Set variable to NULL

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

Description: NULL sets the value of a variable to NULL.

These three statements are semantically equivalent:

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

<null var="var"/>

Setting array item implicitly to NULL

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

Setting array item explicitly to NULL

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