Hi, I wanted to overload subsref in a class to use the {} notation to index a class property (obj.stimuli below):
classdef MyDataClass
properties
stimuli = []
info = ''
end
properties (SetAccess = private)
Date
end
methods
function obj = MyDataClass()
obj.stimuli = {'hickory';'dickory';'dock'};
obj.info = 'example class';
obj.Date = clock;
end
function sref = subsref(obj,s)
switch s(1).type
case '.'
sref = builtin('subsref',obj,s);
case '()'
sref = builtin('subsref',obj,s);
case '{}'
sref = builtin('subsref',obj.stimuli,s);
end
end
function testMe(obj)
for i = 1:size(obj.stimuli,1)
fprint('%s ',obj.stimuli{i});
end
printf('\n')
end
function out = mySize(obj)
out = size(obj.stimuli,1);
end
end
end
However, the problem is that overloading the . operator causes problems because now unless every method returns a value (testMe doesn't, mySize does in the example), then subsref will fail:
>> m=MyDataClass
m =
MyDataClass
Properties:
stimuli: {3x1 cell}
info: 'example class'
Date: [2012 8 30 18 3 40.5521]
Methods
>> m{1}
>> m.info
>> m.mySize
>> m.testMe
Error using MyDataClass/testMe
Too many output arguments.
Error in MyDataClass/subsref (line 18)
sref = builtin('subsref',obj,s);
What is the best way to handle this robustly? Having to parse each s.subs name to call builtin will fix this but is not very elegant and liable to break as the class grows. I basically need something like a varargout.
