[tw5] Check the existence of an index: dataTiddler

Mohammad If an index exists but has no value it may as well not exist. Can you simply get the value of a particular index and if its empty it does not exist (or is empty). regards Tony -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To

[tw5] Check the existence of an index: dataTiddler

Assume you have a dataTiddler (dictionary or json) with some indexes like aa bb cc, ... how to check is an index is existed in this dataTiddler One solution seems like below. here *myDic *tiddler is checked for the existence of *uu *index. <$list filter="[[myDic]indexes[]] +uu"