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metacharacters

网络元字符；元字符集；正则表达式元字符集

metacharacters

metacharacters

metacharacters

元字符

元字符（Metacharacters）包括几种特殊的符号：搜索文字时，表达式(?i)Saint-(?-i)Petersburg得到的结果中，Saint可以有不同 …

元字符集

第二章 linux工具箱笔记 ... 正则表达式 regular expression 元字符集 metacharacters 模板 pattern ...

正则表达式元字符集

什么是正则表达式元字符集(metacharacters)：在一个规则表达式中所使用的特殊字符常常被称为元字符正则表达式在哪里有用？

转义字符

● 转义字符(metacharacters)指的是在Shell中有特殊含义的字符。　　例如：< > | ; ! ? * [ ] $ \ " ' ` ~ ( ) { } ^ $?:最近执行的命令...

1

A number of metacharacters require special treatment when trying to match them .

许多元字符要求在试图匹配它们时特别对待。

2

The metacharacters described in the following table do not cause the engine to advance through the string or consume characters .

下表中描述的元字符不会使引擎在字符串中前进或使用字符。

3

The word boundary metacharacters ensure that only whole words are detected .

字边界元字符确保只检测整个单词。

5

7

The set of metacharacters gives regular expressions their processing power .

元字符使正则表达式具有处理能力。

8

Explains the characters that comprise a regular expression, the characters that comprise metacharacters, and the behavior of metacharacters.

说明构成正则表达式的字符、构成元字符的字符以及元字符的行为。

9

Ordinary characters consist of all printable and non-printable characters that are not explicitly designated as metacharacters.

普通字符包括没有显式指定为元字符的所有可打印和不可打印字符。

11

Small expressions are combined by using a variety of metacharacters and operators to create larger expressions.

也就是，使用各种中继字元及运算子结合小型运算式来建立较大的运算式。

12

There are two types of characters that are used in regular expressions : metacharacters and normal characters .

正则表达式中使用以下两种类型的字符：元字符和常规字符。

14

The following table describes the metacharacters that affect matching .

下表描述了影响匹配的元字符。

15

Metacharacters are not active inside classes .

元字符在类别里并不起作用。

16

A string of characters with any metacharacters converted to their escaped form .

包含任何已转换为转义形式的元字符的字符串。

17

There are some metacharacters that we haven't covered yet. Most of them will be covered in this section.

还有一些我们还没展示的元字符，其中的大部分将在本节展示。

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You can override the capture by using the non-capturing metacharacters ? : ,

可以通过使用非捕获元字符？：、？

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