- Haskell - Haskell.org

Fw: one C compiler
by Scott J. 07 Aug '02

07 Aug '02

Hi, I still have another silly question. I read that the numeric functions like "sinus" etc. were brought in by Cnu-code to Haskell (gnumeric..?) How can Haskell than be compiled by the Haskell compiler? Thx Scott ----- Original Message ----- From: "Scott J." <jscott(a)planetinternet.be> To: "Lars Lundgren" <d95lars(a)dtek.chalmers.se> Cc: <haskell(a)haskell.org> Sent: Wednesday, August 07, 2002 7:52 PM Subject: Re: one C compiler > Yes I want to make Code written in C available to Haskell. > > But I worry bow about mixing different C compilers. > > E.g. for Windows there is a retargettable C compiler made by Jacob Navia > available for a low price (it is even free). > > See http://www.q-software-solutions.com/ .And on the other hand Microsoft > bundles all his compilers in Visual Studio. net . I don't know if I can use > code from C# available to Haskell. > > Regards > > Scott > ----- Original Message ----- > From: "Lars Lundgren" <d95lars(a)dtek.chalmers.se> > To: "Scott J." <jscott(a)planetinternet.be> > Sent: Wednesday, August 07, 2002 10:14 AM > Subject: Re: one C compiler > > > > On Tue, 6 Aug 2002, Scott J. wrote: > > > > > Hi, > > > > > > I want to know if I have to use the same c compiler with which GHC was > > > ported to windows or may I use other C compilers for poting C to GHC? > > > > > > > It is very hard to understand what it is you are asking. GHC is a compiler > > written in Haskell (Not C). What is it you are trying to do? Make some > > code written in C available to some code written in Haskell, or what? > > > > > > /Lars L > > > > > > > > _______________________________________________ > Haskell mailing list > Haskell(a)haskell.org > http://www.haskell.org/mailman/listinfo/haskell >

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Re: UTF-8 library
by Ashley Yakeley 07 Aug '02

07 Aug '02

At 2002-08-07 14:49, Alastair Reid wrote: >I think a proper working group is called for. I agree. -- Ashley Yakeley, Seattle WA

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Re: UTF-8 library
by Ashley Yakeley 07 Aug '02

07 Aug '02

At 2002-08-07 02:28, Axel Simon wrote: >encodeISO-8859-1 :: String -> [CChar] Word8, not CChar. -- Ashley Yakeley, Seattle WA

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Re: one C compiler
by Scott J. 07 Aug '02

07 Aug '02

Yes I want to make Code written in C available to Haskell. But I worry bow about mixing different C compilers. E.g. for Windows there is a retargettable C compiler made by Jacob Navia available for a low price (it is even free). See http://www.q-software-solutions.com/ .And on the other hand Microsoft bundles all his compilers in Visual Studio. net . I don't know if I can use code from C# available to Haskell. Regards Scott ----- Original Message ----- From: "Lars Lundgren" <d95lars(a)dtek.chalmers.se> To: "Scott J." <jscott(a)planetinternet.be> Sent: Wednesday, August 07, 2002 10:14 AM Subject: Re: one C compiler > On Tue, 6 Aug 2002, Scott J. wrote: > > > Hi, > > > > I want to know if I have to use the same c compiler with which GHC was > > ported to windows or may I use other C compilers for poting C to GHC? > > > > It is very hard to understand what it is you are asking. GHC is a compiler > written in Haskell (Not C). What is it you are trying to do? Make some > code written in C available to some code written in Haskell, or what? > > > /Lars L > > >

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Re: Efficiency of list indices in definitions
by Carl McTague 07 Aug '02

07 Aug '02

> Date: Wed, 7 Aug 2002 10:24:45 +1000 > From: Andrew J Bromage <ajb(a)spamcop.net> > > > A large part of what I'm looking for at the moment is simply to find a > > fast and efficient way to express cyclic graphs in Haskell because in > > a present research project I need to manipulate machines with hundreds > > and thousands of states and my current, simple implementation simply > > won't do: my jobs balloon in size and die. > > Using linear search to look up states is going to cause you > prohibitively bad behaviour beyond 30 or so states no matter what you > do. Some possibilities are: FGL (as previously mentioned), a > dictionary structure like FiniteMap or clever use of IORefs. OK, I guess I'll look into the FGL, FiniteMap and perhaps even (gasp) IORefs... > As a matter of interest, is all you are doing here converting regular > expressions into DFAs? If so, a modern algorithm which doesn't go > via NFAs might help a bit. I have some code if you would like it. Thanks for offering. I'm actually not doing regexp -> nfa (although I do dfa -> regexp followed by rewrite simplification to get nice, textual representations of machines). I'm actually studying periodic orbits of a special class of operators on regular language space. Carl

