9 Dec
2005
9 Dec
'05
11:45 a.m.
On Friday 09 December 2005 17:31, Christian Maeder wrote:
raptor wrote:
And second why when I try do do function composition i.e. :
newf = map . f
But this works :
newf x = map (f x)
Does f has constraints? It should work with a type signature.
To elaborate this very short comment: The above definition for newf is rejected because of the (infamous) monomorphism restriction. Either supply a type signature or an argument so that Haskell knows you want to define a function, not data. Ben