99 questions/Solutions/4

Revision as of 01:17, 15 September 2010 by Axiomatic (Talk | contribs)

(*) Find the number of elements of a list.

myLength           :: [a] -> Int
myLength []        =  0
myLength (_:xs)    =  1 + myLength xs

myLength :: [a] -> Int
myLength =  foldr (\x n -> n + 1) 0

This is

length

Prelude