[Haskell] Re: xemacs & haskell major mode

2005-02-05 Thread Surendra Singhi
Surendra Singhi wrote: I downloaded the haskell mode from that site and I was trying to configure it, but during the process I ran into this error Debugger entered--Lisp error: (void-function charsetp) I got over this error by commenting out the code dealing with japanese font and calling charsetp

[Haskell] Re: xemacs & haskell major mode

2005-02-05 Thread Surendra Singhi
Surendra Singhi wrote: But now I have run into another trouble this time it is Debugger entered--Lisp error: (void-function switch-to-haskell) Do I need to set some inferior haskell buffer variable? Or why am I getting this error? I have Hugs98 installed as well as configured on my path. The soluti

[Haskell] [newbye] 'Just a'

2005-02-05 Thread Yuri D'Elia
Hi all. I'm experimenting with haskell and its type system. I've done a function which scans a list, and returns "Just a" value if the element is found, or Nothing. get :: a -> Maybe a and implemented getAorB :: Maybe a -> Maybe a -> a getAorB a b = ... a function which returns "Just (get a)" o

Re: [Haskell] [newbye] 'Just a'

2005-02-05 Thread Arjun Guha
The problem with your approach is that getAorB does not halt if the list does not contain the first element. For example: > getAorB 6 5 [5,5..] While you may not care about a contrived example like this, it does imply that your function scans the list once, searching for the first element, and