MATLAB: Creating a hard link among properties of an object

hard linkobjectoopproperties

Hello,
I have a class called Module that has 3 properties: InternalVariables, ExternalVariables, and AllVariables. InternalVariables and ExternalVariables both contain symbolic column vectors. I want to define AllVariables as the superposition of InternalVariables and ExternalVariables, and if I change either InternalVariables or ExternalVariables, AllVariables gets updated automatically. Is there a way to do this by using a hard link?
Thank you,
Kevin

Best Answer

A couple of thoughts
Why not just make AllVariables a dependent property. Then every time it's queried it's calculated on the fly. MATLAB passes by reference so unless you have thousands of variables this should not be a performance penalty.
Another approach would be with listeners. The basic plan would be to have the constructor set listeners for changes to internal and external properties. This avoids having to have an explicit setter for each property. Of course, having an explicit setter for each property isn't necessarily a bad thing, especially if you need to validate the new property values anyway. In fact, I would probably just take this approach and use a setter every time.
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