How to enable ROOT namespace

Hello all,

I’m using root 5.34 and I’m interested in using the ROOT namespace as described here:
Albeit a USE_ROOT_NAMESPACE macro is mentioned in the text, it is not clear to me how I enable the ROOT namespace. Any help would be highly appreciated.


The statement “In ROOT 5 all classes are in the ROOT namespace” is not true and the “USE_ROOT_NAMESPACE macro” does not exist at all.

OK, thanks for the fast clarification.