Set variable to NULL

XML

<null var="var" key="(no key)"/>

<null /> sets the value of a variable to <null />.

These three statements are semantically equivalent:

XML

					<null var="var[key]"/>
					<null var="var.key"/>
					<null var="var" key="key"/>

Attributes

Name	Type	Description	Defined By
var	var	Variable name	null
key	string	Key	null

Results

Binding	Type	Predicate
var	null	N/A

Examples

Setting variable to NULL

XML

<null var="var"/>

Setting array item implicitly to NULL

XML

<null var="var[key]"/>

Setting array item explicitly to NULL

XML

<null var="var" key="key"/>