The outer loop decrements a loop counter variable each time through the loop.

每循环一次，外部循环都使循环计数器变量递减一次。

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More importantly, -O3 also avoids keeping the loop counter in memory, even with the original source.

更重要的是， -O3 也避免了在内存中保留循环计数器，即使使用原始源。

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Normally, variables are best named by their use (like firstName or title), but as this variable is essentially a loop counter, using single letters is also fine.

变量一般最好根据用途命名（如 firstName 或r title），不过由于这个变量基本上是一个循环计数器，也可使用单个字母。

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Staffers and contributors literally stop publishing if there is a technical glitch with the page-view counter they now value it as a vital feedback loop.

FORBES: Long-Form Journalism, Part II: The Challenge for Reporters, and What Forbes Is Doing About It