I find the TTree::Draw() is a very useful method for my analysis but it is a bit confusing sometime, especially when a complex expression is used. I see the Draw() still draws something but I am not sure it is what I want.
For the purpose of debugging, if I provide TTree::Draw() the “varexp” and “selection”, can I see the translations of those to an equivalent C/C++ code snippet? By that, I can see how TTree::Draw() loops and fill the histograms.