Initializing std::tuple from initializer list

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I'm wondering whether the tuple can be initialized by initializer list (to be more precise - by initializer_list of initializer_lists)? Considering the tuple definition:

typedef std::tuple< std::array<short, 3>,
                    std::array<float, 2>,
                    std::array<unsigned char, 4>,
                    std::array<unsigned char, 4> > vertex;

is there any way of doing the following:

static vertex const nullvertex = { {{0, 0, 0}},
                                   {{0.0, 0.0}},
                                   {{0, 0, 0, 0}},
                                   {{0, 0, 0, 0}} };

I just want to achieve same functionality I got using struct instead of tuple (thus only arrays are initialized by initializer_list):

static struct vertex {
    std::array<short, 3> m_vertex_coords;
    std::array<float, 2> m_texture_coords;
    std::array<unsigned char, 4> m_color_1;
    std::array<unsigned char, 4> m_color_2;
} const nullvertex = {
    {{0, 0, 0}},
    {{0.0, 0.0}},
    {{0, 0, 0, 0}},
    {{0, 0, 0, 0}}
};

There is no reason I must use tuples, just wondering. I'm asking, because I'm unable to go through g++ templates errors which are generated by my attempt of such tuple initialization.

@Motti: So I missed the proper syntax for uniform initialization -

static vertex const nullvertex = vertex{ {{0, 0, 0}},
                                         {{0.0, 0.0}},
                                         {{0, 0, 0, 0}},
                                         {{0, 0, 0, 0}} };

and

static vertex const nullvertex{ {{0, 0, 0}},
                                {{0.0, 0.0}},
                                {{0, 0, 0, 0}},
                                {{0, 0, 0, 0}} };

But it seems that all the trouble lies in arrays, which got no constructor for initializer_list and wrapping arrays with proper constructor seems not so easy task.

1 Answers
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