Sometimes though you can expect to have another implementation at some point in the time however. A good design anticipates which are the key interfaces where t

Sometimes though you can expect to have another implementation at some point in the time however. A good design anticipates which are the key interfaces where this applies. Second thing is that sometimes interfaces can act as binary firewalls. Recently I was able to split a few classes conveniently into a shared library since their functionality was expressed in a pure c++ interface.