On Thu, Jan 18, 2007 at 10:26:25AM +0100, phiroc@free.fr wrote:
To: haskell-cafe@haskell.org From: phiroc@free.fr Date: Thu, 18 Jan 2007 10:26:25 +0100 Subject: [Haskell-cafe] Partial application
Hello,
could someone please give me an example of the "partial application" of the following curried function:
add' :: Int -> Int -> Int add' a b = a + b
Normally, add' 1 should work, but it doesn't.
it does work for me: | *Main> add' 1 | | Top level: | No instance for (Show (Int -> Int)) | arising from use of `print' at Top level | Probable fix: add an instance declaration for (Show (Int -> Int)) | In a 'do' expression: print it perhaps you didn't understand the error message? it is not about the outcome itself, it just states that the output cannot be displayed. (Int -> Int) is a type that doesn't "show". hth, m