enum { success, failure, /* more status results */ } status;// Functions to read to and write to void pointers:typedef status(*set_func)(string const& src, void* dest);typedef status(*get_func)(string& src, void const* dest);// A value that knows how to be read from and written to:struct console_value {  void* v;  set_func set;  get_func get;  console_value(void* v_, set_func set_, get_func get_ ):    v(v_), set(set_), get(get_) {}};// the names of the user-modifiable values:typedef std::map< string, console_value > value_map;// you have to write the actual string <-> value conversionsstatus parse_value( string const& value, double& d );status parse_value( string const& value, int& d );status parse_value( string const& value, string& d );// etc.status print_value( string& result, double d );status print_value( string& result, int d );status print_value( string& result, string const& d );// etc.// helper code:template<typename T>struct setter_getter {private:  static status set_data( string const& value, T* t ) {    return parse_value( value, *t );  }  static status get_data( string& result, T const* t ) {    return print_value( result, *t );  }public:  static status set_helper( string const&  value, void* v ) {    return set_data( value, reinterpret_cast<T*>(v) );  }  static status get_helper( string& value, void const* v ) {    return set_data( value, reinterpret_cast<T const*>(v) );  }};template <typename T>void Bind(value_map& vm, string & const name, T *ptr){  typedef setter_getter<T> set_get;  console_value cv( ptr, set_get::set_helper, set_get::get_helper );  vm[name] = cv;}