queue

So the story is I had a presentation a few days ago explaining about what is Queue and how it works, like how to do enQueue, deQueue, etc, etc. After everything's done, the lecturer gave us a task to explain about Queue ADT on a piece of paper. We have never been taught anything regarding ADT...

Let's say I have two trigger: TriggerA fires every x seconds (by its own event) and runs TriggerB. TriggerB does lot's of stuff. So much stuff, that it's just impossible to fully execute all actions of Trigger B before TriggerA wants to fire again. 1. Does TriggerA just fire before all actions...

I just would like to know if it is possible to detect every single unit in a building queue. So, if somebody trained a footman, a rifleman, a knight, 2 more footmen, another knight, and a second rifleman in that order, could I use triggers to detect all of them? I need help because a building...