Re: [Haskell-beginners] foldr for Nats

yeahh, I know that it is similar, but don't know how to start implementing it. -------- Original-Nachricht --------

Datum: Tue, 26 Jan 2010 11:05:20 +0000 Von: Stephen Tetley An: CC: Beginners@haskell.org Betreff: Re: [Haskell-beginners] foldr for Nats

Hi

One hint is that your data type for natural numbers is remarkably like the data type for lists...

data List a = [] | a : List a

The difference is that List has an element of type 'a' at the non-zero cases.

Best wishes

Stephen _______________________________________________ Beginners mailing list Beginners@haskell.org http://www.haskell.org/mailman/listinfo/beginners

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