Hi Valeri, I tried the following macro: { gROOT->Reset(); char s[32]; THashList *l = new THashList; for (int i = 0; i < 10; i++) { THashList *h = new THashList; l->Add(h); for (int j = 0; j < 10; j++) { sprintf(s, "aap %d", j); h->Add(new TObjString(s)); } } } is that something like what you try doing? To store such a collection use something like: TFile x("hash.root","recreate") l.Write("l",TObject::kSingleKey) and to read it do: TFile x("hash1.root") THashList *l = (THashList*)x.Get("l") l->Print(); or is this not what you want? Cheers, Fons. Tioukov Valeri wrote: > > Hi rooters, > > I have data structure organized as following: > > THashList of objects type A > where A is > THashList of objects type B > > The Hash() of objects B is unic inside A but could be the same for > B's from different A's. > > It worked perfectly before I tried to store and restore this staff. > > I note that after restoring the objects B with the same Hash() becomes > the first stored B. > So Hash() of any objects treated as the global one during the storing. > > But if I'd like to have the structure as described above and I want to > store it. Is it possible to do in the correct way? > > Best regards > Valeri -- 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 7677910
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