MATLAB Object-Oriented Programming

classdef EmployeeList

properties

Name

Email

Location

end

properties (Dependent, Hidden)

OfficeNumber

end

methods

function obj = set.OfficeNumber(obj,val)

obj.Location = val;

end

function val = get.OfficeNumber(obj)

val = obj.Location;

end

end

end

Saving and Loading EmployeeList Objects

You can load old instances of the EmployeeList class in the presence of the new class

version. Code that refers to the OfficeNumber property continues to work.

Forward and Backward Compatibility

Suppose that you want to be able to load new EmployeeList objects into systems that

still have the old version of the EmployeeList class. To achieve compatibility with old

and new versions:

• Define the OfficeNumber property as Hidden, but not Dependent.


• Define the Location property as Dependent.

In this version of the EmployeeList class, the OfficeNumber property saves the value

used by the Location property. Loading an object assigns values of the three original

properties (Name, Email, and OfficeNumber), but does not assign a value to the new

Location property. The lack of the Location property in the old class definition is not a

problem.

classdef EmployeeList

properties

Name

Email

13 Saving and Loading Objects