Hi Dave,
| Note that I'd recommend getting some clarification about this from either
| the current hugs team or Mark Jones (who are probably reading this list),
| as I can vaguely recall a couple of times over the last few years where
| Mark Jone has said `Hugs should not be used for serious
Ketil Z Malde adds a comment concerning the query of Zhe Fu:
Is there any built-in functions in Haskell to implement
diffential operation and partial diffential operation?
Or can anyone give me some advices about how to implement them
with Haskell? Thanks.
Jerzy Karczmarczuk has some
Title: RE: Help using a state monad
your pattern match
of (s:sx) seems to be the cause of the delay
try
--Process the input
mProcess :: String - State String
mProcess sx = do b - isOn
if ( head sx == 't' )
then toggle
else return ()
appOut (tuUpper b (head sx)) (mProcess (tail sx))
hi,
I just started to write a few lines using hugs98. I ran into a program
error that reads like this:
Program error: {instDirectPositions_v1683_v1697 dir_pt}
Could anybody give me a direction on how to read this error message and
the possible cause of this error? Thank you very much.
Chen-Chieh Feng wrote:
Program error: {instDirectPositions_v1683_v1697 dir_pt}
Could anybody give me a direction on how to read this error message and
the possible cause of this error? Thank you very much.
Check wheter all pattern matches are complete, i.e. all constructors
are matched.
