struct Foo {
    age  int
    name string
}

// different order
struct Bar {
    name string
    age  int
}

fn test_order() {
    f := Foo{
        age:  4
        name: 'f'
    }
    b := Bar{
        ...f
    }
    assert b == Bar{'f', 4}
    b2 := Bar{
        ...f
        name: 'b2'
    }
    assert b2.name == 'b2'
    assert b2.age == 4
}

struct Qux {
    name  string
    age   int
    extra bool
}

fn test_extra() {
    f := Foo{4, 'f'}
    q := Qux{
        ...f
        extra: true
    }
    assert q == Qux{'f', 4, true}
}