如何定义或ISO C ++实现C＃房产吗？ [英] How to Define or Implement C# Property in ISO C++?

问题描述

如何定义或ISO C实现的C＃属性++

How to Define or Implement C# Property in ISO C++ ?

假设下面的C＃代码：

int _id;

int ID
{
    get { return _id; }
    set { _id = value; }
}

我知道C＃转换成get和set线的getXXX和setXXX方法编译时间。在C ++中，程序员通常定义这两个功能，手动，如：

I know C# convert the get and set lines to getXXX and setXXX methods in compile time. in C++ , programmers usually define these two function manually like :

int _id;

int getID() { return _id; }
void setID(int newID) { _id = newID; }

不过，我想有C＃语法或为了有一个简单的喜欢它的东西可用性。
在C＃中，我们可以用这样的属性：

but, I want to have the C# syntax or a stuff like it in order to have a simple usability. In C#, we can use properties like :

ID = 10;              // calling set function
int CurrentID = ID;   // calling get function

在C ++中，我们可以用我们喜欢的功能：

In C++, we can use our function like :

setID(10);                 // calling set function
int CurrentID = getID();   // calling get function

现在告诉我，我怎么能实现ISO C ++的C＃属性。

Now tell me how can I implement the C# properties in ISO C++.

感谢。

推荐答案

由于亚历山大C.已经说明，这是非常，尴尬和不值得的，而是让你将如何做到这一点的例子

As Alexandre C. has already stated, it's very awkward and not really worth it, but to give an example of how you might do it.

template <typename TClass, typename TProperty>
class Property
{
    private:
        void (TClass::*m_fp_set)(TProperty value);
        TProperty (TClass::*m_fp_get)();
        TClass * m_class;

        inline TProperty Get(void)
        {
            return (m_class->*m_fp_get)();
        }

        inline void Set(TProperty value)
        {
            (m_class->*m_fp_set)(value);
        }

    public:
        Property()
        {
            m_class = NULL;
            m_fp_set = NULL;
            m_fp_set = NULL;
        }

        void Init(TClass* p_class, TProperty (TClass::*p_fp_get)(void), void (TClass::*p_fp_set)(TProperty))
        {
            m_class = p_class;
            m_fp_set = p_fp_set;
            m_fp_get = p_fp_get;
        }

        inline operator TProperty(void)
        {
            return this->Get();
        }

        inline TProperty operator=(TProperty value)
        {
            this->Set(value);
        }
};

在你的类，你想使用它，您可以创建一个新的领域的财产，你必须调用初始化你的get / set方法传递给财产。 （在.ctor PREF）

In your class where you wish to use it, you create a new field for the property, and you must call Init to pass your get/set methods to the property. (pref in .ctor).

class MyClass {
private:
    int _id;

    int getID() { return _id; }
    void setID(int newID) { _id = newID; }
public:
    Property<MyClass, int> Id;

    MyClass() {
        Id.Init(this, &MyClass::getID, &MyClass::setID);
    }
};

这篇关于如何定义或ISO C ++实现C＃房产吗？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！