Write an STL container into a ROOT file

ROOT
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I’d like to save an STL container into a ROOT file. A lot of documentation is available for doing so for TTree branches, but I need to save a single container so I’d avoid using a TTree. Is there a way to do something similar to calling the Write() method for a TObject?
Thanks

1 Like
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Hi Nicola,

sure. For example:

TFile outputFile("outputFile.root","RECREATE");
std::vector<int> v {1,2,3,4};
outputFile.WriteObject(&v,"myVector");
outputFile.Close();

Cheers,
D

2 Likes
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Thanks Danilo. Before asking I searched for some “WriteSomething” method in the TFile doxygen but I found nothing, just because I didn’t expand the lists of inherited member functions…

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Yes if we show the whole list expanded then people complained that it makes the doc unreadable . It is hard to satisfy every body …

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