This one can be pretty frustrating when it happens: there are cases where taking &mut self can throw runtime errors due to re-entrancy. This pops up more frequently than I would have expected given that the default behaviour of JS is single threaded, but JS’s async doesn’t have to respect Rust’s compile-time exclusivity2 checks.
// 易错点5：必须将当前元素入栈（作为左侧元素的候选更大值，漏写则栈始终为空）
，详情可参考新收录的资料
Кардиолог раскрыла опасное влияние смены сезонов на сердце и сосуды07:40
Let flattening (assoc)