[Haskell-cafe] Partially applied functions

[Casey Hawthorne]

You can pattern match on the right hand side of '|' in a list
comprehension, since a list comprehension is just the list monad.


add :: Int -> Int -> Int
add x y = x + y

-- a list of partially applied functions
adds = [add 3, add 5, add 7, add 3, add 5, add 8]

-- an example usage of the list
kP num = map (\ f -> f 10 ) (addPs num)

-- add3s = filter (?) adds -- add3s = [add 3, add 3]
-- addEvens = filter (?) adds --addEvens = [add 8]

addPs num = [ x | x <- adds, x 0 == num ]

--
Regards,
Casey