On Thu, Oct 2, 2014 at 12:40 PM, S. H. Aegis
main() =
You have declared (well, described, but by type inference that's the same thing) main to take a parameter of type "unit" (empty tuple). main doesn't take parameters. Haskell parameters do not work the way most common languages do; using parentheses in function calls the way you would in C/Java/Python etc. will generally get you unexpected type errors, because you're telling it you're passing tuples around. So, the function call f() (f :: () -> a) is different from f (f :: a) and the function call f(a, b) (f :: (a,b) -> c) is different from f a b (f :: a -> b -> c) (The inferred type of `f` is shown after each call.) -- brandon s allbery kf8nh sine nomine associates allbery.b@gmail.com ballbery@sinenomine.net unix, openafs, kerberos, infrastructure, xmonad http://sinenomine.net