emacs/elisp: What is the hash (pound, number sign, octothorp) symbol used for?

Posted by Cheeso on Stack Overflow See other posts from Stack Overflow or by Cheeso
Published on 2010-04-23T20:14:02Z Indexed on 2010/04/23 20:23 UTC
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emacs

|

elisp

What does this do?

(add-hook 'compilation-mode-hook #'my-setup-compile-mode)

...and is it different than

(add-hook 'compilation-mode-hook 'my-setup-compile-mode)

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