Frits van Bommel wrote:
Which helps (a bit) with the two instances allocated in main(), but is rather unhelpful with the 100_000_000 allocated in opAdd() (they're returned)...
The use of classes in this example is like using a screwdriver as a hammer. It'll work in a pinch, but a hammer works a lot better. If you're allocating 100_000_000 classes in a tight loop, some refactoring looks to be in order.
In particular, classes are *meant* to be used as reference types, but the program is trying to treat them as value types. Virtual functions are orthogonal to what value types are - a continuing problem C++ programs have is conflating value types with reference types.
