struct Test {
    a ?string = 'foo'
    b ?int    = 3
    c ?f64    = 1.1
    d ?[]int  = [1]
    e []?int  = [?int(2)]
}

fn test_dump_opt1() ? {
    a := ?int(0)
    b := dump(a)
    assert b? == 0
}

fn test_dump_opt2() ? {
    c := ?int(none)
    d := dump(c)
    assert d == none
}

fn test_comptime() ? {
    v := Test{}
    $for f in Test.fields {
        a := dump(v.$(f.name))
        b := v.$(f.name)
        dump(a)
        dump(b)
    }
}