May 2001 - Haskell - Haskell.org

Re: The next step
by Frank Atanassow 28 May '01

28 May '01

Simon Marlow wrote (on 28-05-01 10:17 +0100): > It's not propaganda. The fact is if any of the standard libraries use > the LGPL, then some people will be prevented from using them. That's > the last thing we want, right? Now you might argue from a moral > standpoint that the companies that these people work for are basing > their business models on intellectual property and therefore deserve > everything they get, but we're not trying to do open source advocacy > here, we're just trying to put together a set of libraries that everyone > can use. Some people don't see it that way. They would say that the GPL is the _less_ restrictive license because it ensures that everybody benefits (equally) from everybody else's improvements. From that perspective, companies benefit also since they may use and improve the code, provided they "publish" it. Will they lose some potential revenue that way? Possibly. But as you suggested, the idea is to make the audience as _wide_ as possible, not as _rich_ as possible. ;) -- Frank Atanassow, Information & Computing Sciences, Utrecht University Padualaan 14, PO Box 80.089, 3508 TB Utrecht, Netherlands Tel +31 (030) 253-3261 Fax +31 (030) 251-379

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RE: Building Programs Again
by Simon Marlow 28 May '01

28 May '01

> I am going to install hmake and upgrade to ghc 5 but in the > meantime I decided to use make. > > I am puzzled however. Presumably building a module that > imports a module needs the .hi file and therefore the > makefile should be something like this: > > Tagsv1.o : Tagsv1.hs > ghc -c Tagsv1.hs -package lang > > Basev1.o : Tagsv1.hi Basev1.hs > ghc -c Basev1.hs -package lang > > But if I do this then make complains if I want to see what it > will generate > > [dom@lhrtba8fd85 maketest]$ make -n > ghc -c Tagsv1.hs -package lang > make: *** No rule to make target `Tagsv1.hi', needed by > `Basev1.o'. Stop. > > Running make works as by the time the rule gets executed the > .hi file exists. > > Can anyone suggest something better? GHC's documentation has some useful tips on using make with Haskell: http://www.haskell.org/ghc/docs/latest/set/separate-compilation.html#USI NG-MAKE Chees, Simon

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Building Programs Again
by Steinitz, Dominic J 28 May '01

28 May '01

I am going to install hmake and upgrade to ghc 5 but in the meantime I decided to use make. I am puzzled however. Presumably building a module that imports a module needs the .hi file and therefore the makefile should be something like this: Tagsv1.o : Tagsv1.hs ghc -c Tagsv1.hs -package lang Basev1.o : Tagsv1.hi Basev1.hs ghc -c Basev1.hs -package lang But if I do this then make complains if I want to see what it will generate [dom@lhrtba8fd85 maketest]$ make -n ghc -c Tagsv1.hs -package lang make: *** No rule to make target `Tagsv1.hi', needed by `Basev1.o'. Stop. Running make works as by the time the rule gets executed the .hi file exists. Can anyone suggest something better? Dominic. ------------------------------------------------------------------------------------------------- 21st century air travel http://www.britishairways.com

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RE: (no subject)
by Simon Peyton-Jones 28 May '01

28 May '01

This looks like a good thread to move to haskell-cafe(a)haskell.org http://haskell.org/mailinglist.html Simon | -----Original Message----- | From: Rab Lee [mailto:leelati@yahoo.com] | Sent: 26 May 2001 08:48 | To: haskell(a)haskell.org | Subject: (no subject) | | | hi, i'm having a bit more touble, can anyone help me | or give me any hints on how to do this : | "x 2 3 4" = ("x", [2, 3, 4]) | | __________________________________________________ | Do You Yahoo!? | Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/ _______________________________________________ Haskell mailing list Haskell(a)haskell.org http://www.haskell.org/mailman/listinfo/haskell

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Re: (no subject)
by Ashley Yakeley 28 May '01

28 May '01

At 2001-05-26 00:47, Rab Lee wrote: >hi, i'm having a bit more touble, can anyone help me >or give me any hints on how to do this : >"x 2 3 4" = ("x", [2, 3, 4]) Generally we don't solve homework for people. Unless they're studying under Prof. Karczmarczuk, of course. -- Ashley Yakeley, Seattle WA

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ghc-5.00.1 is available
by Julian Seward (Intl Vendor) 26 May '01

