Ha, yeah I was expecting an in-depth read on gcc's devirtualization feature.

I thought about the rarely used Virtual Base Class of C++. https://isocpp.org/wiki/faq/multiple-inheritance#virtual-inh...

Ha, yeah. Post should be renamed "... virtual classrooms ..."

I was actually thinking class type families ala BETA. Basically, a class can be a member of another class and overridden when the containing class is extended.