How to call library function from one library to another library

[eluser]nmweb[/eluser]
http://ellislab.com/codeigniter/user-gui...aries.html Under 'Utilizing CodeIgniter Resources within Your Library'

This can be applied to user libraries as well.

In the photo library

Code:

$CI =& get_instance();

$CI->load->library('gallery');
$CI->gallery->do_something();