Multiple applications of a function

[Marcin 'Qrczak' Kowalczyk]

Sun, 16 Sep 2001 10:52:07 -0400 (EDT), Mark Carroll <mark@chaos.x-philes.com> pisze:

> To multiply apply a function, I'm currently using:
> 
> 	multiplyApply f n a = (iterate f a) !! n
> 
> ...is there a Prelude function I've missed that already does this?

Unfortunately not.

> Could I be doing this better?

I think an explicit recursion would make it easier to compile
efficiently, and it can give a better error message for n < 0.

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 __("<  Marcin Kowalczyk * qrczak@knm.org.pl http://qrczak.ids.net.pl/
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