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ROOT Version: Not Provided
Platform: Not Provided
Compiler: Not Provided

I’ve been learning ROOT through youtube tutorials. This guy uses text editor as he demonstrated various functions and of course that requires constantly editing the same file. Though when he edits and runs the same file again, the output is something like
Warning In <TROOT:: Append>: Replacing existing TH1 …
and the program is updated but when i do the same thing i get
error: redefinition of

Is root always this partial?

I guess the “guy” is using ROOT 5 in his “youtube tutorials”.

Yes I confirm it is ROOT 5…