如何为Visual Studio 2008 C ++生成自动属性（get，set） [英] How to generate automatic properties (get, set) for Visual Studio 2008 C++

问题描述

阅读了有关生成吸气剂的问题和setters在Visual Studio和尝试（有点）所描述的技术，我失败凄惨地毕业超越写的Getters和Setters的longhand方式。

虽然我认识到封装（在这种情况下是一个类的私有成员）的概念上的优势，编写25个getter和setter是浪费空间和我的时间。 p>

为什么25？分开形成的膨胀因子（约2.5）我只是不知道在什么时候，我需要访问这一个变量在未来。我想我可以写一个函数，返回所有的和鱼出我需要的一个，但如果我添加更多的成员（经常做），那么函数必须在整个代码中更改。

我喜欢建议的表单这里 for VS 2008：

  string sName {get;组; } 
  

但它不会在C ++中编译。这只适用于 .NET和C＃吗？

有没有一种整洁的方式来模拟这个在C + +？

解决方案

在 Microsoft Compiler（非便携式）

中指定此技巧

  struct person 
 {
 std :: string m_name; 
 void setName（const std :: string& p_name）
 {
 m_name = p_name; 
} 
 const std :: string& getName（）const 
 {
 return m_name; 
} 
 //这是属性的名称和get，set（put）函数
 __declspec（property（get = getName，put = setName））std :: string name; 
}; 
 int main（）
 {
 person p; 
 
 p.name =Hello World！; // setName（...）
 std :: cout<< p.name; // getName（...）
} 
  

创建成员变量加上这些成员的 getters 和 setters 变量，为每个 getter / setter 对创建一个属性您可以调用它任何你想要的，因为你必须指定getter和setter为这个属性。

---

只是为了有趣：）

  #define属性\ 
 public：const Type ##& get ## Variable（）const {return Variable; }; \ 
 void set ## variable（const Type& Variable ## _）{Variable = Variable ## _;} 
 
 
 struct Test 
 {
 property（int，x）; property（int，y）; 
 property（std :: string，text）; 
}; 
 
 int main（）
 {
 Test t; 
 
 t.setx（10）; 
 t.sety（10）; 
 t.settext（Hello World at：）; 
 std :: cout<< t.gettext（）<< < t.getx（）<< ，< t.gety（）; 
} 
  

Having read this question on generating getters and setters in Visual Studio and tried (somewhat) the techniques described, I have failed miserably to graduate beyond the longhand way of writing Getters and Setters.

While I recognize the conceptual advantage of encapsulation (private members of a class in this case), writing 25 getters and setters is a waste of space and my time.

Why 25? Well apart form the exageration factor (approx 2.5) I just don't know at what point I will need access to that one variable in the future. I guess I could write a function that returns all of them and fish out the one I need, but if I add more members (often do) then the function must be changed throughout the code.

I like the form suggested here for VS 2008:

string sName { get; set; }

But it won't compile in C++. Is this just for .NET and C#?

Is there some tidy way to simulate this in C++?

解决方案

Thanks @Dan for pointing out this trick in Microsoft Compiler (non-portable)

Here is the way:

struct person
{
    std::string m_name;
    void setName(const std::string& p_name)
    {
    	m_name = p_name;
    }
    const std::string& getName() const
    {
    	return m_name;
    }
    // Here is the name of the property and the get, set(put) functions
    __declspec(property(get = getName, put = setName)) std::string name;
};
int main()
{
    person p;

    p.name = "Hello World!"; // setName(...)
    std::cout << p.name;     // getName(...)
}

After creating your member variables plus the getters and setters of these member variables, you create a property for each getter/setter pair. You can call it whatever you want, because you have to specify the getter and setter for this property.

---

Just for fun :)

#define property(Type, Variable) private: Type Variable; \
      public: const Type##& get##Variable() const { return Variable; }; \
      void set##Variable(const Type& Variable##_) { Variable = Variable##_;}


 struct Test
 {
     property(int, x); property(int, y);
     property(std::string, text);
 };

int main()
{
    Test t;

    t.setx(10);
    t.sety(10);
    t.settext("Hello World at: ");
    std::cout << t.gettext() << " " << t.getx() << ", " << t.gety();
}

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