清单 3 中的示例显示可以如何将此操作符与 ! $ 运算符组合使用。
The example in Listing 3 shows how you can use this operator in combination with the !$ operator.
比尔善于编程的其中一个原因就是它蕴含的运算性与逻辑性。
One of the reasons Bill was so good at programming is because it is mathematical and logical.
与大多数现代编程语言一样,需要使用AND和OR语句对表达式或它们的值进行条件运算。
Like in most modern programming languages, the and and or statements are necessary for definitive conditional evaluations of expressions or their values.
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