Re: [Scheme-reports] 1.3.5 Naming conventions

[John Boyle <johnthescavenger@x>]

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 <wingo@x> 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
Scheme-reports@x
http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports

_______________________________________________
Scheme-reports mailing list
Scheme-reports@x
http://lists.scheme-reports.org/cgi-bin/mailman/listinfo/scheme-reports