26 May '01

The (Interactive) Glasgow Haskell Compiler -- version 5.00.1 ============================================================== We are pleased to announce a new patchlevel release of the Glasgow Haskell Compiler (GHC), version 5.00.1. The source distribution is freely available via the World-Wide Web and through anon. FTP, under a BSD-style license. See below for download details. Pre-built packages for Linux, FreeBSD, and Solaris(sparc) are also available. Haskell is a standard lazy functional programming language; the current language version is Haskell 98, agreed in December 1998. GHC is a state-of-the-art programming suite for Haskell. Included is an optimising compiler generating good code for a variety of platforms, together with an interactive system for convenient, quick development. The distribution includes space and time profiling facilities, a large collection of libraries, and support for various language extensions, including concurrency, exceptions, and foreign language interfaces (C, C++, whatever). A wide variety of Haskell related resources (tutorials, libraries, specifications, documentation, compilers, interpreters, references, contact information, links to research groups) are available from the Haskell home page at http://www.haskell.org/ GHC's Web page lives at http://www.haskell.org/ghc/ What's new in 5.00.1 ====================== This is a bug-fix release. Most reported bugs in 5.00 have been fixed, including a substantial number of show-stopping bugs. The system should be much more usable for more people. Upgrading to 5.00.1 is recommended. To all those who tried out 5.00 and reported bugs, we thank you for your feedback and patience. At the moment there is no Win32 build of 5.00 or 5.00.1 available. We decided to push Win32 support to the 5.02 release, so as not to delay 5.00.1 any further. What's new in 5.00 ==================== 5.00 has been majorly revamped since the previous stable version, 4.08.2. This should be a stable release. Major changes since 4.08.2 are: - An interactive system, similar in style to Hugs. You can interactively load and unload modules, run expressions, ask the types of things. Module dependencies are tracked and chased automatically. Combinations of compiled and interpreted modules may be used. All the GHC libraries are available in interactive mode, as are most of the Glasgow extensions to Haskell 98. Compilation in interactive mode (to bytecode) is about three times faster than compiling to object code. - Batch compilation of multiple modules at once, with automatic dependency chasing. For large programs this can halve compilation times, and removes the need for Makefiles. - Enhanced package (library) management system. Packages may be installed and removed from an installation using the ghc-pkg tool. - Initial Unicode support - the Char type is now 31 bits. - Sparc native code generator, giving much faster compilation on sparcs. (Native code generation for x86s has been available for a while). - Improved heap profiling - you can restrict heap profiles by type, closure description, cost centre, and module. - Support for the latest Foreign Function Interface (FFI) proposals. Marcin Kowalczyk's hsc2hs tool is included. - Language extensions: parallel list comprehensions and functional dependencies. - The usual huge collection of bug fixes. Most reported bugs have been fixed. For full details see the release notes: http://www.haskell.org/ghc/docs/5.00/set/release-5-00.html How to get it =============== The easy way is to go to the WWW page, which should be self-explanatory: http://www.haskell.org/ghc/ We supply binary builds in .rpm/.deb form for all you Linux junkies out there, and in InstallShield form for Windows folks. Everybody else gets a .tar.gz which can be installed where you want. Once you have the distribution, please follow the pointers in the README file to find all of the documentation about this release. On-line GHC-related resources =============================== Relevant URLs on the World-Wide Web: GHC home page http://www.haskell.org/ghc/ Haskell home page http://www.haskell.org/ comp.lang.functional FAQ http://www.cs.nott.ac.uk/~gmh/faq.html System requirements ===================== To compile programs with GHC, you need a machine with 32+MB memory, GNU C and perl. This release is known to work on the following platforms: * i386-unknown-{linux,freebsd,mingw32} * sparc-sun-solaris2 Ports to the following platforms should be relatively easy (for a wunderhacker), but haven't been tested due to lack of time/hardware: * hppa1.1-hp-hpux{9,10} * i386-unknown-solaris2 * alpha-dec-osf{2,3} * mips-sgi-irix{5,6} * {rs6000,powerpc}-ibm-aix The builder's guide included in distribution gives a complete run-down of what ports work; an on-line version can be found at http://www.haskell.org/ghc/docs/5.00/building/building-guide.html Mailing lists =============== We run mailing lists for GHC users and bug reports; to subscribe, use the web interfaces at http://www.haskell.org/mailman/listinfo/glasgow-haskell-users http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs There are several other haskell and ghc-related mailing lists on www.haskell.org; for the full list, see http://www.haskell.org/mailman/listinfo/ Please send bug reports about GHC to glasgow-haskell-bugs(a)haskell.org; GHC users hang out on glasgow-haskell-users(a)haskell.org. Bleeding edge CVS users party on cvs-ghc(a)haskell.org.

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RE: Haskell & .NET CLR
by Nigel Perry 26 May '01

26 May '01

At 12:53 am -0700 23/5/01 you wrote: >| Are any of the various Haskell implm., e.g. ghc, being >| targeted for the .NET CLR? You can get a beta version of ghc for .NET from www.mondrian-script.org. A lot, but far from all, or the standard libraries are provided. There is no floating point support (use the Mondrian compiler ;-)). This version of ghc will be superceded by another from a different source... Cheers, Nigel -- Nigel Perry, New Zealand

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(no subject)
by Rab Lee 26 May '01

26 May '01

hi, i'm having a bit more touble, can anyone help me or give me any hints on how to do this : "x 2 3 4" = ("x", [2, 3, 4]) __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/

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(no subject)
by Rab Lee 26 May '01

26 May '01

hi, i'm having a bit more touble, can anyone help me or give me any hints on how to do this : "x 2 3 4" = ("x", [2, 3, 4]) __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/

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can anyone help?
by Rab Lee 26 May '01

26 May '01

Dear Experts, I would appreciate any help that anyone can give me. I'm having a bit of trouble with Haskell, my question is pretty simple and i was wonder if anyone could please tell me how to change a string into a list??? Thank you in advance Leat __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/

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