Operator Type:
Operator Scope of Action:
Operator Purpose:
Operator First Added:
Operator in Current Baseline:
Operator Last Altered:
Property [other Property type actions]
Item [operators of similar scope]
Non-query Boolean [other Non-query Boolean operators]
v5.7.0
Baseline
As at baseline
Syntax note: Operators without any defined mandatory arguments may omit their empty closing parentheses
List/Set.empty()
List/Set.empty
This returns a Boolean depending on whether the list is empty. In this context Set and List type can be regarded as interchangeable. If empty, the return value is true
, if the attribute has content then false
is returned.
$MyList = [hello;world]; $MyBoolean = $MyList.empty;
$MyBoolean is set to false
as content is found. But
$MyList = []; $MyBoolean = $MyList.empty;
$MyBoolean is set to true
as no content is found.