override.cpp11.adoc

override

Works similarly to other languages, like java

struct base {
	virtual void foo(unsigned int);
};
struct derived : base {
	void foo(unsigned int) override;
};

Triggers a compile-error if base::foo changes signature or is not virtual anymore.

override

Can be used for destructors too

struct base{
	virtual ~base();
};
struct derived : base {
	~derived() override;
};

As destructors cannot change signature, the advantage in this case is that in case ~base() is not virtual anymore, instead of triggering UB, it’s a compiler error.