Is it possible to create mixins in C++ (C++11) - I want to create behavior per instance, not per class.
In Scala I'd do this with anonymous classes
val dylan = new Person with Singer
If these were your existing classes:
class Person
{
public:
Person(const string& name): name_(name) {}
void name() { cout << "name: " << name_ << endl; }
protected:
string name_;
};
class Singer
{
public:
Singer(const string& song, int year): song_(song), year_(year) {}
void song() { cout << "song: " << song_ << ", " << year_ << endl; }
protected:
string song_;
int year_;
};
Then you could play around with this concept in C++11
template<typename... Mixins>
class Mixer: public Mixins...
{
public:
Mixer(const Mixins&... mixins): Mixins(mixins)... {}
};
to use it like this:
int main() {
Mixer<Person,Singer> dylan{{"Dylan"} , {"Like a Rolling Stone", 1965}};
dylan.name();
dylan.song();
}