struct Test {
pub:
    bar []int = [1, 2, 3]
pub mut:
    foo []int = [1, 2, 3]
}

struct TestAlias {
mut:
    list []string
}

fn main() {
    arr := [1, 2, 3] // declared as immutable!
    mut arr_mut := if true { arr } else { []int{} }
    mut arr_mut2 := match true {
        true { arr }
        else { [0] }
    }
    arr_mut[0] = 999
    arr_mut2[1] = 999
    println(arr)
    println(arr)
    assert arr == [1, 2, 3]

    a := Test{}
    mut arr_mut3 := a.foo
    arr_mut3[0] = 999
    assert a.foo == [1, 2, 3]

    mut arr_mut4 := a.bar
    arr_mut4[0] = 999
    assert a.bar == [1, 2, 3]

    s := TestAlias{
        list: ['aaa']
    }
    mut s2 := s
    s2.list[0] = 'bbb'

    _ := a.bar
}