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

0 vote142 views1 answer
C++ generic pointer
C++
17 votes118 views3 answers
PRINT IN C ++
C++
2 votes97 views1 answer
Sfml draw tex
C++
5 votes99 views3 answers
Cpp random number in range
C++
0 vote105 views1 answer
Vector of strings initialization c++
C++
5 votes111 views10 answers
Array
C++
0 vote90 views2 answers
Get min and max element index from vector c++
C++
7 votes97 views4 answers
C++ hide console
C++
1 vote162 views1 answer
C++ uniform_real_distribution get same result
C++
0 vote90 views1 answer
Raspberry pi mount external hard drive
C++