Singleton c++

class S
{
    public:
        static S& getInstance()
        {
            static S    instance; // Guaranteed to be destroyed.
                                  // Instantiated on first use.
            return instance;
        }
    private:
        S() {}                    // Constructor? (the {} brackets) are needed here.

        // C++ 03
        // ========
        // Don't forget to declare these two. You want to make sure they
        // are unacceptable otherwise you may accidentally get copies of
        // your singleton appearing.
        S(S const&);              // Don't Implement
        void operator=(S const&); // Don't implement

        // C++ 11
        // =======
        // We can use the better technique of deleting the methods
        // we don't want.
    public:
        S(S const&)               = delete;
        void operator=(S const&)  = delete;

        // Note: Scott Meyers mentions in his Effective Modern
        //       C++ book, that deleted functions should generally
        //       be public as it results in better error messages
        //       due to the compilers behavior to check accessibility
        //       before deleted status
};

Source: stackoverflow.com

Similar codes

1 vote202 views1 answer
C++ directory listing
C++
1 vote195 views1 answer
Random number of 0 or 1 c++
C++
-1 vote165 views1 answer
Palindrome no example
C++
-1 vote173 views1 answer
String interpolation in c++
C++
5 votes167 views1 answer
Initialize vector to all zeros c++
C++
0 vote153 views1 answer
How to scan array in c++
C++
0 vote166 views1 answer
Contoh space
C++
0 vote161 views1 answer
C++ capture screen as pixel array
C++
0 vote196 views1 answer
C++ delete int
C++
-1 vote172 views1 answer
How to write hello world c++
C++