Another useful option may be to just create a module with your own versions of the various prim functions. So, create something like this:
module Prims where primMaxInt :: Int primMaxInt = maxBound primMinInt :: Int primMinInt = minBound primCharToInt :: Char -> Int primCharToInt c = fromEnum c primIntToChar :: Int -> Char primIntToChar n = toEnum etc... Then, just use this in whatever code you are writing: module MyFile where import Prims canAddOne :: Int -> Bool canAddOne n = if n < primMaxInt then True else False This way you should be able to use the code examples from the book fairly directly. Mark Ross Paterson wrote: > On Sat, Dec 09, 2006 at 07:20:41PM +0000, [EMAIL PROTECTED] wrote: > >> I have now determined to my satisfaction that Hugs98-plus-Sept2006 has >> initialization problems concerning Prelude.hs and the use of the -P option. >> These problems may be peculiar to the port of Hugs to OpenBSD. In any event >> I have started poking around with gdb to try to figure out what's going on. >> (I actually can induce hugs to recognize the various prim functions that >> I initially had trouble with, but it's clear that Prelude processing does >> not work exactly as documented.) >> > > I guess that you're trying to add /usr/lib/hugs/packages/hugsbase/Hugs > to the search path. This isn't supposed to work, because that directory > isn't the root of a module hierarchy: each file X.hs in there contains > a module Hugs.X, not X. It's the parent of that directory that is a > module hierarchy, and it's already in the search path. > > If you're determined to use these prim* functions (though you shouldn't > because they're internal, and there are Haskell 98 equivalents of each > of them), you can approximate the pre-2002 Hugs Prelude with > > Hugs> :m Hugs.Prelude > Hugs.Prelude> primMaxInt > 2147483647 > > There are no guarantees that it will work in the future, though. > > _______________________________________________ > Hugs-Users mailing list > Hugs-Users@haskell.org > http://www.haskell.org/mailman/listinfo/hugs-users > _______________________________________________ Hugs-Users mailing list Hugs-Users@haskell.org http://www.haskell.org/mailman/listinfo/hugs-users
