how to interpret the static code in c++11

Question

I just found some source codes, written in C++11. The code is like this:

inline Class& function() {
    static Class x;
    return x;
}

and then for using this function I faced:

function().app();

Is this function() implements the Singleton Pattern? How it is working? It seems strange to me.

Does this answer your question? [Singleton: How should it be used](https://stackoverflow.com/questions/86582/singleton-how-should-it-be-used) — Mgetz, Jun 08 '20 at 13:42
[This may also be useful](https://stackoverflow.com/a/1008289/332733) — Mgetz, Jun 08 '20 at 13:44

score 0 · Answer 1 · answered Jun 08 '20 at 13:31

The subroutine-static means on the stack, and return & means return a pointer to that, all very singular but no guarantee there is no Class x elsewhere in the process. Wiki says you must hide the constructor, have a class method to return a reference to a class-static object: https://en.wikipedia.org/wiki/Singleton_pattern

how to interpret the static code in c++11

1 Answers1