; like cout << arguments << args ; where argument can be any Scheme object. If it's a procedure ; (without args) it's executed rather than printed (like newline) (define (cout . args) (for-each (lambda (x) (if (procedure? x) (x) (display x))) args)) (define (cerr . args) (for-each (lambda (x) (if (procedure? x) (x (current-error-port)) (display x (current-error-port)))) args)) ;(##define-macro (nl) '(newline)) (define nl (string #\newline))