Re: A way to get a list of available functions / variables?

[Taylor Venable <taylor@metasyntax.net>]

Johannes Weiner <hannes@saeurebad.de> writes:

>> Is there a way to programmatically get the list of available functions?
>> I'm thinking there must be a table somewhere which relates symbol names
>> to actual function definitions, but can you get all the names in the
>> table from Lisp code?  If so, my second question would then be if I
>> could do the same for variables.
>
> mapatoms might help:
>
> (let (cmds vars)
>   (mapatoms (lambda (atom)
> 	      (cond
> 	       ((commandp atom)
> 		(setq cmds (cons atom cmds)))
> 	       ((custom-variable-p atom)
> 		(setq vars (cons atom vars)))))))

That is very cool, thanks much!

>> The reason I ask is I've got this thing going on at my college where
>> I'll write up an Emacs "function of the day" on the whiteboard in the
>> computer science lounge.  It'd be cool if I could automate this process
>> to automatically choose a random function or variable and build like an
>> RSS feed of the results or something.  Because I don't know how many
>> times I've been just randomly browsing around the documentation or
>> source and found something like c-subword-mode that I otherwise would
>> not have known even existed!
>
> Sounds like a good idea.

Thanks; I'll post to emacs-help when I get it finished and working suitably.

-- 
Taylor Venable            http://real.metasyntax.net:2357/

foldr = lambda f, i, l: (len(l) == 1 and [f(l[0], i)] or
                         [f(l[0], foldr(f, i, l[1:]))])[0]