MATLAB: Define shared subfunctions inside a classdef *.m file

Question

I want to define a relatively small class (small enough that it makes sense to do everything inside of one file). I want to reuse a common subfunction between several methods, and having this subfunction inside of the classdef would make it cleaner, easily portable and automatically private. However, I have not been able to do so. Is there any way to accomplish it?

>> d = dummy;
>>??? Undefined function or variable 'my_pi'.
>>
>>Error in ==> dummy>dummy.dummy at 10
>>          obj.dummy = my_pi();  
dummy.m:
classdef dummy
  properties 
      value;
  end
  methods
      function y = my_pi()
          y = 3.141592;
      end        
      function obj = dummy()
          obj.dummy = my_pi();
      end
  end
end

Answer 1

You can define subfunctions in the same file after the definition of the class, ie

   classdef dummy
   ...
   ...
   end % classdef
   function out = subfun1( in )
   ...
   end

/ per