小编ham*_*zzi的帖子

我有一个CRTP派生类，它是它可以继承的所有 CRTP 基类的可变模板。我想在派生类的方法（printAll 函数）中执行每个继承类的函数（在本例中为 print 函数）。我怎样才能做到这一点？

// Base Class 1
template<typename Derived>
struct Mult
{
  void print()
  {
    int a = (static_cast<Derived const&>(*this)).m_a;
    int b = (static_cast<Derived const&>(*this)).m_b;
    std::cout << "a * b: " << a * b << "\n";
  }
};

// Base Class 2
template<typename Derived>
struct Add
{
  void print()
  {
    int a = (static_cast<Derived const&>(*this)).m_a;
    int b = (static_cast<Derived const&>(*this)).m_b;
    std::cout << "a + b: " << a + b << "\n";
  }
}; …