Ignore the fact that catch usually means exceptions which usually means some kind of failure. A piece of code is running and it just started some work that’s going to take a long time in the background, there’s no point waiting and the program can do something more useful while the stuff happens in the background. It “throws” an exception that is caught by a scheduler multiple layers of function calls up the stack. The scheduler saves the return address into a list of pending work to get back to, and then goes to find something that it can make progress on. Eventually it completes the other work and is signalled that our background task is complete. It pops the return address off the list and jumps to it, continuing the function call exactly where it left off as though nothing happened.
02 业务漂移在蚂蚁集团减持到退出三大股东之前，众安在线已经因为创始股东的战略调整，不再独家享有它们的流量红利，在市场上陷入了“三马依赖症”的质疑，被迫开始寻找新增长点。。体育直播是该领域的重要参考
Фото: Alexander Kazakov / Reuters，推荐阅读电影获取更多信息
Германия начала сотрудничество с Францией в сфере ядерного оружияГермания и Франция начали сотрудничество в сфере ядерного оружия
Александра Статных (Редактор отдела «Путешествия»)