Let's look at another example of why we might use the not operator.

现在通过另一个示例了解为什么可能要使用NOT操作符。

youdao

You can use wildcards, along with the not operator,!, allowing for complex selection criteria.

可以使用通配符和取反操作符！

youdao

The next statement in the loop body is a second if statement that tests whether the variable I is evenly divisible by 125, but this expression is preceded by the not operator.

循环体中的下一个语句是第二个if语句，它测试变量i是否能被125整除，但是该表达式前面加了一个not运算符。

youdao

And one of the things neophytes trip over early on is that we'll soon see there's not only an equal sign operator, there's equals equals.

这样我们还要引入了一个新的操作符,我们将看到这里不仅有一个等号的操作，还有双等号。

哈佛公开课 - 计算机科学课程节选

bug Now, this was not the bug in this program because I did, in fact, use the equality operator and so it feels like if I type the word foo both times I should, in fact, get back you type the same thing.

现在，在这个程序中这个不是，因为，实际上，我使用了等于号,如果我输入单词foo两次，我返回给你“输入了相同的东西“

哈佛公开课 - 计算机科学课程节选

The real cause was not operator- or even industry-related.

ECONOMIST: Free to disagree

In other words, the message which has got through to the frontlines is - if it does not work, blame the operator not the device.

BBC: Export ban for useless 'bomb detector'

First of all, McMoRan (with a 36% working interest) is not the operator on the well, Chevron (50%) is.

FORBES: Chevron Makes Big Discovery In Louisiana - And It's Not Even Done Drilling Yet