The xmonad dev team is pleased to announce the 0.3 release of xmonad.
xmonad: a tiling window manager
http://xmonad.org
About:
xmonad is a tiling window manager for X. Windows are arranged
automatically to tile the screen without gaps or overlap,
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070807
Issue 64 - August 07, 2007
---
Welcome to issue 64 of HWN, a weekly newsletter coveri
Hac 2007 II
Haskell Hackathon 2007 II
October 5-7, 2007
Freiburg, Germany
http://haskell.org/haskellwiki/Hac_2007_II
We are pleased to announce the 2n
mfn-haskell:
> Dear Haskellers,
>
> You may be interested in the Reduceron:
>
> http://www-users.cs.york.ac.uk/~mfn/reduceron/index.html
>
> Here is a flavour:
>
> "The Reduceron is a processor for executing Haskell programs on FPGA
> with the aim of exploring how custom architectural feature
federico.squartini:
> Hello dear Haskellers,
>
> Could someone be kind and explain with some detail what are the
> differences between the two monads:
>
> Control.Monad.ST
> And
> Control.Monad.State
> ?
>
> They are both meant to model stateful computation but they are not the
> same monad. The
Bryan O'Sullivan, Don Stewart and John Goerzen are pleased, and frankly,
very excited to announce that were developing a new book for O'Reilly, on
practical Haskell programming. The working title is Real-World Haskell.
The plan is to cover the major techniques used to write serious,
real-world Ha
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070507
Issue 62 - May 07, 2007
---
Welcome to issue 62 of HWN, a weekly newsletter covering
federico.squartini:
> Sorry, I was very silly!
>
> This is the correct version of the program using the doFromto loop.
> And it runs fast! I hope there are no further mistakes.
> Thanks Axel.
>
> time ./IOMutUnbUnsafe
> 499
> real 0m0.708s
> user 0m0.573s
> sys 0m0.008s
Here's an improved ve
federico.squartini:
>
>Of course I know that the list version is very unfair, but I
>wanted to see what was the trade off between elegance and
>speed.
>Regarding whether low level programming makes sense or not,
>I was just curious to see what are the limits of Haskell.
>Mo
ttmrichter:
>
>On Fri, 2007-27-04 at 15:37 -0400, Taillefer, Troy (EXP)
>wrote:
>
> I really enjoy Functional programming (at least until I try to do
> something serious then frustration sets in). I can't produce software
> in a timely and cost effective fashion without a large body of hi
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070427
Issue 61 - April 27, 2007
---
Welcome to issue 61 of HWN, a weekly newsletter coverin
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070412
Issue 60 - April 12, 2007
---
Welcome to issue 60 of HWN, a weekly newsletter coverin
twanvl:
> Hi,
>
> Mostly for fun, and to see how well it would work, I made a
> generalized/improved variant of the ReadP parser library.
>
> Unlike ReadP ParseP can handle any type of token, and actually generates
> error messages in case something goes wrong. It is also possible to use
> thi
claus.reinke:
> installing the extra libraries, other examples include versions of
> Data.ByteString _not_ based on the famous paper, _not_ supporting
> essential optimisations, or _not_ supporting API safety fixes). So
Lovely Claus!
Do not despair about ByteStrings though. We plan to update t
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070312
Issue 59 - March 12, 2007
---
Welcome to issue 59 of HWN, a weekly newsletter coverin
Dave:
> I am stumped trying to print values returned from IO functions.
> How to print values returned from getEnv and getEnvironment?
>
import System.Environment
main = do
args <- getArgs
env <- getEnvironment
print args
print env
You evaluate the IO a
duncan.coutts:
> On Fri, 2007-03-09 at 00:39 +0100, Wolfgang Jeltsch wrote:
>
> > > > First, what organization is Haskell.org?
> > >
> > > That would be us, right here. Anyone who is interested enough in
> > > Haskell to be involved in mailing lists, IRC, distributing library code
> > > and tools
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070305
Issue 58 - March 05, 2007
---
Welcome to issue 58 of HWN, a weekly newsletter coverin
duncan.coutts:
> On Sun, 2007-02-25 at 18:57 -0800, Stefan O'Rear wrote:
>
> > Haskell, now:
> > * Very much slower than C
> > * Very much easier to use than C
> > * Very easy to interface with C
> >
> > So I think we should do the same. It even shows in the Shootout - the
> > programs that a
fw:
> * John Meacham:
>
> >> Clean has also declined in these benchmarks but not that much as Haskell.
