On 3/18/20 2:55 AM, Massimiliano Gubinelli wrote:
I understand the point but then it comes to the problem how to handle this in macros. For example if bar is a proceduce which returns multiple values and I have a macro "my-macro" which wraps the call with some initialization and finalization code and I write (my-macro (bar)) how to write this macro without knowing if bar is returning multiple values or not? For example I would like the code above to expand into (begin (initialization-code) (let ((ret (bar))) (finalization-code) ret)) But this does not work as shown by the example above. How to implement this macro correctly?
How about calling (my-macro/values bar) where my-macro/values expands to (call-with-values (lambda () (bar)) (lambda args (finalization-code) (apply values args)) Matt
