MATLAB: How to set a private property

classesconstructorMATLABoopprivate properties

Ok so I'm used to c++, and in c++ a private variable (property in matlab) can be accesed by every method in that class, I'm trying to do the same here in the constructor, I want it to establish some default values if no arguments have been provided, this is my code:
classdef modulo
    properties (Access=private)
        A
        B
        R
        actuadores
    end
    methods
        function obj=modulo(BB,Actuadores)
            if nargin<1
                obj.B=[0,0,0];
            end
            if nargin<2
                obj.actuadores=0;
            else
                obj.B=BB;
                obj.actuadores=Actuadores;
            end
        end
    end
end
But then, I do
smth=modulo
or
smth=modulo([4 3 2],5)
and I expect:
smth = 
    modulo with properties:
               A: []
               B: [0 0 0]
               R: []
      actuadores: 0
or
smth = 
    modulo with properties:
               A: []
               B: [4 3 2]
               R: []
      actuadores: 5
But instead I get:
smth = 
    modulo with no properties.
It works as intended when I don't set any private attributes, but how can I access those properties if I want them to be private?

Best Answer

https://www.mathworks.com/help/matlab/matlab_oop/property-attributes.html
Look at the description of Access:
"Use Access to set both SetAccess and GetAccess to the same value. "
So setting Access to private sets GetAccess to private.
Then in the description of GetAccess:
"MATLAB does not display in the command window the names and values of properties having protected or private GetAccess or properties whose Hidden attribute is true."
Therefore what you are seeing is the designed behavior for having set Access to 'private': you have told it not to display those properties when the object is displayed.
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