asit-dhal

struct A1 {
    A1(int w, int x, int y) : w(w), x(x), y(y){}
    int w;
    int x;
    int y;
};

struct B1 : public A1 {
    B1(int w, int x, int y) : A1(w, x, y) {}
};

asit-dhal

struct A {
    A(int w, int x, int y) : w(w), x(x), y(y){}
    int w;
    int x;
    int y;
};

struct B : public A {
    B(int w, int x, int y, int z):A(w, x, y),z(z) {}
    int z;

asit-dhal

struct A {
    A(int w, int x, int y, int z) : w(w), x(x), y(y), z(z){}
    int w;
    int x;
    int y;
private:
    int z;
};

int main()

asit-dhal

int main ()
{
    std::map<std::string, std::string> countryCapitals {
        {"India", "New Delhi"},
        {"Germany", "Berlin"},
        {"USA", "Newyork"}
    };
    
    if (auto const [itr, success] = countryCapitals.insert({"USA", "Moscow"}); success) {
        std::cout << "insert successful for country: " << itr->first << " capital: " << itr->second << std::endl;

asit-dhal

int main ()
{
    std::map<std::string, std::string> countryCapitals {
        {"India", "New Delhi"},
        {"Germany", "Berlin"},
        {"USA", "Newyork"}
    };
    
    for (auto const& [country, capital] : countryCapitals) {
        std::cout << country << " => " << capital << std::endl;

asit-dhal

int main ()
{
    std::array<int, 3> cppArr{1, 2,3};
    
    auto [e1, e2, e3] = cppArr;
    assert(e1 == 1);
    assert(e2 == 2);
    assert(e3 == 3);
    
    int cArr[] = {10, 20, 30};

asit-dhal

struct RetVal
{
    int a;
    std::string b;
};

RetVal doSomething()
{
    // do something
    return {10, "Test"};

asit-dhal

int main ()
{
    auto t = std::make_tuple (10, 'a', "Value");

    auto& [t1, t2, t3] = t;
    (void)t3;
    t1 = 20;
    t2 = 'z';
    assert (t1 == std::get<0>(t));
    assert (t2 == std::get<1>(t));

asit-dhal

int main ()
{
    auto t = std::make_tuple (10, 'a', "Value");

    int t1;
    std::string t3;
    std::tie(t1, std::ignore, t3) = t;
    assert (t1 == 10);
    assert (t3 == "Value");

asit-dhal

int main()
{
    auto t = std::make_tuple(10, 'a', "Value");
    
    auto [t1, t2, t3] = t;
    assert(t1 == 10);
    assert(t2 == 'a');
    assert(t3 == "Value");
    
    return 0;