Memoization with recursion

Question

I am trying to understand Haskell realization of memoization , but I don\'t get how it works:

memoized_fib :: Int -> Integer
memoized_fib = (map fib [0..]         


        

Answer 1

map does not take three parameters here.

(map fib [0..] !!)

partially applies (slices) the function (!!) with map fib [0..], a list, as its first (left-hand) argument.