iterate f x == [x, f x, f (f x), ...]Note that iterate is lazy, potentially leading to thunk build-up if the consumer doesn't force each iterate. See iterate' for a strict variant of this function.
>>> take 10 $ iterate not True [True,False,True,False... >>> take 10 $ iterate (+3) 42 [42,45,48,51,54,57,60,63...