Anonymous

    //This method has potential for some micro-optimizations. Somebody *please*    //convince me *not* to do them.    void arg(const string& a) {        if (next_arg >= 9) {            return;        }        size_t offset = offsets[next_arg];        str.erase(offset, 2); //erase the placeholder        str.insert(offset, a); //insert the new string in place        next_arg++;    }