You can always check eg the Matrix package to show you how it's done. Cheers Joris
On Sat, Sep 23, 2017 at 6:17 PM, Iñaki Úcar <i.uca...@gmail.com> wrote: > > There is formally no such thing as an S3 class. Just S3 objects with a > > class attribute. You could extend a base class with an S4 class, like > > setClass("IntegerWithUnits", slots=c(units="Units"), > > contains="integer"). Sure, that's a disruptive change, but it would be > > in the right direction. > > > > Extending base classes is always a risky proposition, as you've > > discovered. Ideally you would override every transformation in order > > to adjust or carry over the representation accordingly. The problem is > > that there's a huge amount of transformations available for base > > classes, mostly not encapsulated by generics. > > > > Other possibilities include: > > - Convincing someone to make %*% an internal S3 generic > > - Promoting %*% to an R-level S3 generic, which would only work with > > code that sees your namespace > > > > Hopefully others have better ideas, > > Michael > > Thanks for your kind help and suggestions, Michael. I think I'll take > the last option as a workaround, at least until I evaluate the > advantages and drawbacks of a complete redesign. > > Iñaki > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > -- ----------- Biowiskundedagen 2017-2018 http://www.biowiskundedagen.ugent.be/ ----------- Joris Meys Statistical consultant Ghent University Faculty of Bioscience Engineering Department of Mathematical Modelling, Statistics and Bio-Informatics tel : +32 (0)9 264 61 79 joris.m...@ugent.be ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel