gistfile1.txt

#include <iostream>

template<typename T>
struct NoDefault {
    NoDefault() = delete;

    NoDefault(T const& inner) : inner{inner} {}

    operator T() {return inner;}

    T inner;
};

struct X {
    NoDefault<double> x;
    NoDefault<double> y;
    NoDefault<double> z;
};

X correct_order() {
    double x = 0;
    double y = 1;
    double z = 2;
    return X {
        .x = x,
        .y = y,
        .z = z
    };

    std::cout << "what the fuck?" << std::endl;
}

int main(int argc, char *argv[]) {
    auto x = correct_order();

    std::cout << x.x << " " << x.y << " " << x.z << std::endl;
}