3 ms·
type Function = (->) type On f g a b = f (g a) (g b) {-# LANGUAGE TypeOperators #-} (Function `On` List) a b <_<
by evincarofautumn 11y ago
type Function = (->)
type On f g a b = f (g a) (g b)
{-# LANGUAGE TypeOperators #-}
(Function `On` List) a b
<_<