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  1. #include <iostream>
  2. using namespace std;
  3.  
  4.     enum class ClassIds : int {
  5.     	DerivedID
  6.     };
  7.  
  8. struct Interface {
  9.     virtual void foo() = 0;
  10.     virtual int bar() = 0;
  11. };
  12.  
  13.  
  14.     template<class T>
  15.     class Base : public Interface {
  16.     public:
  17.         int getType() const { return getTypeId(); }
  18.         static int getTypeId() { return T::ClassId; }
  19.     };
  20.  
  21.     class Derived : public Base<Derived> {
  22.     public:
  23.        static const int ClassId = (int)ClassIds::DerivedID;
  24.  
  25. 	   virtual void foo() { }
  26. 	   virtual int bar() { return 1; }
  27.  
  28.     };
  29.  
  30. int main() {
  31. 	Derived der;
  32. 	Interface* iface = &der;
  33. 	iface->foo();
  34. 	iface->bar();
  35.  
  36. 	return 0;
  37. }
Success #stdin #stdout 0s 3292KB
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https://ideone.com/ETRZHW
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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