- Haskell - Haskell.org

HDirect
by Johannes Goetz 11 Oct '03

11 Oct '03

Hi folks! Is there a binary distribution of HDirect that works with the current version of ghc? In case there isn't any, how do I compile the latest version from cvs? Johannes

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Re: About Haskell Thread Model
by Bill Halchin 10 Oct '03

10 Oct '03

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CFP: LL3; Submission deadline Oct. 17
by Jeremy Hylton 10 Oct '03

10 Oct '03

Call for Presentations Lightweight Languages Workshop (LL3) http://ll3.ai.mit.edu/ November 8, 2003 Cambridge, Ma., USA The Lightweight Languages Workshop series focuses on programming languages, tools, and processes that are usable and useful. Lightweight languages have been an effective vehicle for introducing new features to mainstream programmers. We encourage presentations on topics of interest to the community of lightweight language users and designers. We prefer topics that will interest a broad audience. We do not require the presentation of novel research ideas. We are looking for abstracts of talks to be given at the workshop. Send abstracts to ll3-submit(a)ai.mit.edu. See the full call for proposals <http://ll3.ai.mit.edu/cfp.html> for suggested topics. Deadlines --------- Submissions: Oct. 17, 2003 Notification: Oct. 24, 2003 Program Committee ----------------- Ken Anderson, BBN (co-chair) Jeremy Hylton, Python Software Foundation (co-chair) Geoffrey Knauth, BAE Systems Shriram Krishnamurthi, Brown University Erik Meijer, Microsoft WebData Dan Sugalski, Perl Foundation Greg Sullivan, MIT CSAIL For more information, email ll3(a)ai.mit.edu.

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About Haskell Thread Model
by Yang, Qing 10 Oct '03

10 Oct '03

Hello, I am a new learner of Haskell and I am interested in Haskell's concurrent model. Can somebody give me a brief intro about Haskell's thread model, like how the use-level threads are mapped to kernel thread and what scheduling mechanism that Haskell uses, or point me to some links or documents that I can learn from. Thanks, Qing Yang qing.yang(a)intel.com

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Haskell on the cover of a magazine!
by Daan Leijen 09 Oct '03

09 Oct '03

wxHaskell gets a two-page article in the october edition of the popular French PC magazine, L'Informaticien. The article is written by Frédéric Mazué, and gives an overview of wxWindows, wxHaskell, and compares the library against F# (the OCaml integration to .NET). For screenshots of the relevant pages, see: http://wxhaskell.sourceforge.net/screenshots.html#linformaticien Just think of all those thousands of French O'Caml programmers that will suddenly start to use Haskell ;-) All the best, Daan Leijen. "wxHaskell est un outil d'ores et déjà remarquable et d'une grande fiabilité. Examinons de plus près ce dont il s'agit." "En raison de toutes ses qualités, la popularité de Haskell va donc croissant"

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non blocking System.system?
by John Meacham 09 Oct '03

09 Oct '03

I was curious if there was a version of System.system floating about which doesn't block all threads when doing concurrency? just doing an actual fork and exec isn't sufficient because I need to do haskell things (like write to MVars) after the spawned app finishes. I imagine this might be written by catching sigCHLD and writing to an mvar, but I can't seem to get at the siginfo_t structure from the haskell signal callback to find out the pid of the process which died. John -- --------------------------------------------------------------------------- John Meacham - California Institute of Technology, Alum. - john(a)foo.net ---------------------------------------------------------------------------

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Fwd: non blocking System.system?
by r2yang＠engmail.uwaterloo.ca 08 Oct '03

08 Oct '03

I don't know what happened, but it seems some e-mails go in my address which should direct to haskell mailing list. rui ----- Forwarded message from John Meacham <john(a)repetae.net> ----- Date: Wed, 8 Oct 2003 14:02:46 -0700 From: John Meacham <john(a)repetae.net> Reply-To: John Meacham <john(a)repetae.net> Subject: non blocking System.system? To: haskell(a)haskell.org I was curious if there was a version of System.system floating about which doesn't block all threads when doing concurrency? just doing an actual fork and exec isn't sufficient because I need to do haskell things (like write to MVars) after the spawned app finishes. I imagine this might be written by catching sigCHLD and writing to an mvar, but I can't seem to get at the siginfo_t structure from the haskell signal callback to find out the pid of the process which died. John -- --------------------------------------------------------------------------- John Meacham - California Institute of Technology, Alum. - john(a)foo.net --------------------------------------------------------------------------- _______________________________________________ Haskell mailing list Haskell(a)haskell.org http://www.haskell.org/mailman/listinfo/haskell ----- End forwarded message ----- ---------------------------------------- This mail sent through www.mywaterloo.ca

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constructor name clashes
by Ben_Yu＠asc.aon.com 08 Oct '03

08 Oct '03

Hi, all. I'm a newbie to Haskell so please bear with me if my questions sound silly. In coding Haskell, I feel very inconvenient that the name of data constructors for different types have to be different. Also, when declaring named fields of a type, such as data Data1 = Data1{ok1::Bool} data Data2 = Data2{ok2::Bool} the field names for different type also have to be unique. Isn't that annoying? Keeping all the names unique is no easy task in my opinion. Wouldn't it be nice if we can have something similar to structure fields in C? Or maybe this is already present and I'm just being ignorant? I know that we can use modules to introduce name spaces. But still, this is quite cumbersome. Thanks! Ben. This message is intended only for the addressee and may contain information that is confidential or privileged. Unauthorized use is strictly prohibited and may be unlawful. If you are not the intended recipient, or the person responsible for delivering to the intended recipient, you should not read, copy, disclose or otherwise use this message, except for the purpose of delivery to the addressee. If you have received this email in error, please delete and advise us immediately.

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haskell bindings for cairo
by Abraham Egnor 08 Oct '03

08 Oct '03

I've hacked together a haskell binding for the cairo vector graphics library (http://www.cairographics.org) It's still got much that needs improvement, but it's at the usable stage. A tarball is available at http://ofb.net/~abe/hscairo-0.1.tar.bz2 ; documentation and build instructions are included. Abe

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implement hash table
by r2yang＠engmail.uwaterloo.ca 08 Oct '03

08 Oct '03

Hi,all I'm a new one in this Haskell programming language. I have a program which involved a lot of computation tasks and it's quite inefficient,so I'm currently examing the possibility of using hash table in my data structure, can some one tell me how to implement it? I can't find much information about it. Thanks a lot Rui ---------------------------------------- This mail sent through www.mywaterloo.ca

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