codeigniter error pages

How to ac开发者_如何学Pythoncess helpers/libraries in error pages of codeigniter ? For example error_general ?

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Use this function:

$CI &= get_instance();
$CI->load->library('foo');

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Thanks. This worked for me. However, the statement should actually say this,

$CI = & get_instance();
$CI->load->library('foo');