Demonstrate class specialization : class specialization « template « C++ Tutorial

1. C++ Tutorial
2. template
3. class specialization

#include <iostream>
using namespace std;

template <class T> class MyType {
  T x;
public:
  MyType(T a) {
    cout << "Inside generic MyType\n";
    x = a;
  }
  T getx() {
    return x;
  }
};

// Explicit specialization for int.
template <> class MyType<int> {
  int x;
public:
  MyType(int a) {
    cout << "Inside MyType<int> specialization\n";
    x = a * a;
  }
  int getx() {
      return x;
  }
};

int main()
{
  MyType<double> d(10.1);
  cout << "double: " << d.getx() << "\n\n";

  MyType<int> i(5);
  cout << "int: " << i.getx() << "\n";

  return 0;
}

Inside generic MyType
double: 10.1

Inside MyType specialization
int: 25