Operator Type:
Operator Scope of Action:
Operator Purpose:
Data Type Returned:
Operator First Added:
Operator in Current Baseline:
Operator Last Altered:
Property [other Property type actions]
Item [operators of similar scope]
Dictionary, Set & List operations [other Dictionary, Set & List operations operators]
boolean test
v9.0.0
Baseline
As at baseline
Syntax note: Operators without any defined mandatory arguments may omit their empty closing parentheses
Dictionary.empty()
Dictionary.empty
A Boolean-type property. Returns true
if the dictionary has no keys, and is false
otherwise.
$MyDictionary = {cat:animal; dog:animal; rock: mineral};
$MyBoolean = $MyDictionary.empty;
MyBoolean is now false
$MyDictionary = ;
(or$MyDictionary = {};
)
$MyBoolean = $MyDictionary.empty;
MyBoolean is now true