http://www.perlmonks.org?node_id=118007


in reply to Re: Re (tilly) 1: Strict, strings and subroutines
in thread Strict, strings and subroutines

Changing @ISA at runtime is not always a good thing to do. If your application does use a lot of objects and method calls it will cause the method lookup cache to be cleared. So it will have the affect of slowing your program down. By how much, and if that is an issue really depends on the application though.