To match any character, use the dot"."pattern. To match a single character (or multiple characters) zero or more times, use".*"pattern. To match multiple characters or a given set of characters, use the character classes. 1. Match Any Character By default, the'.'dot character in a re...
Match a single alphabetic character (a through z or A through Z) or numeric character. \d{2} Match two numeric characters. [a-zA-Z0-9] Match a single alphabetic character (a through z or A through Z) or numeric character. - Match a hyphen. \d{3} Match exactly three numeric charact...
+ Environment.MachineName + Match the string that is returned by the Environment.MachineName property. (?:\.\w+)* Match the period (.) character followed by one or more word characters. This match can occur zero or more times. The matched subexpression is not captured. \\ Match a backsl...
Begin the match at a word boundary. \w+ Match one or more word characters. es Match the literal string "es". \b End the match at a word boundary. Version Information Silverlight Supported in: 5, 4, 3 Silverlight for Windows Phone ...
(-\d{3}){2}Find a hyphen followed by three numeric characters, and match two occurrences of this pattern. [A-Z0-9]Match any single alphabetic character fromAthroughZ, or any numeric character. $End the match at the end of the string. ...
Begin the match at a word boundary. \w+ Match one or more word characters. es Match the literal string "es". \b End the match at a word boundary. Version Information Silverlight Supported in: 5, 4, 3 Silverlight for Windows Phone ...
In regular expressions, braces (also called quantifiers) are used to specify the number of times that a character or a group of characters can be repeated. For example, the regular expression [0-9]{2,3} means: Match at least 2 digits, but not more than 3, ranging from 0 to 9. "[...
The "Test(char_data)" function scans the input data for the specified pattern. If a match is found, it returns TRUE and proceeds to execute the subsequent line, which utilizes the REPLACE function to replace the initial 4 characters with blanks. ...
{$regexMatch:{input:"$description",regex:"m.*line",options:"s"} } The following example includes thesoption to allow the dot character (i.e. .) to match all characters including new line as well as theioption to perform a case-insensitive match: ...
2.常用re function: re.compile(pattern, flags)编译正则表达式,保存以便后用,避免重复编写 re.match(pattern, string , flags)从字符串的开始匹配,返回一个匹配的对象,失败返回None,常用于整句匹配(从头匹配) re.search(pattern, string, flags)扫描整个字符串,直到找到第一个匹配的对象(查找) ...