constexpr int SomeValue = 0;

struct SomeClass {
    explicit SomeClass (int) { }
    void operator () (int = 0) { }
};

enum SomeEnum { ValueA, ValueB, ValueC, ValueD };

void example1 () {
    auto closure = [] (int) {
        return [] () {
        };
    };
    closure(SomeValue)();
}

void example2 () {
    SomeClass(SomeValue)();
}

void example3 (SomeEnum x) {
    switch (x) {
    case ValueA:
    case ValueB:
    case ValueC:
    case ValueD: ;
    }
    SomeClass(ValueB)(ValueD);
}

void bonus () {
    auto closure = [] (int) {
        return [] () {
        };
    };
    closure(SomeValue)();
    SomeClass(SomeValue)();
}









/*
 *
    static const auto setupChart = [&] (When when) {
        return [&, when] () {
            switch (when) {
            case BeforeAddSeries:
            case BeforeAddAxes:
            case BeforeSetView:
            case BeforeShowView:
            case AfterEverything:
            }
        };
    };

    (void)setupChart;
//    setupChart(BeforeSetView)();
*/