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Bradd wrote: >> That's a big pitfall! A right-fold on an infinite sequence will >> diverge before the folding function ever gets called. I think it's a >> bad idea to provide an interface that is "broken by design" like that >> -- it cannot possibly function correctly. scgmille@xxxxxxxxxxxxxxxxxx wrote: > Its not really. collection-fold-right will raise an error if applied > to an infinite collection. Would it placate you if it was required to > raise an error with truely infinite collections? That's better, but I still have a problem with the fact that you're requiring something that is not well-defined. And by "not well-defined," I don't mean that it's ambiguous or unclear -- I mean that there's no way to define it meaningfully. -- Bradd W. Szonye http://www.szonye.com/bradd