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file_exists and DRY principle

#1
Hi,

i was reading the documentation here https://www.codeigniter.com/user_guide/t...pages.html
to the section "Adding logic to the controller". I think repeating ! file_exists(APPPATH.'views/pages/'.$page.'.php')) in each view does violate the DRY principle ? Confused
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#2
The function view($page = 'home') is a single method used to display any number of pages. Violating DRY would be to have a separate method for each possible "page" that repeats the same lines of code in each one.
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