How dos one construct an std::array in a constructor initializer sequence?

Code:
myClass
{
public:
    myClass()
        : array_of_2_ints (1, 2) //<- not working...
    { }

private:
    ::std::array<int, 2> array_of_2_ints
}
I've tried all permutations of () and {} I could think of...