目录前言观点与案例结合（20%）1. 分块写入：降低内存压力2. 压缩存储：减小文件体积3. 并行列队：加速处理4. 格式优化：提升用户体验社会现象分析总结与升华前言
When I have to write methods which return two values, I usually go about it as in the following code which returns a List<string>. Or if I have to return e.g. a id and string, then I return a Li
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