[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Non-upward-compatibility of Chez Scheme versions

	   (let ([null? null?])
	     (define-macro! nil? (x)
	       `(,null? ,x))		; note comma before null?

I don't use the Scheme's you use, but I think I can see at least one
problem with this macro: functions are *not* defined in Scheme to be 
self-evaluating like, for example, integers are.
So instead of: 
you need:
As in:
	(let ((null? null?))
	  (define-macro! nil? (x)
	    `(',null ,x)))