I read some old slides from ROOT7 (indico.cern.ch/event/471936/con … -Intro.pdf) which mentioned interoperability with STL and “no context state: gDirectory […]”
I’d like to raise an old suggestion which seems to contradict with current ROOT design: is it possible to make the copy constructor of histograms copy their directory, so I can put them into std::vector? (TH1I copy constructor does not copy current directory)
The example code on root.cern.ch/root-7
TFilePtr file = TFile::Recreate("jetmuontag.root");
makes it seem to me that this is still implemented effectively with some global variable (or static member of some class).
PS: I just subscribed to the root7-discussion mail list but it doesn’t allow me (lightweight account firstname.lastname@example.org) to read the archive.