Design Patterns and Refactoring

Direct coupling, lots of start-up and shut-down overhead. class Image { int m_id; static int s_next; public: Image() { m_id = s_next++; cout << " $$ ctor: " << m_id << '\n'; } ~Image() { cout << " dtor: " << m_id << '\n'; } void draw() { cout << " drawing image " << m_id << '\n'; } }; int Image::s_next = 1; int main() { Image images[5]; for (int i; true;) { cout << "Exit[0], Image[1-5]: "; cin >>

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Proxy デザイン C++