Let’s look at the C++ code used to test the timing to walk through inheritance and virtual functions. The parent is the class PinOutputAbstract. It represents an output pin on an Arduino: ...

It's not uncommon in example code to save a couple of lines for clarity. That, and Peter was throwing him down the template rabbit hole (my favorite in C++, by the way), so he might as well make ...

<br><br>Basically I'm searching for a way of specifying a policy that a class must have a method with partial signature <i>getValue () </i> and yet not tie down the return type. i.e. every class ...