of course this rabbit hole goes deeper, and we have a paper using this technique for string constraint solving that i’d love to derail this post into, but i’ll save that for another time. the main point is that symbolic derivatives are a more powerful and efficient generalization of Brzozowski’s original idea, and they form the core of the new RE# engine. fun fact: symbolic derivatives are also implemented in Z3 (the SMT solver) for its sequence theory - so in some sense we’re inching closer to having an SMT solver’s core machinery inside a regex engine.
One in 20 babies experiences physical abuse, global review finds
，详情可参考新收录的资料
Message clarity and style matter
There isn't much to say about Vanilluxe other than it's literally just an ice cream cone with a face. Well, two faces, technically. It looks like two ice cream cones smashed together because it's the third form of an evolutionary line, and I guess they needed to do something to differentiate it from the other two, which also just look like ice cream cones. I mostly put Vanilluxe on this list because I really like ice cream.