If we are ready with this one, I already did all the other questions of this year. They were even for me very easy, some of them having even a 3 or 4 character solution. I would appreciate it to raise the bar a little bit.
@rabbitgrowth Yes, being able to use any function for modified assignment is nice, although my boss frowns on me writing things like var{giant function here}←0
@rabbitgrowth Oh, maybe I misunderstood. The l on the left is affected, but the right argument to ∨ is the pass-through value of the assignment, i.e. what's on the right of ← — NOT the new value of l