How to reimplement the "all" function in Haskell? -

i need define functionall' :: ( -> bool ) -> [a] -> bool verifies if elements list satisfy condition .

for example : all' ( <5) [1,2,3] = true , all' (>=2) [1,1,2,2,3,3] = false.

my main problem don't know how handle transmission of function.

functions in haskell passed other value. here's example progress:

dobothsatisfy :: (a -> bool) -> -> -> bool dobothsatisfy p x y = (p x) && (p y)

and usage:

dobothsatisfy (> 5) 6 7 == true dobothsatisfy (> 5) 1 8 == false

now try extend lists.

Addrety