Lazy DFAs (2010) are a clever optimization to mitigate the O(2^m) blowup of DFA construction, by only constructing the states that you actually visit. lazy DFAs reduce the theoretical automata construction time to either O(2^m) or O(n), whichever is lower. you could argue that it’s theoretically no longer linear time, since you could have a regex that creates a new state for every character in the input, but in practice you will keep revisiting the same states. for all intents and purposes it behaves more like O(n) with some initial wind-up time. the main downside of lazy DFAs is that they are more complex to implement, and you have to ship a compiler as part of your regex algorithm. i want to highlight Rust regex and RE2 as excellent implementations of this approach, which you can also see in the benchmarks.
Ring founder and CEO Jamie Siminoff believes police would have “solved” the Nancy Guthrie case if people had more cameras on their doors—including Guthrie’s.，推荐阅读爱思助手下载最新版本获取更多信息
It’s not just oil. Around one fifth of globally traded liquefied natural gas moved through the Strait of Hormuz in 2024, according to the Energy Information Administration, making it one of the most critical nodes in the world’s energy system. Tanker‑tracking data show that Saudi Arabia alone shipped about 5.5 million barrels per day through the strait in 2024. With about 38% of total crude oil flowing through, the passage is essential for Gulf exporters. While workarounds do exist, including existing pipelines that crisscross their way through the Arabian Peninsula, their limited capacity would struggle to make up for flows that would be lost in a full closure of the strait, leaving the global market particularly susceptible to any sustained disruption.，这一点在Line官方版本下载中也有详细论述
It’s time to pull the plug on plug-in hybrids
The strong data meant investors are pricing out the likelihood of a cut in the first half of this year, noted Deutsche Bank’s Jim Reid this morning: “The probability of a cut by the June meeting (which would be the first with a new chair) fell to just 39% by the close, the lowest so far this year. So clearly there’s growing skepticism that a new chair can start cutting straight away, particularly with the data as strong as it is right now.”