queue的底层结构是队列,一般用于缓冲、并发访问
queue也有size、isEmpty、contains、clear等方法
更多信息参考 https://blog.csdn.net/rocling/article/details/103834545?spm=1001.2101.3001.6650.12&utm_medium=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~Rate-12-103834545-blog-103711184.pc_relevant_3mothn_strategy_and_data_recovery&depth_1-utm_source=distribute.pc_relevant.none-task-blog-2~default~CTRLIST~Rate-12-103834545-blog-103711184.pc_relevant_3mothn_strategy_and_data_recovery&utm_relevant_index=13