测试程序重复调用每种方法，使用一个大循环数，从而平均多次调用的时间衡量结果。
The test program calls each method repeatedly with a large loop count, averaging the time measurements over several calls.
如果没有统一的策略，开发人员就要为每个网络应用程序重复实现定制的安全机制。
Without a unified strategy, developers re-implement custom security for each network application.
同样地，我的一个用于将数据转换为列的灵活的程序重复了一个现有实用程序rs的功能，这个实用程序同样可以在BSD系统上找到，只不过rs更灵活，设计得更好。
Likewise, my very clever program for turning data into columns duplicates an existing utility, rs, likewise found on BSD systems except that rs is much more flexible and better designed.
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