On 10/17/07, John Meacham <[EMAIL PROTECTED]> wrote: > if anyone is interested, Although I bet this has been implemented a > hundred times over, I have attached my lazy naturals module below just > for larks. It is quite efficient as such things go and very lazy. for > instance (genericLength xs > 5) will only evaluate up to the 5th element > of the list before returning a result. and ((1 `div` 0) > 17) is true, > not bottom.
> If anyone wants me to clean this up and package it as a real module, I > would be happy to do so. It looks like there's already a lazy-natural type in the "numbers" package on Hackage, but not having used it I have no idea what it's like. http://hackage.haskell.org/cgi-bin/hackage-scripts/package/numbers-2007.9.25 http://tinyurl.com/2pmthz Stuart _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
