structured_binding_type_deduction.cpp

struct RetVal
{
    int x;
    int& y;
    const int& z;
};

RetVal doSomething(int& a, const int &b) {
    return {10, a, b};
}

int main()
{
    int a = 100;
    auto [m, n, o] = doSomething(a, 200); 

    assert(m == 10);
    assert(n == 100);
    assert(o == 200);
    
    assert((std::is_same_v<decltype(m), int>));
    assert((std::is_same_v<decltype(n), int&>));
    assert((std::is_same_v<decltype(o), const int&>));
    
    return 0;
}