Assets helper for load css and js file at single view

You've placed your functions inside a conditional which checks for the existence of a function which you do not define (assets). Meanwhile, you have not checked whether the two functions you define already exist.

I would also recommend adding a second, optional parameter to css() to pass the media attribute. Additionally, it would probably be a good idea to use the self-closing form of the link element, in case someone wants to use the function for a page/site with an XHTML doctype.

Bonfire

Practical CodeIgniter 3
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