Hi Thomas, I am aware of this problem in case one wants to use both options. I will work on this next year. Note that the overhead introduced by TObject on disk is marginal if you use compression. I see so many cases where users have plenty of members that are simple flags and for which the TObject::fBits woulkd be a much better alternative. Rene Brun Thomas Bretz wrote: > > Hi all, > > I have two classes A and B based on a class Base which inherits from > TObject, like: > > class Base : public TObject; > class A : public Base; > clase B : public Base; > > For A I want to write fUniqueId and fBits, for B I don't want to, > becuase: > - B is written a millons of times (here it is a matter of disc space) > - A is referenced by TRef objects. To use this feature I understood, > that I have to write fUniqueId. > > >From the documentation I found, that calling IgnoreTObjectStreamer is > only allowed for a class directly inherited from TObject (Base). What do > I do? Is it impossible? > > Best regards, > Thomas.
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