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Re: UTF-8 library
by George Russell 07 Aug '02

07 Aug '02

Ashley Yakeley wrote [snip] > Text encoded with ISO 8859-1 or UTF-8 is octets. If you want to use > CChars, you should then subsequently convert the Word8s into CChars. We were talking about converting CStrings, which are necessarily sequences of CChars. I have to say I do not relish the prospect of replacing the current peekCString interface by three functions which (1) translate a CString/CStringLen into [CChar] (2) translate a [CChar] into a [Word8] (3) translate a [Word8] into a String (and of course the inverse functions to go in the other direction.) If we want to do this, we certainly need to keep the existing functions since I certainly don't want to have to pass a String through three separate transformations just to make it suitable for C.

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SURVEY - Haskell editing (summary)
by Claus Reinke 07 Aug '02

07 Aug '02

I sent out the summary of results of our little Haskell editing survey yesterday, but they are still being held for moderator approval because of slight oversize.. While our moderator seems to be unavailable (hi, there!-), you can also find the summary from our project web page. Cheers, Claus "Refactoring Functional Programs" http://www.cs.ukc.ac.uk/research/groups/tcs/fp/Refactor/ ----- Original Message ----- From: <haskell-admin(a)haskell.org> To: <claus.reinke(a)talk21.com> Sent: Tuesday, August 06, 2002 11:01 PM Subject: Your message to Haskell awaits moderator approval > Your mail to 'Haskell' with the subject > > SURVEY - Haskell editing (summary) > > Is being held until the list moderator can review it for approval. > > The reason it is being held: > > Message body is too big: 22995 bytes but there's a limit of 20 KB > > Either the message will get posted to the list, or you will receive > notification of the moderator's decision. >

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Concurrency and Haskell
by mgross＠dorsai.org 07 Aug '02

07 Aug '02

A group of us at Brooklyn College (City University of New York) are in the latter stages of setting up a Mosix cluster that we would like to use for research on, among other things, parallel execution of Haskell code and run-time optimization of both automatic and programmed parallelization. I would greatly appreciate hearing from anyone who can provide advice on an appropriate bibliography on the language implementation and past work in this area (other than the code in the Haskell compilers and libraries, of course), approaches, ongoing work, etc. Also, I would be most interested in hearing from anyone interested in joining our effort (no problems with remote access to the cluster by way of SSH), or making arrangements for cooperation in research in this area, although, of course, access to our equipment will be subject to approval from "higher authorities" (however, note that I really don't expect difficulty here, since our administration has already shown considerable interest in supporting the project). Replies to the list will be read, but those who wish may mail me directly at mgross(a)dorsai.org. Thanks in advance for any replies. Murray Gross Adj. Lecturer, Brooklyn College, City University of New York

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Mailing List
by Adriano Ricardo Duma 07 Aug '02

07 Aug '02

Hi, my name is Adriano and i am a student of science computer. I liked to your accept to mailing list for teaching futures. Thanks. PS: my english is not very good, sorry. ------------------------------------------------------ ADRIANO RICARDO DUMA PUCPR - Pontifícia Universidade Católica do Paraná www.pucpr.br LAMI - Laboratório de Mídias Interativas http://www.lami.pucpr.br/users/adriano ------------------------------------------------------ ------------------------------------------------- This mail sent through IMP: http://horde.org/imp/

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Re: OT: haskell, .net, microsoft and vs
by Rijk J. C. van Haaften 07 Aug '02

07 Aug '02

>> What I'm more intersted in right now is this: they have an *excellent* >> development environment (Visual Studio) and have had it for years. But, >> as far as I know, ... I really >> couldn't use it to develop applications in any of the languages listed >A couple of years ago, I saw a demo of Visual Studio for Haskell, >based on links to a running Hugs interpreter. Daan Leijen was the >author, and I believe he later spent some time at Microsoft in Redmond, >specifically working with the Visual Studio programming team. However, >I suspect that VS for Haskell was more of a side interest and not a >real product for release. Daan, would you like to comment further? Well Daan is very, very, very busy, so I'll anser in his place. Visual Haskell, as Daan calls it, was (is) rather well suited as a real product for release, but licensing problems keep him from distributing it. Rijk-Jan van Haaften Utrecht University

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