> On Jan 16, 2022, at 11:15 PM, Sven Barth <pascaldra...@googlemail.com> wrote: > > The class type already is a unique "ID" for each class type when doing an > equal comparison. You can essentially take the address of the VMT as the > constant values that the loaded value is compared against.
Does that look something like this then? and if so, this is better then doing the if-statement block, like string case statements? case PtrUInt(o.ClassType.ClassInfo) of PtrUInt(TObject.ClassInfo): writeln('TObject'); end; Question then is how you get the VMT address as a constant at compile time. Regards, Ryan Joseph _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal