It is not in Pharo 6/6.1 but in recent Pharo 7. Integrated using PR871
https://github.com/pharo-project/pharo/pull/871 https://github.com/pharo-project/pharo/pull/871/files Have fun T. > Gesendet: Samstag, 24. März 2018 um 10:22 Uhr > Von: "Hernán Morales Durand" <hernan.mora...@gmail.com> > An: "Any question about pharo is welcome" <pharo-users@lists.pharo.org> > Betreff: [Pharo-users] Can I use stateful Traits in Pharo 6.1? > > Suddenly I need a stateful trait and had a quick look at this paper : > http://scg.unibe.ch/archive/papers/Verw11bFlexibleObjectLayouts.pdf > > Is this supported right now? > Any code example out there? > > Cheers, > > Hernán > >