<p>I've created a MATLAB class, something like:</p>

<pre><code>classdef myclass

  properties
      x_array = [];
  end

  methods
    function increment(obj,value)
       obj.x_array = [obj.x_array ; value);
    end
  end
end
</code></pre>

<p>The problem is, the property <code>x_array</code> is never modified when I invoke the <code>increment()</code> function:
ex:</p>

<pre><code>&gt;&gt;s = myclass
&gt;&gt;increment(s,5)

&gt;&gt;s.x_array
ans = []
</code></pre>

<p>I did some research, and I reached a conclusion that this is because of MATLAB using Lazy Copy for objects, making my class inherit the HANDLE class should have solved this, but it didn't, does anybody know why this is happening? And if extending the handle class is indeen the solution, isn't this the right way to do it:</p>

<pre><code>classdef myclass &lt; handle
</code></pre>

<p>or are there any extra steps?</p>

This is similar to
this question
. In short all you should have to do is inherit from handle class.
Quick example
Contents of file myclass.m
```
```
classdef myclass<handle
    properties
        x_array = []
    end
    methods
        function obj=increment(obj,val)
            obj.x_array=[obj.x_array val];
        end
    end
end
```
```
Now from the Matlab command prompt, you can do the following
```
```
>> s=myclass;
>> s.increment(5)
>> s.increment(6)
>> s

s = 

myclass handle

properties:
    x_array: [5 6]

lists of methods, events, superclasses
```
```