> >> According to John van Groningen Clean's binary-trees program in the
> >> previous
> >> shootout version used lazy data structure which resulted in lower memory
> >> usage and much faster ex
hoelz:
> I recently checked out the X11 package from darcs.haskell.org, and I'd
> like to check out more of the source from the darcs repository. I'm
> still unfamiliar with darcs; how do I check out the whole source tree?
>
> Thanks,
> Rob Hoelz
We're moving from a cathedral to a more distribut
hoelz:
> I've been pouring over the Xlib bindings for Haskell, and I've come
> across the following code:
>
> peekXButtonEvent p = do
> root<- #{peek XButtonEvent,root} p
> subwindow <- #{peek XButtonEvent,subwindow} p
> time<- #{peek XButtonEv
This little tool has been kicking around on my harddrive for a month or
two now, so time to release!
I'm pleased to announce the first release of urlcheck, an parallel link
checker, written in Haskell.
Frustrated with the resources and time consumed by 'linkchecker', when
preparing the weekly new
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070131
Issue 57 - January 31, 2007
---
Welcome to issue 57 of HWN, a weekly newsletter cover
himself:
> It would be enough to exhaustively analyse examples of the kind I gave:
> single algorithm with fast non-Haskell implementation but very slow in
> Haskell. The article describes laborious but unsuccessful attempt to
> pinpoint what makes Haskell over 500 times slower than SML on a geneti
dons:
>
> Binary: high performance, pure binary serialisation for Haskell
> --
>
> The Binary Strike Team is pleased to announce the release of a new,
> pure, efficient binary serialisation library for Haskell, now
Binary: high performance, pure binary serialisation for Haskell
--
The Binary Strike Team is pleased to announce the release of a new,
pure, efficient binary serialisation library for Haskell, now available
from Hac
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070109
Issue 56 - January 09, 2007
---
Welcome to issue 56 of HWN, a weekly newsletter cover
ashley:
> For code designed not to do anything, HNOP has high hopes. I have
> recently split the project into two Cabal packages: "nop", a library of
> no-op services, and "hnop", a program that uses nop to do nothing. Both
> packages can be found in this repository:
>
> darcs get http://sema
---
Haskell Weekly News
http://sequence.complete.org/hwn/20070102
Issue 55 - January 02, 2007
---
Welcome to issue 55 of HWN, a weekly newsletter cover
---
Haskell Weekly News
http://sequence.complete.org/hwn/20061220
Issue 54 - December 20, 2006
---
Welcome to issue 54 of HWN, a weekly newsletter cove
---
Haskell Weekly News
http://sequence.complete.org/
Issue 53 - December 12, 2006
---
Welcome to issue 53 of HWN, a weekly newsletter covering develop
notyycn:
>
>hello,all,
>
> I am new to haskell,and have read some tutorial, but I
>would like to read some "real" code from "real" haskell
>project, I believe this will help me study and use haskell
>quickly.
>
> would anyone please give me some suggestion about
>o
This is DList, 0.1
I've cabalised, and packed up a small difference lists module. In case
you've not used them, they are a Haskell idiom for implementing O(1)
append and snoc, using functions to represent lists.
I use them from time to time, and thought it a good idea to finally pack
them into a
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 52 - December 05, 2006
---
Welcome to issue 52 of HWN, a weekly newsletter covering de
taralx:
> On 12/2/06, Jeremy Shaw <[EMAIL PROTECTED]> wrote:
> >In any case, I wanted to release this library now since I know other
> >people are already duplicating some (all?) of the work :) I am quite
> >happy to accept patches. If someone else has a better code base
> >already, I am happy to j
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 51 - November 28, 2006
---
Welcome to issue 51 of HWN, a weekly newsletter covering de
PQC: QuickCheck in the Age of Concurrency
An SMP parallel QuickCheck driver
Do you:
* Have (or want) lots of QuickCheck properties?
* Run the
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 50 - November 22, 2006
---
Welcome to issue 50 of HWN, a weekly newsletter covering de
Hac 2007
The 2007 Haskell Hackathon
January 10-12, 2007
Oxford University Computing Laboratory
http://haskell.org/haskellwiki/Hac_2007
Following the
The topic of improving exception diagnosis in Haskell is hot at the
moment, and I'm pleased to announce the release of LocH, a small Haskell
module providing source location-specific error messages and debugging
strings for Haskell code.
