Library function to compose a function with itself n times

Question

Is there a library function available in Haskell to compose a function with itself n times?

For example I have this function:

func :: a -> a 

and I want to do this:

func . func . func . func . func . func , ...  

(up to n times, where n is only known at runtime).

Note that the iterate function would not be appropriate for what I am doing, since I do not care about any intermediate results.

Answer 1

The iterate solution is fine, or you might like this one: the composition of n copies of f is foldr (.) id (replicate n f).

Answer 2

\xs n -> iterate func xs !! n 

(xs is the initial value, n is the number of times to apply func)

I don't know why, but I feel like iterate is something people aren't consistently exposed to when learning Haskell.

If you don't like !! then you could use zip and lookup as an alternative. (some people/groups/tools don't like functions that call "error" in certain cases, I'm not claiming lookup is any better in these cases)

lookup n . zip [0..] . iterate func 

EDIT: Ok, so I deleted then undeleted because I agree with the other answerer - you shouldn't discount use of iterate just because it gives you more than you need.