Matlab复制构造函数 [英] Matlab copy constructor

问题描述

除了用一个输入添加构造函数并显式复制其属性以外，是否有更好的方法为matlab的句柄派生类实现复制构造?

Is there a better way to implement copy construcor for matlab for a handle derived class other than adding a constructor with one input and explicitly copying its properties?

obj.property1 = from.property1;  
obj.property2 = from.property2;

等

谢谢， 丹妮

推荐答案

如果您想要一种假定可以复制所有属性的快速解决方案，请查看PROPERTIES函数.这是一个自动复制所有属性的类的示例:

If you want a quick-and-dirty solution that assumes all properties can be copied, take a look at the PROPERTIES function. Here's an example of a class that automatically copies all properties:

classdef Foo < handle
  properties
    a = 1;
  end
  methods
    function F=Foo(rhs)
      if nargin==0
        % default constructor
        F.a = rand(1);
      else
        % copy constructor
        fns = properties(rhs);
        for i=1:length(fns)
          F.(fns{i}) = rhs.(fns{i});
        end
      end
    end
  end
end

和一些测试代码:

f = Foo(); [f.a Foo(f).a] % should print 2 floats with the same value.

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