me@r0bert.dev Robert Greener Methods and classes for object-oriented programming in R with or without references. Large effort has been made on making definition of methods as simple as possible with a minimum of maintenance for package developers. The package has been developed since 2001 and is now considered very stable. This is a cross-platform package implemented in pure R that defines standard S3 classes without any tricks. Henrik Bengtsson henrikb@braju.com https://github.com/HenrikBengtsson/R.oo/issues HenrikBengtsson/R.oo