____
           /  | \
          2|  | |1
           |  v |
say(scalar(() = ($a, $b, $c)))
    ^         |
    |         |3
     \_______/

##</code><code>##

             _______________________
            /     \                 \
           |       |1                |2
           v       |                 |
say(scalar(aassign(list($a, $b, $c), list()))
    ^      |
    |      |3
     \____/