GHC 5.0 doesn't tell me which line the error is on in the attached program.
$ rm -f T.o && ghc -c -fglasgow-exts T.hs
Couldn't match `Int' against `[(String, Int)]'
Expected type: Int
Inferred type: [(String, Int)]
The type error itself is correct: the type of ?env in the signature
for ident should be Env not Int.
--
Alastair Reid [EMAIL PROTECTED] http://www.cs.utah.edu/~reid/
module T where
import Maybe
type Env = [(String,Int)]
ident :: (?env :: Int) => String -> Int
ident x = fromJust (lookup x ?env)
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