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HaXml Help
by D.J.Steinitz 22 Jun '02

22 Jun '02

I wonder if anyone has had this problem before and has already made the modifications which I need? The good news is that I have managed to get DtdToHaskell to take the SVG DTD and produce a large Haskell file. cat SVG10.hs | wc 30271 154470 1615569 The bad news is that it doesn't compile - see below. Do I have to add definitions for OneOf5, OneOf6, OneOf14, OneOf18, OneOf20 by hand? I've found OneOf2, OneOf3, OneOf4 in XmlToHaskell.hs. I assume I need to make the new OneOfs instances of XmlContent? Dominic. ghc -package lang -I../HaXml-1.05/lib/ -i../HaXml-1.05/lib/ -c -o SVG10.o SVG10.hs SVG10.hs:1188: Type constructor or class not in scope: `OneOf6' SVG10.hs:1188: Type constructor or class not in scope: `OneOf5' SVG10.hs:1451: Type constructor or class not in scope: `OneOf6' SVG10.hs:1451: Type constructor or class not in scope: `OneOf5' SVG10.hs:1584: Type constructor or class not in scope: `OneOf6' SVG10.hs:1584: Type constructor or class not in scope: `OneOf20' SVG10.hs:1852: Type constructor or class not in scope: `OneOf6' SVG10.hs:1852: Type constructor or class not in scope: `OneOf5' SVG10.hs:1986: Type constructor or class not in scope: `OneOf6' SVG10.hs:1986: Type constructor or class not in scope: `OneOf5' SVG10.hs:2121: Type constructor or class not in scope: `OneOf6' SVG10.hs:2121: Type constructor or class not in scope: `OneOf5' SVG10.hs:2257: Type constructor or class not in scope: `OneOf6' SVG10.hs:2257: Type constructor or class not in scope: `OneOf5' SVG10.hs:2397: Type constructor or class not in scope: `OneOf6' SVG10.hs:2397: Type constructor or class not in scope: `OneOf5' SVG10.hs:2533: Type constructor or class not in scope: `OneOf6' SVG10.hs:2533: Type constructor or class not in scope: `OneOf5' SVG10.hs:2673: Type constructor or class not in scope: `OneOf6' SVG10.hs:2673: Type constructor or class not in scope: `OneOf5' SVG10.hs:4433: Type constructor or class not in scope: `OneOf6' SVG10.hs:4467: Type constructor or class not in scope: `OneOf6' SVG10.hs:4531: Type constructor or class not in scope: `OneOf6' SVG10.hs:4943: Type constructor or class not in scope: `OneOf6' SVG10.hs:4943: Type constructor or class not in scope: `OneOf14' SVG10.hs:5464: Type constructor or class not in scope: `OneOf6' SVG10.hs:5464: Type constructor or class not in scope: `OneOf18' SVG10.hs:6645: Type constructor or class not in scope: `OneOf6' SVG10.hs:6966: Type constructor or class not in scope: `OneOf6' SVG10.hs:7010: Type constructor or class not in scope: `OneOf6' SVG10.hs:7079: Type constructor or class not in scope: `OneOf6' SVG10.hs:7127: Type constructor or class not in scope: `OneOf6' SVG10.hs:7200: Type constructor or class not in scope: `OneOf6' SVG10.hs:7225: Type constructor or class not in scope: `OneOf6' SVG10.hs:7295: Type constructor or class not in scope: `OneOf6' SVG10.hs:7372: Type constructor or class not in scope: `OneOf6' SVG10.hs:8223: Type constructor or class not in scope: `OneOf6'

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ANNOUNCE: Haddock version 0.3
by Simon Marlow 22 Jun '02

22 Jun '02

I'm pleased to announce version 0.3 of Haddock, a documentation generation tool for Haskell source code. It's available from http://www.haskell.org/haddock/ The changes relative to version 0.2 are listed here: http://www.haskell.org/haddock/CHANGES.txt Cheers, Simon

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by �� 21 Jun '02

21 Jun '02

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RE: Library report, monad zero laws
by Simon Peyton-Jones 21 Jun '02

21 Jun '02

Well, * My reluctance to change the draft H98 report is rising sharply. * I don't think the H98 report has ever had laws about mzero etc. * And the whole laws business is flaky because people can and do make instances of Monad that don't obey the laws. * Lastly, where does one stop? Still, I have no concrete objection to adding the four "laws" below to the Monad library spec, with the same vague status as the other laws mentioned in the report. Comments, anyone? Even if the consensus is to add these four lines, I'm not going to reset the clock. I'm going to freeze in early July if nothing substantial arises before then. Simon | -----Original Message----- | From: Jon Fairbairn [mailto:Jon.Fairbairn@cl.cam.ac.uk] | Sent: 20 June 2002 16:27 | To: Simon Peyton-Jones | Subject: Library report, monad zero laws | | | The old report used to include | | m >> zero = zero | zero >>= m = zero | m ++ zero = m | zero ++ m = m | | after the other monad laws. Now mzero and mplus are in the | library, shouldn't there be some mention of these laws there? | I'd be particularly keen to see a remark about | | _|_ >> zero | | inevitably being _|_ | | Cheers, | | Jón | | | | -- | Jón Fairbairn | Jon.Fairbairn(a)cl.cam.ac.uk | 31 Chalmers Road | jf(a)cl.cam.ac.uk | Cambridge CB1 3SZ +44 1223 570179 (after 14:00 | only, please!) | | |

