Re: [Haskell-cafe] Lazy Lists and IO

12 Jul 2007

      Jonathan Cast wrote:
...
On Thursday 12 July 2007, Andrew Coppin wrote:
...
Wow.
Show me a simple problem, and some Haskeller somewhere will find a
completely unexpected way to solve it... LOL!
OTOH, doesn't that just mean that Nat is itself a degenerate list, and
genericList is just converting one list to another, and the Ord instance
for Nat is doing the short-cut stuff?
Yes.  Nat ~ [()], where ~ means `is isomorphic to'.  But Nat is also the 
obvious way to encode Peano arithmetic in Haskell, so this is a deep thought, 
not a shallow one.
That thought was not lost on me. ;-)

I was just thinking that in mundane machine terms, we're not doing 
anything especially remarkable here...