[什么是惰性队列](%E4%BB%80%E4%B9%88%E6%98%AF%E6%83%B0%E6%80%A7%E9%98%9F%E5%88%97.md) [队列的两种模式](%E9%98%9F%E5%88%97%E7%9A%84%E4%B8%A4%E7%A7%8D%E6%A8%A1%E5%BC%8F.md) [声明惰性队列](%E5%A3%B0%E6%98%8E%E6%83%B0%E6%80%A7%E9%98%9F%E5%88%97.md)