// Created by Edward Finkelstein //Scott Meyers Effective Modern C++ #include #include using namespace std; template class Widget { T* ptr; public: Widget() {ptr=new T;} ~Widget() {delete ptr;} template void processPointer(U* x) { cout << *x; } void processOwnPointer() { cout << *ptr; } private: // template <> void processPointer (void*); //error: explicit specialization in non-namespace scope 'class Widget' }; template < > class Widget { void *ptr; public: Widget(){} ~Widget(){} void processOwnPointer(); }; template <> //for the class template <> //for the method void //return type Widget //class template is string ::processPointer //method template is void (void*) = delete; // template<> void //return type Widget //class template is void ::processOwnPointer () = delete; int main() { Widget x; x.processOwnPointer(); int *temp = new int(5); x.processPointer(temp); delete temp; Widget y; // void* t; y.processPointer(t); //error: use of deleted function 'void Widget::processPointer(U*) [with U = void; T = std::__cxx11::basic_string]' // task, create a specialized constructor for Widget Widget z; return 0; }

[Q&A] Template specialization