more generic ofJoin

feature request for a more generic ofJoin() function that accepts vectors of all kinds of objects (float, int, ofVec2f, etc) rather than just string. anything that implements operator<<

here's an example using stl:

#include <iterator>
template <class T>
string ofJoin(vector<T>& elements, string delimiter) {
    stringstream result;
    copy(elements.begin(), elements.end(), ostream_iterator<T>(result, delimiter.c_str()));
    return result.str();
}

Locate the existing ofJoin() implementation and any tests or examples covering it. Compare its current string-only behavior with the provided ostream_iterator approach, then verify that supported object types using operator<< are joined correctly while existing string usage remains unchanged.