Question

I need to implement a split function in haskell where user gives the as a example input

splitx [1,2,3,4,5,6] 3 

should output -> [1,2,3]

splitx::[Int]->Int->[Int]
splitx [] 0 = []
splitx (x:xs) n = x: splitx xs (n-1)

i wrote the following function but it gives a error

Non-exhaustive patterns in function Main.splitx

just tell me where am i wrong ?

Answer 1

If you want to return the first n elements:

you have no pattern match for input where n=0 and list is not empty:

splitx _ 0 = []

Note: specify the type to be generic so it works not only with Ints:

splitx :: [a] -> Int -> [a]