008/02/nano-hmac-020-released.html * http://docs.jasani.org/nano-hmac/0.2.0/ Any and all comments/suggestions/criticisms/fortune-cookie-proverbs are welcome. Thanks, Hitesh

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