constness.cpp

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#include <iostream>

using namespace std;

class Test
{
public:
        explicit Test(int val) : i(val) {}

        Test(const Test& that) = default;

        // Test& operator=(const Test & that) {
        //      int * var = const_cast<int*>(&i);
        //      *var = that.i;
        //      return *this;
        // }

        int getValue() const { return i; }

private:
        const int i; // const data member verwijderd impliciete assignment operator
};

int main()
{
        Test b(2);
        cout << "b.i = " << b.getValue() << "\n";

        // Test t(3);
        // b = t;              // !!!!!! assignment zonder custom assignment operator
        // zal
        // een compile error geven

        cout << "b.i = " << b.getValue() << "\n";
        return 0;
}