It uses the compiler-expanded 'assert' token, rather than c
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 49 - November 14, 2006
---
Welcome to issue 49 of HWN, a weekly newsletter covering de
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 48 - November 08, 2006
---
Welcome to issue 48 of HWN, a weekly newsletter covering de
waldmann:
> We're planning a local Haskell meeting on December 5th
> in Leipzig, Germany. The meeting will be hosted by IBA Consulting.
> It will be quite informal, with some very short talks
> (most probably in German). Interessenten sind herzlich eingeladen.
> Details and (free) registration: htt
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 47 - October 31, 2006
---
Welcome to issue 47 of HWN, a weekly newsletter covering dev
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 46 - October 24, 2006
---
Welcome to issue 46 of HWN, a weekly newsletter covering dev
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 45 - October 19, 2006
---
Welcome to issue 45 of HWN, a weekly newsletter covering dev
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 44 - October 10, 2006
---
Welcome to issue 44 of HWN, a weekly newsletter covering de
Hey all,
The Google Summer of Code is now wrapping up, and Haskell.org's projects
have been quite successful. The full details will available soon in a
report we're preparing (next week some time), though quite likely you
have already seen the various student projects previously announced to
the c
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 43 - October 03, 2006
---
Welcome to issue 43 of HWN, a weekly newsletter covering de
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 42 - September 27, 2006
---
Welcome to issue 42 of HWN, a weekly newsletter covering d
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 41 - September 18, 2006
---
Welcome to issue 41 of HWN, a weekly newsletter covering
colin:
> SmallCheck: another lightweight testing library in Haskell.
>
> Folk-law: if there is any case in which a program fails, there is almost
> always a simple one.
>
> SmallCheck is similar to QuickCheck (Claessen and Hughes 2000-)
> but instead of a sample of randomly generated values, Smal
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 40 - August 14, 2006
---
Welcome to issue 40 of HWN, a weekly newsletter covering deve
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 39 - July 03, 2006
---
Welcome to issue 39 of HWN, a weekly newsletter covering devel
bringert:
> > noop :: IO () -- generalise to other Monads?
> >
> >This would actually not be too hard to write, given my existing work,
> >and then of course the executable would simply be a thin wrapper.
>
> As suggested above, this patch moves the core functionality to a
> library module, Co
mvanier:
> Incidentally, on my machine the compiled code is 2759360 bytes long
> unstripped and 1491240 stripped. One has to wonder what all those bytes
> are doing. I hope this doesn't sound petty; I love haskell and ghc, but
> 2.8 meg for a no-op program seems a bit excessive.
Hmm. Sounds l
Alistair_Bayley:
> > From: [EMAIL PROTECTED]
> > [mailto:[EMAIL PROTECTED] On Behalf Of Ashley Yakeley
> >
> > HNOP does nothing. Here's a sample session to illustrate:
> >
> > $ ./hnop
> > $
> >
> > The code is written entirely in plain Haskell 98 and makes no
> > use of FFI
> > or impure fu
chad.scherrer:
>Wow. 64 times as fast for this run, with almost no effort on
>my part. Granted, wc is doing more work, but the number of
>words and characters aren't interesting to me in this case,
>anyway. I can't imagine (implementation time)*(execution
>time) being much short
A new version of hmp3 has been released, version 1.1
hmp3 is a curses-based mp3 player written in Haskell. It is designed to be
simple, fast and robust.
This is mostly a maintenance, release, fixing support for ghc 6.4.2.
However, you do get some new features:
* Enable searching of the enti
dons:
> Hey all,
>
> Inspired by a comment from Shae Erisson, I added a little 5 line script
> to darcs-graph[1], to display the commit activity of _remote_ darcs
> repositories.
>
> Here are the activity graphs for a selection of projects in the community:
>
> http://www.cse.unsw.edu.au/~d
---
Haskell Weekly News
http://haskell.org/haskellwiki/HWN
Issue 38 - June 25, 2006
---
Welcome to issue 38 of HWN, a weekly newsletter covering devel
Hey all,
Inspired by a comment from Shae Erisson, I added a little 5 line script
to darcs-graph[1], to display the commit activity of _remote_ darcs
repositories.
