not in 6.1 (and they will not be available ever, since is not a backportable thing).
but you can use them in 7.0a :) Esteban > On 24 Mar 2018, at 10:22, Hernán Morales Durand <hernan.mora...@gmail.com> > wrote: > > 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 >