CODEWITHSUNDEEP
matlabfunctionclassmethodsproperties
therman
therman

Reputation: 13

Matlab set property from class method

I'm trying to access a class property from within a method function. When I modify the property from the constructor, the setter is called and the property is changed. But when I modify the property from another method, the property reverts to the previous value, when the function is terminated, even though the setter is called again.

What is wrong with my code, please help me! Thanks

The code is below:

 classdef random
    properties
        x
    end

    methods
        function obj=random(obj)
            obj.x = 2
            obj.foo(1)
            obj %output x:2, but it should be 1!
        end
        function foo(obj,A)           
            obj.x = A;
            obj %output x:1
        end
        function obj = set.x(obj,newVal)
            obj.x = newVal;
        end
    end
 end

Upvotes: 1

Views: 305

Answers (1)

ninehundred
ninehundred

Reputation: 241

Somebody correct me if I am wrong, but I assume the obj in foo is passed by value. So it does get updated within that function space but not returned. So what works is to have it return the object and catch that in the constructor. Try:

classdef random
  properties
      x
  end

  methods
      function obj=random(obj)
          obj.x = 2;
          obj = obj.func1(4);
          disp(obj.x);
      end
      function [obj] = func1(obj,A)           
          obj.x = A;
          disp(obj.x);
      end
      function obj = set.x(obj,newVal)
          obj.x = newVal;
      end
  end
 end

Upvotes: 2

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