list := [1 2 3 4 5 6 7 8 9 ...]

// calling get on an &list will get a reference
&list.get(2).assume1() = 24
// calling get on a list will get a value
should_not_be_changeable := list.get(3).assume1()
&should_not_be_changeable = 24

list.get(2) == [24]
&& list.get(3) != [24]