I create a new copy of the Set because the functions called during the loop might modify it by removing elements via cleanup functions. Without a copy, iterating directly on the Set could cause unpredictable behavior.
It does, but the L-Theanine has an almost neutralising effect on the more jittery and frenetic aspects that caffeine can bring. It leaves you feeling what I would describe as more focused and calm, rather than alert and anxious
As the other posters have shown it’s not that hard.
Most graphics specs will explicitly say how tie break rules work.
The key is to work in fixed point (16.8 or even 16.4 if you’re feeling spicy). It’s not “trivial” but in general you write it and it’s done. It’s not something you have to go back to over and over for weird bugs.