Re: Function pointer

[Harald Hanche-Olsen <hanche@math.ntnu.no>]

+ Decebal <CLDWesterhof@gmail.com>:

> Is it possible to work with function pointers?

No. Pointers are a low level concept not supported by elisp.

> The following works:
>     (a-function)
> but this does not work:
>     (setq function 'a-function)
>     (function)
> this gives wrong number of arguments.

Ah. So you're not after pointers, just a means of passing functions
around. You should be aware, then, that symbols can have two values
associated with them: The regular value, which is obtained by just using
the symbol, and the function value, which is consulted if the symbol is
in the function place of a for. You have assigned the symbol a-function
to the symbol function above, but that symbol also has a function value,
which you inadvertently used in the last line.

The elisp manual explains this. Go to node Symbols, then sub-node Symbol
Components.

The very short answer to your question: Use funcall, as in
    (funcall function)

-- 
* Harald Hanche-Olsen     <URL:http://www.math.ntnu.no/~hanche/>
- It is undesirable to believe a proposition
  when there is no ground whatsoever for supposing it is true.
  -- Bertrand Russell