Hi, A month or two ago, there was some discussion of giving TVector3 and TLorentzVector virtual destructors. This doesn't appear to have been done yet in Root 2.25.3, but I hope it will be eventually. I wonder whether in addition it would be possible to derive them from TNamed instead of TObject. The TFolder class makes the ability to name things rather more useful. Dave dcasper@uci.edu
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