message: Update calss documentation
diff: @@ -52,12 +52,12 @@ namespace RINGMesh {
  * Generic factory
  * Example of use with A the base class and B, C derived classes
  * // Instantiation
  - * Factory< std::string, A, int, double > factory;
  + * using MyFactory = Factory< std::string, A, int, double >;
  * // Registration
  - * factory.register_creator< B >( "B" ); // B constructor takes an int and a double
  - * factory.register_creator< C >( "C" ); // C constructor takes an int and a double
  + * MyFactory::register_creator< B >( "B" ); // B constructor takes an int and a double
  + * MyFactory::register_creator< C >( "C" ); // C constructor takes an int and a double
  * // Creation
  - * std::unique_ptr< A > c = factory.create( "C", 2, 8.6 );
  + * std::unique_ptr< A > c = MyFactory::create( "C", 2, 8.6 );
  */
  template< typename Key, typename BaseClass, typename ...Args >
  class Factory: public GEO::InstanceRepo::Instance {
  