Class Bar

examples/src/json_traits_macros_examples.cpp:21–278

    };

    class Bar : public Foo
    {
        static const bool bar = true;
        JSONCONS_TYPE_TRAITS_FRIEND
    };

    class Baz : public Foo 
    {
        static const bool baz = true;
        JSONCONS_TYPE_TRAITS_FRIEND
    };

    enum class BookCategory {fiction,biography};

    inline
    std::ostream& operator<<(std::ostream& os, const BookCategory& category)
    {
        switch (category)
        {
            case BookCategory::fiction: os << "fiction, "; break;
            case BookCategory::biography: os << "biography, "; break;
        }
        return os;
    }

    // #1 Class with public member data and default constructor   
    struct Book1
    {
        BookCategory category;
        std::string author;
        std::string title;
        double price{0};
    };

    // #2 Class with private member data and default constructor   
    class Book2
    {
        BookCategory category;
        std::string author;
        std::string title;
        double price{0};

        JSONCONS_TYPE_TRAITS_FRIEND
    public:
        Book2() = default;

        BookCategory get_category() const {return category;}

        const std::string& get_author() const {return author;}

        const std::string& get_title() const{return title;}

        double get_price() const{return price;}
    };

    // #3 Class with getters and initializing constructor
    class Book3
    {