[Haskell] dependent types, type class contexts

2004-04-06 Thread Martin Sulzmann
> ... > This gets at the crux of my questions: > > - Why can't the compiler tell that (ListT a, Num b) is enough to figure > out the additional context it seems to need? > Most likely, GHC won't "apply" > instance (ListT a, Eq b) => Eq (a b) cause of the overlap. > - Would it be

RE: [Haskell] deriving with newtypes

2004-04-06 Thread Brandon Michael Moore
On Fri, 2 Apr 2004, Simon Peyton-Jones wrote: > Your word is my command. 'Tis done. > > Simon > > | -Original Message- > | From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > On Behalf Of Wolfgang > | Jeltsch > | Sent: 21 March 2004 17:55 > | To: The Haskell Mailing List > | Subject: [Ha

[Haskell] dependent types, type class contexts

2004-04-06 Thread John D. Barnett
Hello- I'm interested in simulating dependent types in haskell, with the aim of operating on (as Oleg put it) "stanamically" sized lists: types reflect size constraints, but ultimately need to be resolved from dynamic input. I have a good handle on how to do this (read on), but I keep running

[Haskell] Foclasa: Last Call for Papers

2004-04-06 Thread Jean-Marie JACQUET
[ Our apologies for multiple copies. ] == 3nd International Workshop on Foundations of Coordination Languages and Software Architectures

[Haskell] ANNOUNCE: Haskell XML Toolbox Version 4.00

2004-04-06 Thread Uwe Schmidt
Haskell XML Toolbox 4.00 I would like to announce a new version of the Haskell XML Toolbox for processing XML including a validating parser and a new XPath module. new features: * compiles with ghc version 6.2 * new module structure for input modules to ease porting to other OS/compilers