maxinumBy::(Foldable t, Ord a) => t a -> a maxinumBy = foldr1 max

Hi,

I want to re-write a function maximumBy (its an assignment).

However, I don't get how it works.

...

maximumBy compare [1,53,9001, 10] 9001

but what does it actually do to get there? 

thanks in advance.

best,