Perfect forwarding and c perfect forwarding

Perfect forwarding and c perfect forwarding

Perfect forwarding

#include <iostream>#include <string>#include <utility>using std::cout;using std::endl;using std::string;class  Name{public:    Name(const string & aName) :name{aName}    {        cout << "Lvalue Name constructor." << endl;    }    Name(string && aName) :name{ std::move(aName) }    {        cout << "Rvalue Name constructor." << endl;    }        const string & GetNmae()const    {        return name;    }private:    string name;};class Person{public:    template<typename T1,typename T2>    Person(T1 && first, T2 && second) :firstname{ std::forward<T1>(first) }, seondname{ std::forward<T2>(second) }    {        cout << "-------------------" << endl;    }    string getName()const    {        return firstname.GetNmae() + " " + seondname.GetNmae();    }private:    Name firstname;    Name seondname;};int main(){    Person me{ string{"Ivor"},string{"Horton"} };    cout << me.getName() << endl << endl;    string first{"Fred"};    string second{"Fernackerpan"};    Person other{first,second};    cout << other.getName()<< endl << endl;    Person brother{ first,string{"Bloggs"} };    cout << brother.getName() << endl << endl;    Person another{"Richard","Horton"};    cout << another.getName() << endl;}

Output result:

Rvalue Name constructor.
Rvalue Name constructor.
-------------------
Ivor Horton

Lvalue Name constructor.
Lvalue Name constructor.
-------------------
Fred Fernackerpan

Lvalue Name constructor.
Rvalue Name constructor.
-------------------
Fred Bloggs

Rvalue Name constructor.
Rvalue Name constructor.
-------------------
Richard Horton