📅 最后修改于: 2020-12-15 04:26:17 🧑 作者: Mango
这是一种表示要与字符序列匹配的模式的标准化方法。一些典型的正则表达式参数如下所示-
目标序列(对象) -用于搜索序列模式。
正则表达式(模式) -用于在目标序列中搜索。
件阵列-比赛的信息被存储在特殊数组的match_results类型(如C匹配或SMATCH)中的一个。
替换字符串-此操作替换匹配项。
| Sr.No. | Regex operation & description |
|---|---|
| 1 | regex_match
It is a match sequence. |
| 2 | regex_search
It is a search sequence. |
| 3 | regex_replace
It is a replace matched sequence. |
| Sr.No. | Iterator type & description |
|---|---|
| 1 | regex_iterator
It is a regex iterator. |
| 2 | regex_token_iterator
It is a regex token iterator. |
| Sr.No. | Instantiation & description |
|---|---|
| 1 | regex
It is a regex class. |
| 2 | wregex
It is a wregex class. |
| Sr.No. | match_results instantiation & description |
|---|---|
| 1 | cmatch
These are match_results for string literals. |
| 2 | wcmatch
These are match_results for wide string literals. |
| 3 | smatch
These are match_results for string objects. |
| 4 | wsmatch
These are match_results for wide string objects. |
| Sr.No. | sub_match instantiation & description |
|---|---|
| 1 | csub_match
It is a sub_match for string literals. |
| 2 | wcsub_match
It is a sub_match for wide string literals. |
| 3 | ssub_match
It is a sub_match for strings. |
| 4 | wssub_match
It is a sub_match for wide strings. |
| Sr.No. | Namespace & description |
|---|---|
| 1 | regex_constants
It is a regex constants. |