When do you use “apply” and when “funcall”?

Question

The Common Lisp HyperSpec says in the funcall entry that

(funcall function arg1 arg2 ...) 
==  (apply function arg1 arg2 ... nil) 
==  (app         


        

Answer 1

You should use funcall if you have one or more separate arguments and apply if you have your arguments in a list

(defun passargs (&rest args) (apply #'myfun args))

or

(defun passargs (a b) (funcall #'myfun a b))