let and flet in emacs lisp

Question

I don\'t know if you would call it the canonical formulation, but to bind a local function I am advised by the GNU manual to use \'flet\':

(defun adder-with-flet         


        

Answer 1

@d11wq there is `funcall' for this purpose. The following works:

(defun adder-with-let (x)
  (let ((f #'(lambda (x) (+ x 3))))
    (funcall f 3)))

(adder-with-let 3) ;=> 6