HOMEWORK

Design a node

node switch $($on$,$ off: bool$)$

returns $($state: bool$)$;

such that:

state raises $($goes from false to true$)$ if on is true;

state falls $($goes from true to false$)$ if off is true;

everything behaves as if state was false at the origin;

switch must work properly even if on and off have the same value