[Haskell-beginners] Re: Finite State Machine ..
apfelmus at quantentunnel.de
Sun Mar 1 05:31:45 EST 2009
Tom Poliquin wrote:
> 1) Is there a nice (canonical) way of eliminating
> nested evil in Haskell? I thought that perhaps making
> a tuple of all the if's conditions and patterm matching
> on them might make a bit more comprehensible.
> Likely there's a better way.
You probably want guards, like this
| n == 0 = 0
| n == 1 = 1
| otherwise = fib (n-1) + fib (n-2)
More information about the Beginners