字符匹配语法:
字符语法 | 语法解释 | 语法例子 |
---|---|---|
\d | 匹配数字(0~9) | ‘\d'匹配8,不匹配12; |
\D | 匹配非数字 | ‘\D’匹配c,不匹配3; |
\w | 匹配任意单字符 | ‘\w\w’ 匹配A3,不匹配@3; |
\W | 匹配非单字符 | ‘\W’匹配@,不匹配c; |
\s | 匹配空白字符 | ‘\d\s\d’匹配3 d,不匹配abc; |
\S | 匹配非空字符 | ‘\S\S\S’匹配A#4,不匹配3 d; |
. | 匹配任意字符 | ‘....’匹配A$ 5,不匹配换行; |
[…] | 匹配括号中任意字符 | [b-d]匹配b、c、d, 不匹配e; |
[^…] | 匹配非括号字符 | [^b-z]匹配a,不匹配b-z的字符; |