Undefined Value

The Undefined class implements the value used in uninitialized variables and array members. There is one distinguished instance of the Undefined class in the reserved system variable undefined.

Constructor

undefined

Examples

-- check to see if MyLight has a target

if MyLight.target != undefined then

-- distance from light to target

dist=distance MyLight.pos MyLight.target.pos

else

-- distance from light to [0,0,0]

dist=length MyLight.pos

-- set CH_Hand1 to undefined so can test later to see if deleted

deleteChangeHandler CH_Hand1; CH_Hand1=undefined