Re: [Haskell-cafe] Function composition

Luke Palmer schrieb:

2008/12/26 Oscar Picasso mailto:oscarpicasso@gmail.com>

Hi,

I can write: *Main> let yes = not . not *Main> :t yes yes :: Bool -> Bool

But not: *Main> let isNotEqual = not . (==)

The definition of (.):

f . g = \x -> f (g x)

http://www.haskell.org/haskellwiki/Composing_functions_with_multiple_values