On Sat, Aug 24, 2013 at 11:28 AM, Jörg F. Wittenberger <joerg.wittenber...@softeyes.net> wrote: > On Aug 22 2013, Michele La Monaca wrote: > >> How can I check if a symbol is bound to a value? > > > Oleg Kiselyov's receipe might be helpful here: > http://okmij.org/ftp/Scheme/macro-symbol-p.txt
Intriguing reading material, thanks. But isn't my proposed approach a much simpler solution? (define-syntax symbol?? (syntax-rules () ((_ x) (if (symbol? 'x) #t #f)))) It passes all Kiselyov's tests. Michele _______________________________________________ Chicken-users mailing list Chicken-users@nongnu.org https://lists.nongnu.org/mailman/listinfo/chicken-users