thanks!
suppose we have
data Tree a = Leaf a | Branch (Tree a) (Tree a) deriving Show
and how I could define a function foo :: a - Tree a that
foo a = Leaf a where a is not a type of Tree
foo b = b where b is one of the type of Tree (Leaf or Branch) ?
The following
Hello Max.cs,
Thursday, January 1, 2009, 11:36:24 AM, you wrote:
seems that you come from dynamic languages :)
Haskell has static typing meaning that your function can accept either
Tree or a as arguments. so you should convert a to Tree explicitly,
using Leaf
thanks!
