Why long type is not one numerical variable?

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1

If the address points to a single numerical variable, the leaflist is optional:

Three * tree;
int value; tree->Branch(branchname, &value);

but if

long value; tree->Branch(branchname, &value);

Error in TBranch::TLeaf: Illegal data type

anybody know why?

2

Hi @cxwx1,
I think you encountered a known limitation of TTree.

Cheers,
Enrico

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