RE: [ROOT] verify existence of an index in TTree file

From: Philippe Canal (pcanal@fnal.gov)
Date: Sat Aug 23 2003 - 00:40:01 MEST

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Hi,

Just check the return value of GetIndex:
	if (tree->GetIndex()==0) {
	   // no index yet, let's build it.
	}
Cheers,
Philippe

-----Original Message-----
From: owner-roottalk@pcroot.cern.ch
[mailto:owner-roottalk@pcroot.cern.ch]On Behalf Of John Wu
Sent: Friday, August 22, 2003 11:11 AM
To: roottalk@pcroot.cern.ch
Subject: [ROOT] verify existence of an index in TTree file


In a file containing only one TTree, what is the best way to verify 
whether an index has been built with BuildIndex ?

John



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