Class World

02-ExposingClasses/classes.cpp:9–24

#include <vector>

struct World
{
    void set(std::string msg) { mMsg = msg; }
    void many(boost::python::list msgs) {
        long l = len(msgs);
        std::stringstream ss;
        for (long i = 0; i<l; ++i) {
            if (i>0) ss << ", ";
            std::string s = boost::python::extract<std::string>(msgs[i]);
            ss << s;
        }
        mMsg = ss.str();
    }
    std::string greet() { return mMsg; }
    std::string mMsg;
};

using namespace boost::python;