Hello everyone,Quick question: is it safe to rely on the fact that positional parameters are available to definition of optional parameters default value ?
In other word, is the following procedure OK or does it rely on implementation detail that may change ?
(define (f a b #!optional (err (lambda () (error "a is not b" (cons a b)))))
(if (eq? a b) #t (err))) Thank you !PS: It's a dumb example but I have a real use case where it would be nice to use that trick.
