Before string caching, the code would dynamically generate this banner based on your current terminal dimensions on every frame. But that’s wasteful! Now, we pre-compute every banner size (accounting for any amount of shutdown time remaining) ahead of time and slam that pre-computed banner into a byte buffer, skipping the intermediate allocation.
self.conn.close()。关于这个话题，Line官方版本下载提供了深入分析
，详情可参考safew官方下载
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习题链接：LeetCode 1475. 商品折扣后的最终价格，推荐阅读WPS下载最新地址获取更多信息