On 30 November 2017 at 11:37, Iñaki Úcar <i.uca...@gmail.com> wrote: > 2017-11-30 3:14 GMT+01:00 Suzen, Mehmet <mehmet.su...@gmail.com>: >> My understanding is that there is no inconsistency. `is` does what it >> claims, from the documentation: >> >> ‘is’: With two arguments, tests whether ‘object’ can be treated as >> from ‘class2’. >> >> With one argument, returns all the super-classes of this >> object's class. > > Note that this is not in the documentation since a year ago. >
As far as I understood and gather, starting from methods v3.3.2, the following new reference is added: * Chambers, John M. (2016) Extending R, Chapman & Hall. (Chapters 9 and 10.) Pushing that details there, I assume. Best, Mehmet ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel