🎧 Help Desk · Mission 4 of 6
↩️ Undo
As each ticket is closed, its id goes on a stack of what's been done. Oops: the last one wasn't really fixed. Undo it.
Your mission
- Make closed = [ ].
- Go through tickets, and Push each t.id onto closed.
- Then Pop closed into undone, and Tell "Reopened " + undone.
Getting the mission ready…