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Dictionary.icontains(keyStr)


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 Function  [other Function type actions]

 Item  [operators of similar scope]

 Query Boolean  [other Query Boolean operators]

 Baseline

 As at baseline


Dictionary.icontains(keyStr)

The expression:

$MyDictionary.icontains(key) 

is true if the dictionary contains the designated key or case variations of it.

Note that keyStr is literal string and not a regex pattern (unlike the operator's use chained with some other data types).

Dictionaries are case-sensitive, and Dictionary.contains(key) is available for case-sensitive matching.