Ruby正则表达式方法！〜 [英] Ruby regular expression method !~

问题描述

我不记得在哪里学习了String类的!~方法.但是我知道它会将字符串与正则表达式进行比较，并检查字符串是否与正则表达式不匹配.参见下面的示例.

I don't remember where I learned the !~ method of the String class. However I know it compares a string to a regex and check whether the string not match the regex. See my below example.

C:\>irb
irb(main):001:0> "abba" =~ /(\w)(\w)\2\1/i
=> 0
irb(main):002:0> "xxxx" =~ /(\w)(\w)\2\1/i
=> 0
irb(main):003:0> "asdf" =~ /(\w)(\w)\2\1/i
=> nil
irb(main):004:0> "asdf" !~ /(\w)(\w)\2\1/i
=> true
irb(main):005:0> "asdf" !~ /asdf/i
=> false
irb(main):006:0>

我想找到该方法的更多信息，但在String和Regexp的rdoc中都找不到.任何人都可以提供帮助吗?

I want to find more information of the method but I can't find it in the rdoc of both String and Regexp. Anyone can give some help?

谢谢.

推荐答案

由于这是您可以找到的方法此处. 我找到了此描述.

Since this is the method you can find it here in the Methods filter. I've found this description.

obj！〜其他→true或false

如果两个对象不匹配(使用=〜方法)，则返回true，否则返回false.

Returns true if two objects do not match (using the =~ method), otherwise false.

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