How to check if a function (e.g. server-running-p) is available under Emacs?

Question

I\'m trying to check if server-running-p is available in my .emacs file before calling it. I already have the following:

(if (not (server-runnin         


        

Answer 1

A simpler way is to use "require" to make sure the server code is loaded. Here's what I use:

(require 'server)
(unless (server-running-p)
    (server-start))

Answer 2

ryuslash’s suggestion was really helpful, but I modified it for my .emacs:

(unless (and (fboundp 'server-running-p)
             (server-running-p))
  (server-start))

This gets the server running even if server.el hasn't been loaded—server-running-p is only defined when server.el is loaded, and server-start is autoloaded.

Answer 3

boundp checks to see if a variable is bound. Since server-running-p is a function you'll want to use fboundp. Like so:

(if (and (fboundp 'server-running-p) 
         (not (server-running-p)))
   (server-start))