pointers in object-oriented matlab programing

Question

nathan blanc 2020-8-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/585041-pointers-in-object-oriented-matlab-programing

评论： Walter Roberson 2020-8-28

I want to create several objects that can "communicate with each other"

for instance, let's say i have a class called "child" and a class called "woman", and i want each child to have a property "mother" and each woman to have a property "children". these properties should contain some sort of pointer to the other objects, so that i can (for instance) add a function to the "woman" class named "feed_children" and i can go over all all her children and change some parameter.

is there a way to do this? i note here that i don't want to simply use some sort of structure, where the children are contained in a "struct" inside the "mother" object. i want all the objects to appear in the workspace and have independent existence, but to have some way of pointing at each other. i know that in many object oriented languages this is very easy to do

many thanks

i attach here my code if anyone is interested, the "TA_system" class is the mother (components are children) and a duct is a component.

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Walter Roberson 2020-8-27

MATLAB objects derived from "handle" class effectively use pointers.

nathan blanc 2020-8-27

thank you for your answer walter, could you expand on that? i tried to read about handle objects before posting the question, my understanding was that they cannot do what i am tryind to do. could you explain how you would do what i asked uding handle objects?

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Answer 1

Walter Roberson 2020-8-27

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在 MATLAB Online 中打开

classdef woman < handle
    properties
        children = handle([]);
    end
    methods 
        function obj = woman
        end
        function addchild(obj, this_child)
            obj.children(end+1) = this_child;
        end
    end
end
classdef child < handle
    properties
        mother = handle([]);
    end
    methods
        function obj = child(this_mother)
            obj.mother = this_mother;
            addchild(this_mother, obj);
        end
    end
end