Call function in another lisp file

Question

I have to write a game in Lisp. In order to make it clear, I wanted to split the code in different .lisp files.

How can I call a function out of a function in the ot

Answer 1

This is for Emacs Lisp (aka elisp)

Create a file at this location: ~/.emacs.d/init.el

Create a file at this location: ~/.emacs.d/file1.el

Create a file at this location: ~/.emacs.d/file2.el

Now, open up ~/.emacs.d/init.el and write (and then save):

(load "~/.emacs.d/file1.el")

(load "~/.emacs.d/file2.el")

(defun run-both-functions ()
  (interactive)
    (switch-to-buffer "*Messages*")
    (first-function)
    (sit-for 2)
    (second-function))

Now, open up ~/.emacs.d/file1.el and write (and then save):

(defun first-function ()
    (message "My name is Fred."))

Now, open up ~/.emacs.d/file2.el and write (and then save):

(defun second-function ()
    (message "My name is George."))

Now, restart Emacs and type: M-x run-both-functions RET

Any functions that you put into any of the three (3) files mentioned above will be accessible to other functions. You will note that run-both-functions includes an (interactive) statement, which means that the user can call the function with M-x or a keyboard shortcut.