我们的示例显示了GCC如何分配寄存器，以及它如何更新输出变量的值。

Our example shows how GCC allocates registers, and how it updates the value of output variables.

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现在我们有一个带有定制字段的文档条目，接下来要更新它的字段。

Here we get an existing document's entry with custom fields and then update the fields.

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当我们得到了回报后，它的价值被迅速更新。

After we receive the reward, the value is quickly updated.

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And we won't wait here one hundred seconds for it to finish, but we're using the loop, we're updating a variable, and we're formatting it in a nice way.

我们将不会再这里等待100秒来等它完成,但是我们使用循环，我们更新一个变量，我们把它排成一个漂亮的格式。

哈佛公开课 - 计算机科学课程节选

A progress bar is not supposed to print one hundred lines just to update its status; generally we like to see a little animation.

一个进度条不应该是打印100行,只是更新它的状态，一般地，我们,想看到一点生机。

哈佛公开课 - 计算机科学课程节选