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T O P I C R E V I E W
JokerOne	Posted - 03/04/2016 : 10:45:50 AM Origin Ver. 9.1 and Service Release 1(Select Help-->About Origin): Operating System: Win 7 Is there a LabTalk command available that can check if a certain tree node or tree branch exists? e.g. tree aaa; aaa.bbb= 1 exist(aaa.bbb) [ = 4 expected, but results:24 ] exist(aaa.ccc) [ = 0 expected, but results:24 ]
3 L A T E S T R E P L I E S (Newest First)
cpyang	Posted - 03/07/2016 : 12:30:37 PM ORG-875 is the tag that I put down for future references. It is the ID for our internal development database. CP
JokerOne	Posted - 03/07/2016 : 05:52:29 AM Thank you for your help. Exactly, what I was looking for. Despite the fact, that I do not know what ORG-875 is, but nevermind.
cpyang	Posted - 03/04/2016 : 10:46:05 PM Looks like we have implemented this for internal use and never documented it. I debugged into it and found ORG-875 and it really work, so you are in luck with this one, see code below tree aaa; aaa.bbb= 1; aaa.ccc= 2; aaa.ddd= 3; exist(aaa.anything,24)=;//this will only check the tree existed and no node checking if(exist(aaa.anyjunk)==24) type "aaa is a tree"; aaa@=;//this should return 2 for a branch aaa.bbb@=;//this should return 1 for a leaf if(aaa.ccc@>0) type "aaa.ccc is valid tree node"; if(aaa.junk@==0) type "aaa.junk is not valid"; if(aaa@==2) type "aaa is a tree branch"; if(aaa.bbb@==1) type "aaa.bbb is a tree leaf";

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