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

   MyLight = Targetspot pos:[10,20,100] target:(box())
   -- 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