Here are the activity graphs for a selection of projects in the community:
http://www.cse.unsw.edu.au/~dons/images/commits/commu
Welcome to issue 37 of HWN, a weekly newsletter covering developments
in the Haskell community. Each Monday, new editions are posted to
[1]the Haskell mailing list as well as to [2]the Haskell Sequence and
[3]Planet Haskell. [4]RSS is also available, and headlines appear on
[5]haske
I'm pleased to announce the release of lambdabot 4.0!
lambdabot is a stable, feature rich IRC bot based on a plugin framework.
lambdabot 4.0 comes with a suite of more than 50 plugins, including:
* a Haskell 98 interpreter
* two lambda calculus interpreters
* an unlambda interpreter
We are very pleased to announce that nine Haskell projects have been
selected to receive funding to the value of $45k under Google's 2006
Summer of Code program. A wide range of projects will be worked on,
contributing to the community important tools and libraries. The
students have until August
Haskell Weekly News: May 22, 2006
Welcome to issue 36 of HWN, a weekly newsletter covering developments
in the Haskell community. Each Monday, new editions are posted to
[1]the Haskell mailing list as well as to [2]the Haskell Sequence and
[3]Planet Haskell. [4]RSS
rahn:
> Donald Bruce Stewart wrote:
>
> >watchdogIO :: Int -- milliseconds
> > -> IO a -- expensive computation
> > -> IO a -- cheap computation
> > -> IO a
>
> I'm not satisfied by the given fun
waldmann:
> What is the idiomatic way to say in (ghc) Haskell:
> "run this computation for at most x seconds"
> (e. g. it returns Boolean; imagine a primality test)
> so I want something :: Int -> a -> Maybe a
> with the guarantee that the result is
> Just x with x in whnf, or Nothing.
> I gu
Haskell Weekly News: May 8, 2006
Welcome to issue 35 of HWN, a weekly newsletter covering developments
in the Haskell community. Each Monday, new editions are posted to
[1]the Haskell mailing list as well as to [2]the Haskell Sequence and
[3]Planet Haskell. [4]RSS
Haskell Weekly News: May 1, 2006
Welcome to issue 34 of HWN, a weekly newsletter covering developments
in the Haskell community. Each Monday, new editions are posted to
[1]the Haskell mailing list as well as to [2]the Haskell Sequence and
[3]Planet Haskell. [4]RSS
ashley:
> Donald Bruce Stewart wrote:
>
> >Interface:
> >http://www.cse.unsw.edu.au/~dons/fps/Data.FastPackedString.html
>
> Given that FastString turns out to be an array of Word8, why are you using
> Char at all?
Convenience. Some historical legacy
I'm pleased to announce version 0.2 of FPS, the fast, packed string
library for Haskell.
FPS allows you to have time and space efficient arrays of bytes accessed
via a List interface, along with fast IO on those strings. FPS is, in
particular, suited for heavy duty string and IO projects. It is
Haskell Weekly News: April 17, 2006
Greetings, and thanks for reading issue 33 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS is al
Haskell Weekly News: April 10, 2006
Greetings, and thanks for reading issue 32 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS is al
dons:
> I managed, with the help of some custom hacks, to convert Simon's
> tarball of the haskell@ archives from 1990-2000 into html.
By the way, this was in the context of writing up the HWN-style news
over that decade, here:
http://haskell.org/haskellwiki/Old_news
-- Don
__
I managed, with the help of some custom hacks, to convert Simon's
tarball of the haskell@ archives from 1990-2000 into html.
I've hosted the lot here:
http://www.cse.unsw.edu.au/~dons/haskell-1990-2000/threads.html
I'm not sure these archives are available anywhere else, other than the
tarbal
Haskell Weekly News: April 03, 2006
Greetings, and thanks for reading issue 31 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS i
Haskell Weekly News: March 27, 2006
Greetings, and thanks for reading issue 30 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS i
paul:
> Neil Mitchell wrote:
>
> >>>- Larger memory footprint
> >
> >
> >You are talking about GHC, not Haskell. Take a look at nhc98, which
> >has a small memory footprint.
>
> I don't want to get into a compiler flame war. The fact is that if you
> want to do huge datasets or very fast compu
Haskell Weekly News: March 20, 2006
Greetings, and thanks for reading issue 29 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS i
claus.reinke:
> >So, the frontpage now has recent news, with our icfp prize at the top.
> >Opinions?