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ANNOUNCE: Chameleon version 02-06
by Martin SULZMANN 21 Jun '02

21 Jun '02

Chameleon is a Haskell-style language which provides a flexible overloading mechanism based on Constraint Handling Rules (CHRs). The user can impose conditions on overloaded identifiers via CHRs. For example, consider the functional dependency class Collects ce e | ce -> e where ... In Chameleon, we would provide instead the following CHR: rule Collects ce e, Collects ce e' ==> e=e' The latest version including a number of examples can be down-loaded from here: http://www.cs.mu.oz.au/~sulzmann/chameleon Currently, we have only implemented the front-end, i.e. the type checker. Also available are three papers - "Beyond Type Classes", describing the connection and differences compared to Haskell-style type classes. - "A Theory of Overloading", describing the theoretical machinery behind the Chameleon language. - "A Theory of Overloading Part II: Semantics and Coherence", describing an implementation scheme which we yet have to implement. The papers can be found under: http://www.cs.mu.oz.au/~sulzmann/chr Cheers, Martin

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ANNOUNCE: hat-2.00
by Malcolm Wallace 20 Jun '02

20 Jun '02

------------------------------------ hat-2.00 ------------------------------------ We are pleased to announce a new release of Hat, the Haskell tracing (an debugging) system for Haskell'98. This release of Hat is a major release. It is now distributed entirely separately from the nhc98 compiler, and supports both nhc98 and GHC as possible host compilers. Since the last release of Hat, the trace file format has changed, the browsing tools have been substantially rewritten for better cross-tool integration, and runtime performance has been improved. If you haven't already tried out the Hat tracing system, now is a good time to have a go! Features worth noting are: * There is a tutorial introduction to Hat, showing how to generate program traces, how to explore them, and how they can help you to debug Haskell programs. * All the interactive trace browsing tools are implemented in Haskell, including a simpler, textual version of hat-trail. They all inter-operate, and use a similar command syntax. * The trace-generating machinery can be used with either GHC or nhc98. Just use `hmake -ghc -hat' or `hmake -nhc98 -hat'. There is a new mailing list at haskell.org for discussion of the Hat system, and bug-reports. http://haskell.org/mailman/listinfo/hat For information on hat: http://www.cs.york.ac.uk/fp/hat/ For hat downloads: ftp://ftp.cs.york.ac.uk/pub/haskell/hat/ (Please note that a prior installation of hmake-3.05 is required.) Regards, The Hat team at York

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Re: ANNOUNCE: Happy version 1.13
by Sigbjorn Finne 20 Jun '02

20 Jun '02

Simon Marlow simonmar(a)microsoft.com writes: > > ANNOUNCING Happy 1.13 - The LALR(1) Parser > Generator for Haskell .... > Happy is available in source form, which can be compiled with > GHC version 4.xx or 5.xx (4.08+ recommended), and we also > provide binaries for some architectures. The Happy homepage > with links to the various distributions lives at: > > http://www.haskell.org/happy/ A Windows Installer for 1.13 is available via http://galois.com/~sof/happy-1-13.msi --sigbjorn

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ANNOUNCE: nhc98-1.14, hmake-3.05
by Malcolm Wallace 20 Jun '02

20 Jun '02

----------------------- nhc98-1.14 + hmake-3.05 ----------------------- We are pleased to announce new releases of nhc98 and hmake. These are essentially bug-fix and performance-improvement releases. hmake: * Bugfixes for the -hat option nhc98: * No longer includes Hat, the Haskell'98 tracing system. Hat will shortly be released as a separate package, capable of working with either nhc98 or ghc, or both. * Tracks the latest minor revisions of the Haskell'98 Report. * Runtime performance improved by 8% (thanks to Thomas Nordin). * Numerous other small tweaks and bugfixes. for information on nhc98: http://www.cs.york.ac.uk/fp/nhc98/ for information on hmake: http://www.cs.york.ac.uk/fp/hmake/ Regards, Malcolm Wallace

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I NEED YOUR ASSISTANCE
by DEMOLA RASAQ 20 Jun '02

20 Jun '02

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How can I use GHC Win32 ?
by kyagrd 20 Jun '02

20 Jun '02

There is no DOC on the GHC homepage ... It just says see the source ... But where is the source ? I downloaded ghc 5.02.3 source but there was no source of the win32 library ??? -- Ahn Ki-yung

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