// Example of using our combo class with a vector.  This version is
// highly inefficient.  The print function in particular is badly
// written because it uses a value parameter (which makes an
// independent copy of the vector) and it uses a simple variable in
// the foreach loop that also makes a copy of each combo object.  We
// were able to see lots of messages about objects being constructed,
// copied, and destroyed.

#include <iostream>
#include <string>
#include <vector>

using namespace std;

class combo {
public:
    combo(int initValue = 0, const string & initText = "foo") {
        value = initValue;
        text = new string(initText);
        cout << "in main constructor" << endl;
    }
    
    int get_value() const {
        return value;
    }

    const string & get_text() const {
        return *text;
    }

    combo(const combo & rhs) {
        value = rhs.value;
        text = new string(*rhs.text);
        cout << "in copy constructor" << endl;
    }

    ~combo() {
        delete text;
        cout << "in destructor" << endl;
    }

    combo & operator=(const combo & rhs) {
        if (this != &rhs) {
            value = rhs.value;
            *text = *rhs.text;
        }
        cout << "in assignment operator" << endl;
        return *this;
    }

private:
    int value;
    string * text;
};

void print(vector<combo>  v) {
    cout << "entering foreach loop" << endl;
    for (combo c : v) {
        cout << c.get_value() << " " << c.get_text() << endl;
    }
}

int main() {
    vector<combo> v;
    v.push_back(combo(3, "bar"));
    v.push_back(combo(15, "baz"));
    v.push_back(combo(7, "mumble"));

    cout << "calling print:" << endl;
    print(v);

    return 0;
}