c++c++11stdarray

How to initialize static std::array with static const variable?

How to initialize static std:array that uses static const variable as size? I tried searching for similar questions but std::array is relatively new so theres not much to be found.

// ExampleClass.h
class ExampleClass {
    public:
        static const size_t NUMBER_OF_INDEXES = 5;
    private:
        static std::array<int, NUMBER_OF_INDEXES> myArray;
};
Solution

  • Like any other static data member, ExampleClass::myArray should have an out-of-line definition in exactly one translation unit, where you write down its type and its qualified name as usual:

    std::array<int, ExampleClass::NUMBER_OF_INDEXES> ExampleClass::myArray = {1, 2, 3, 4, 5};