Hi Jean-Eric, this cannot be done automatically, you have to make some add method that first looks if the object is already in the list (like list->FindObject(newObj)) and only add the method if FindObject() returns 0. Cheers, Fons. On Wed, 2003-06-04 at 16:05, Jean-Eric Campagne wrote: > Hello, > > If I make add twice the same instance of an object in a TList, then at the > Delete phase of the TList there is a crash for known reason. > How, I can ask the TList to keep Unique Instance of an Object? > > Regards > Jean-Eric Campagne > > ........................................................................... > .LAL - IN2P3 - CNRS > .LAL - B.P 34 - 91898 Orsay Cedex - France > .Piece 108 > .Tel +33 (0)1 64 46 84 29 > .Fax +33 (0)1 64 46 83 97 > ........................................................................... -- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7679480
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