>
> do I understand correctly that the top items under "News" will be
> updated manually and less frequently, to hold items that are deemed
> more important, or more permanent, than the usual hea
sebastian.sylvan:
> The ICFP boasting could be moved elsewhere (perhaps put the quote at
> the very top under the logo), the rest of the items seem "regular"
> enough to be popped off the news list just like any other HWN-type
> news.
> The only regularly occuring news that really need to stick aro
sebastian.sylvan:
> On 3/17/06, Donald Bruce Stewart <[EMAIL PROTECTED]> wrote:
> > rjmh:
> > > >With a view to this I started collecting just the announcements on a
> > > >`feed' here:
> > > > http://www.cse.unsw.edu.au/~dons/code/hwn/an
antti-juhani:
> Donald Bruce Stewart wrote:
> > Well, there is a way -- it's fairly easy with the right regex -- but
> > is it really ambiguous? Do people find it confusing? What do other sites do?
>
> Yes, it's annoying (it isn't ambigous right now, but
unambiguous by changing
> the month to a word instead of a number? Just curious...
>
>Jared.
>
> On 3/16/06, Donald Bruce Stewart <[EMAIL PROTECTED]> wrote:
> > rjmh:
> > > >With a view to this I started collecting just the announcements on a
> > &g
rjmh:
> >With a view to this I started collecting just the announcements on a
> >`feed' here:
> > http://www.cse.unsw.edu.au/~dons/code/hwn/announce.html
> >
> >These should serve as a basis for the content, I think.
>
> Can you add an actual date? Seeing things dated a few days ago does
> cont
sebastian.sylvan:
> On 3/13/06, Donald Bruce Stewart <[EMAIL PROTECTED]> wrote:
> >
> > Haskell Weekly News: March 13, 2006
> >
> >Greetings, and thanks for reading issue 28 of HWN, a weekly newsletter
> >covering development
Haskell Weekly News: March 13, 2006
Greetings, and thanks for reading issue 28 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS i
Haskell Weekly News: March 06, 2006
Greetings, and thanks for reading issue 27 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS i
A new version of hmp3 has been released, version 1.0.
All features that I'm interested in are implemented (and it appears to be
extremely stable, running non-stop for the last 3 months on one machine). This
release adds the ability to dynamically reconfigure the colours using a
configuration fil
benjamin.franksen:
> Please, can anyone help me with this problem:
>
> I just downloaded hs-plugins version 1.0-rc0. (BTW, the stable version
> is not accessible). I configure it (according to the README) and
> everything seems to be ok. However when I try to build it, I get:
>
> aare: .../hask
gerwin.klein:
> Hi,
>
> is any of you aware of activities that aim to translate Haskell into
> interactive theorem provers like PVS or Isabelle/HOL? (automatically or
> manually).
>
> We know about the Programatica project and Brian Huffman's work, but turned
> up little else.
Hey Gerwin,
On
Haskell Weekly News: February 27, 2006
Greetings, and thanks for reading issue 26 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS
cubranic:
> On 2/21/06, Graham Klyne <[EMAIL PROTECTED]> wrote:
> > In making such changes, please bear in mind "Cool URIs Don't Change":
> >
> > http://www.w3.org/Provider/Style/URI
> >
> > This isn't to say "don't", but where possible, provide some redirection
> > from the
> > old name to the n
Haskell Weekly News: February 20, 2006
Greetings, and thanks for reading issue 25 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS
Haskell Weekly News: February 13, 2006
Greetings, and thanks for reading issue 24 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS
Haskell Weekly News: February 06, 2006
Greetings, and thanks for reading issue 23 of HWN, a weekly newsletter
covering developments in the Haskell community. Each Monday, new
editions are posted to [1]the Haskell mailing list and to [2]The
Haskell Sequence. [3]RSS
Haskell Weekly News: January 30, 2006
Greetings, and thanks for reading the 22nd issue of HWN, a weekly
newsletter for the Haskell community. Each Monday, new editions are
posted to [1]the Haskell mailing list and to [2]The Haskell Sequence.
[3]RSS is also availab
Haskell Weekly News: January 23, 2006
Greetings, and thanks for reading the 21st issue of HWN, a weekly
newsletter for the Haskell community. Each Monday, new editions are
posted to [1]the Haskell mailing list and to [2]The Haskell Sequence.
[3]RSS is also availab
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