QS1 var cmd

home/reference v1.x/<var>

<var> has ALWAYS to be the first node inside a <script> or <que> node

Simple Example

assign an array to a variable:

<var name="variablename">{ARRAY(0,0,0)}</var>

reference a expression to a variable:

<var name="variablename">{-> ARRAY(COS(alpha),sin(alpha),2)}</var>

Attributes

• name = name of a variable inside the scope of the node

Explained

<var> instantiates a variable and either

• evaluates the {expr} and sets the result as its value
• sets the reference to the {expr} as its value

setting a reference to a variable will execute the expression each time the variable is used further along the code and returns the result of its evaluation. In a sense it is a definition of a function call that can be referenced by the variable.