10. The computer readable storage device of claim 9 , wherein said assignment structure further comprises a configurable copy attribute to select from an assignment by reference and an assignment by copy.
10. The computer readable storage device of claim 9 , wherein said assignment structure further comprises a configurable copy attribute to select from an assignment by reference and an assignment by copy. 11. The computer readable storage device of claim 10 , wherein said assignment by copy comprises an assignment by reference to a complex data structure with a copy of a top level object of said complex data structure.