On 12/22/07, David Benbennick <[EMAIL PROTECTED]> wrote: > On 12/21/07, Stefan O'Rear <[EMAIL PROTECTED]> wrote: > > Because they simply aren't the same. > > Good point; thanks. That means that Don's patch could theoretically > break some existing Haskell program:
In fact, it's possible to get strictness to avoid stack overflow, and still have laziness to allow undefined: myEnumFrom :: Integer -> [Integer] myEnumFrom a = map (a+) $ enumDeltaIntegerStrict 0 1 where enumDeltaIntegerStrict x d = x `seq` x : enumDeltaIntegerStrict (x+d) d then *Main> (myEnumFrom 42) !! (10^6) 1000042 *Main> length $ take 10 $ myEnumFrom undefined 10 _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
