Category: C++

Parameterize functions over types with template syntax.

Build generic containers/utilities like Box or Matrix.

Handle errors with exceptions when failures are exceptional.

Throw exceptions and catch them in ordered handlers.

Override virtual base methods in derived classes.

Enable dynamic dispatch with virtual member functions.

Declare interfaces with `virtual void f() = 0`.

Design abstract bases that define interfaces for derived implementations.

Overload operators to make class types feel natural.

Inherit from more than one base class when truly needed.