Objects (without `ref`)are value types and those semantics also attach to their
components. If you want to have shallow copying for objects, the easiest way is
to use the `{.shallow.}` pragma.
Example:
import deques
type
container[T] = object {.shallow.}
val: seq[T]
var c = container[int](val: @[1, 2, 3])
echo repr(c.val)
echo cast[int](c.val[0].addr)
var deque = initDeque[container[int]]()
deque.addFirst(c)
var c2 = deque.popFirst()
echo repr(c2.val)
echo cast[int](c2.val[0].addr)
Note also that `a[1]` accesses the _second_ element of a `seq`. If you want the
first element, use `a[0]`.
