Does "effect-free" preclude raising an exception? (Wikipedia says so, although I imagine others could legitimately disagree.) Because (positive? 'a) generally does that. I suspect the point is not worth pressing. --John Boyle *Science is what we understand well enough to explain to a computer. Art is everything else we do.* --Knuth
On Sat, Jan 5, 2013 at 11:15 AM, Andy Wingo <[email protected]> wrote: > It's said that a predicate is a procedure that returns #t or #f. > Perhaps it would be better as "an effect-free procedure that returns #t > or #f". The report does not contain any effectful predicates, but it > does set up a vocabulary for schemers to use, and predicates should not > have visible effects. As you like, though. > > Andy > -- > http://wingolog.org/ > > _______________________________________________ > Scheme-reports mailing list > [email protected] > http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports >
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