| From: Michael Sperber (sperber at deinprogramm.de) Date: Tue May 25 14:28:51 EDT 2010 |
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"Jos Koot" <jos.koot at telefonica.net> writes: > In Scheme a predicate either returns #f or #t. For me it would be acceptable > to have a third truth value #?. Our paper makes that point. But what does (if #? 1 2) return? - Cheers =8-} Mike Friede, Völkerverständigung und überhaupt blabla
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