Set properties from Superclass in subclass

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elevonm
elevonm le 20 Août 2021
Commenté : Turlough Hughes le 20 Août 2021
Hello, I have defined a superclass 'food.m' that has certain properties:
classdef food
properties
vitamins
protein
carbs
end
end
Now I want to define a subclass that inherits from the above, and also sets the vitamins property (in other words, I will want all instances of this subclass to have the property 'Vitamins' set to "C")
classdef fruit < food
properties (Access = private)
vitamins = "C"
end
end
The following error is raised
%Cannot define property 'vitamins' in class 'fruit' because the property has already been defined in the
%superclass 'food'.
How do I fix this?
Thank you in advance for your help!

Réponse acceptée

Turlough Hughes
Turlough Hughes le 20 Août 2021
Modifié(e) : Turlough Hughes le 20 Août 2021
Set the Access attribute in the superclass:
classdef food
properties
protein
carbs
end
properties (Access = private)
vitamins
end
end
otherwise, the default is that vitamins is defined as a public property in the superclass.
You can get a list of default property attributes here.
  8 commentaires
elevonm
elevonm le 20 Août 2021
Thank you very much for your help!
Turlough Hughes
Turlough Hughes le 20 Août 2021
Happy to help :)

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