c - Does C11 have C#-style properties? - Stack Overflow

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c++ - Does C++11 have C#-style properties? - Stack Overflow



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C++ doesn't have this built in, you can define a template to mimic properties functionality:

template <typename T>
class Property {
public:
    virtual ~Property() {}  //C++11: use override and =default;
    virtual T& operator= (const T& f) { return value = f; }
    virtual const T& operator() () const { return value; }
    virtual explicit operator const T& () const { return value; }
    virtual T* operator->() { return &value; }
protected:
    T value;
};

To define a property:

Property<float> x;

To implement a custom getter/setter just inherit:

class : public Property<float> {
    virtual float & operator = (const float &f) { /*custom code*/ return value = f; }
    virtual operator float const & () const { /*custom code*/ return value; }
} y;

To define a read-only property:

template <typename T>
class ReadOnlyProperty {
public:
    virtual ~ReadOnlyProperty() {}
    virtual operator T const & () const { return value; }
protected:
    T value;
};

And to use it in class Owner:

class Owner {
public:
    class : public ReadOnlyProperty<float> { friend class Owner; } x;
    Owner() { x.value = 8; }
};

You could define some of the above in macros to make it more concise.

via Stack Overflow

December 16, 2024 at 02:56PM