How come so many are complaining about this being a notation issue? It is as standard a notation I've ever seen for expressing this. It's perfectly okay to be a

How come so many are complaining about this being a notation issue? It is as standard a notation I've ever seen for expressing this. It's perfectly okay to be an engineer/developer and not read that on the spot. But if you're a graduate student or young faculty member doing research in computer science and give that as the explanation, I think that's just being defensive. When I took CompSci 101 15 years ago, basic mathematical notation like this was necessary to pass.