Is there anyway to use a member function as a default parameter?

问题

It tried something like this, which doesn't work. Is there a way to get a similar effect?

class A
{
public:
  int foo();
  void bar(int b = foo());
};

回答1:

Yes. Overload the function and call the member-function in it.

void bar() { bar(foo()); }

来源：https://stackoverflow.com/questions/4901233/is-there-anyway-to-use-a-member-function-as-a-default-parameter