Loop over multiple ttree in one root file at once

Dear ROOTers
I have a root file with multiple TTree (different names )with same structure. usually I use makeclass() to handle one tree
I want to know if there is a way to do the same for multipe TTree at once

If you want to analyse all trees at one shot, you need to create a TChain and then run MakeClass on it.

If you want to analyse them one by one, you can easily reuse the current class (generated for a single tree) using its automatically generated “YourClass(TTree *tree)” constructor.

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