Simple handle problem (I think)
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Hi, I'm having trouble understanding how to use handles but I understand the basic principle so I know I should be using them for what I do. I want to make links between 2 objects of the same class. Here is an exemple.
class classA
properties
val1 = classB.empty;
val2 = [0,0];
%here the variable I should probably use handle.
links = classA.empty;
end
%here is how I use it in a script or function :
obj1 = classA;
obj2 = classA;
%I add obj2 to the list of links obj1 is doing and vice versa:
obj1.links=[obj1.links,obj2];
obj2.links=[obj2.links,obj1];
I guess links could be an object type handle but I have no clue how I should write it, and how to set it.
采纳的回答
Sebastian Castro
2017-4-17
编辑：Sebastian Castro
2017-4-17
This should work, with the exception that classes in MATLAB are by default "value classes". This means that when you say
obj1.links=[obj1.links,obj2];
and then refer to obj1.links(1) (assuming it was previously empty), you're actually referring to a copy of obj2 instead of obj2 itself.
To declare a class as a handle class, i.e., passed by reference, change the first line of your class definition to inherit from the handle superclass:
classdef classA < handle
- Sebastian
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2017-4-17
2017-4-17
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