MATLAB: OOP: object setting property in a method without overriding object in workspace

methodoopproperty

Let's say I have class pizza with properties pepperoni. Then i have method combo1 that sets pepperoni = 1;

Ok that was easy, but now in the workspace I type…

pizza1=pizza; %creates object

pizza1.combo1;

so now pepperoni should be equal to 1….

nope, pizza1.pepperoni is not 1.

how do I do this without resaving the object to pizza1?

ex pizza1=pizza1.combo1; pizza1.pepperoni1=;

Best Answer

Derive from the handle class.

Related Solutions

MATLAB: Accessing subclass methods from abstract superclass

classdef (Abstract) ParentClass
    %PARENTCLASS Testing properties of abstract classes
    
    methods (Abstract = true, Static = true)
        doA();
        doB();
    end
    
    methods (Static = true)
        function doC()
            doA();
            doB();
        end
    end
end

This doesn't do what you think. Normally Static methods are called using the name of the class that defines them, though they can be called on class instances like non-Static methods. Since doC is Static and accepts no inputs, it can only be called via a class name.

Nothing in the code you've written makes it possible to call any class methods doA or doB. They are not called as Static methods with a class name, nor do they accept any inputs. So there's nothing telling MATLAB it should call the methods of either ParentClass or ChildClass. Unless there are functions doA and doB (not methods) ParentClass.doC() would error.

If you use per isakson's approach, doA and doB probably shouldn't be Static in either ParentClass or ChildClass.

MATLAB: OOP: Object gone out of scope!

This is expected. x is a local variable to the constructor, so it will go out of scope after instantiating the object.

You have two options:

Declare x as a property of Class1
Use functions such as assignin or evalin to stick x into the MATLAB base workspace (or the function where the Class1 object is instantiated)

I'd strongly recommend going with the first option.

- Sebastian

Best Answer

Related Solutions

MATLAB: Accessing subclass methods from abstract superclass

MATLAB: OOP: Object gone out of scope!

Related Question