Am Freitag, 8. Juli 2005 18:43 schrieb Andrew Pimlott: > [...] > It is one thing to embrace lazy evaluation order, and another to embrace > lazy IO (implemented using unsafeInterleaveIO). As a relative newcomer > to Haskell, I got the impression that the "interact" style was always a > hack, discarded for good reason in favor of the IO monad. Is there a > strong case for interact?
unsafeInterleaveIO is useful roughly because of the same resons, lazy evaluation is useful. For example, you don't need to overspecify the relative order in which certain I/O primitives occur. The problem with it is, of course, that it's unsafe. As part of my diploma thesis, I'm working on a small collection of modules which provides safe I/O interleaving. The key point is to split the state of the world since I/O on different parts of the world can be interleaved arbitrarily. If someone is interested, I can post more details. > Andrew Best wishes, Wolfgang _______________________________________________ Haskell mailing list Haskell@haskell.org http://www.haskell.org/mailman/listinfo/haskell
