void update(T d) {
vi->Data() = sae::serialization::convert_to_string<T>(d);
}
vertex_data_type& data() {
return *((vertex_data_type *) vi->Data());
}
T parse() {
T ret = sae::serialization::convert_from_string<T>(vi->Data());
return ret;
}
const vertex_data_type& data() const {
return *((vertex_data_type *) vi->Data());
}