On 5/3/05, Michael Vanier <[EMAIL PROTECTED]> wrote: > Lazy evaluation does make some kinds of idioms possible that are much > harder to do with strict evaluation. For instance, here is an infinite > list of ones:
You get something a lot like backtracking automatically by just having your parser or whatever return a list of all possible results. It subsumes "generators" or "iterators" found in other languages in a much nicer way. Laziness can make many idioms much more efficient (sometimes so much so that they go from impossible to possible). It's not a free lunch though... _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
