5 May
2008
5 May
'08
midnight
allbery:
On 2008 May 4, at 23:40, Ross Boylan wrote:
ERROR "grammar.hsl":21 - Type error in explicitly typed binding *** Term : envEnd *** Type : String -> GenParser Char a [Char] *** Does not match : String -> Parser ()
Hugs is prone to error messages that obscure the problem. The trick here is to realize that the type "Parser ()" is the same as "GenParser Char a ()"; this then tells you that you have used a function that returns a [Char] (aka String) where a type () (Haskell's version of (void)) is expected.
Yeah, if you're on Debian it would make sense to install GHC -- its much more active, much faster, and supports more things. It's well maintained on Debian too. -- Don