Re: [PHP-DEV] SPL development interest

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May 18, 2020 22:10 ("Levi Morrison via internals")
In my opinion, another key takeaway: inheritance as a code reuse
mechanism can really bite you. SplStack extends SplDoublyLinkedList
and this exposes a bunch of methods on a stack that don't make any
sense. It also means there are constraints on how well you can
optimize the stack, because you have these methods that don't make
sense on a stack that you _must_ support because some poor bloke
somewhere actually used them (may God have mercy on them).