Maybe the question is already exist in ROOT digest but I failed to
find it:
How to know if an object is exist or not ?
One more question is :
Is there a easy way to lookup ROOT digest if my question has
already been answered or not, e.g. to find a my keyword is in the
contant (not subject) of a e-mail ? Trying to go through every
message is really not easy.
Sincerely yours
Xie