Custom class properties and method attributes
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Jan Kappen
on 26 Oct 2021
Commented: Ill-Conditioned Matrix
on 8 Jun 2023
Is there a way to add custom property or method attributes to handle classes? It is done by several classes or toolboxes, e.g. the unit testing framework allows to add tags to the methods: Tag Unit Tests - MATLAB & Simulink (mathworks.com)
classdef ExampleTagTest < matlab.unittest.TestCase
methods (Test)
function testA (testCase)
% test code
end
end
methods (Test, TestTags = {'Unit'})
function testB (testCase)
% test code
end
function testC (testCase)
% test code
end
end
I'm talking about the attributes "Test" and "TestTags".
My application would greatly benetfit from a finer granular control of properties for a DTO (data transfer object) class. I want to use argument validation but add additional options like overridable properties and don't want to use inputParser anymore :)
Thanks!
6 Comments
Jim Svensson
on 22 Mar 2023
As far as I know Matlab does not (version<=R2023) support custom property attributes. But if you are not using some of the existing ones for anything you might use them. For example SetObservable or GetObservable can be used to mean something else if you are not using listeners.
Accepted Answer
Matt J
on 26 Oct 2021
I don't know why it's not documented, but apparently there is a Description attribute that can be added, e.g.,
classdef myclass
properties (Description='propTag')
prop
end
methods (Description='methTag')
function meth1
end
end
methods
function meth2
end
end
end
3 Comments
Matt J
on 26 Oct 2021
Edited: Matt J
on 26 Oct 2021
Would you expect that Description field to be existent in the next releases?
Since it's not documented, it's hard to know for certain. Hopefully, someone from the MathWorks will weigh in.
Does this address your question, though? If so, I'd be much obliged if you would Accept-click the answer.
Ill-Conditioned Matrix
on 8 Jun 2023
The problem is that Description and DetailedDescription come from the comment block before the property declaration. If you set Description from the property declaration, it will override the comments, but I'm not sure whether we can rely on that behavior.
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