Avoid warning “a set method for non-dependent property should not access …”

Question

I have a class which has some properties and 2 are related, in the example called param1, param2. They are independent, just constrained. param2 must b

Answer 1

You could use two layers of properties

• one layer which is exposed and Dependent
• one layer which is private and actually stores the values

The similar technique is used here in the documentation: Avoid Property Initialization Order Dependency.

classdef TestClass < handle  
    properties (Access = private)
        privateParam1;
        privateParam2;
    end

    properties (Dependent)
         param1;
         param2;
    end

    methods
        function p1 = get.param1(obj)
            p1 = obj.privateParam1;
        end

        function p2 = get.param2(obj)
            p2 = obj.privateParam2;
        end

        function set.param1(obj, input)
            obj.privateParam1 = input;
            if (isempty(obj.privateParam2) || obj.privateParam2 < obj.privateParam1)
                obj.privateParam2 = obj.param1; 
            end
        end

         function set.param2(obj, input)
            if (~isempty(obj.privateParam1) && obj.privateParam1 > input)
                obj.privateParam2 = obj.privateParam1;
            else
                obj.privateParam2 = input;
            end
         end
    end
end

The trick here: privateParam1 and privateParam2 stores the two values. The get and set only implemented for the exposed properties param1 and param2: the get returns simply the inner property and in the set both of them can be used without the analyzer warning as they are marked as Dependent.