This regex will match a string that starts and ends with the same letter (as the post title suggests), but unlike the selected answer, it does not limit the string to contain only characters x and y. It will match any strings, starting and ending with the same letters (the ...
The^is a start-of-string anchor in your regex, and it causes the regex to fail the match with your input string. Also, since there must be digits after optional whitespace (\s*), I suggest applying+(1 or more occurrences) quantifier with\d. If your string may start w...
'Declaration Public Function Matches ( _ input As String _ ) As MatchCollection Parameters input Type: System.String The string to search for a match. Return Value Type: System.Text.RegularExpressions.MatchCollection A collection of the Match objects found by the search. If no matche...
Regex.Match Method (String, String, RegexOptions) Learn 登录 消除警报 我们将不再定期更新此内容。 请查看Microsoft 产品生命周期,了解此产品、服务、技术或 API 的受支持情况。 返回到主站点 Regex Methods Escape Method GetGroupNames Method GetGroupNumbers Method...
以下是正则表达式格式的简要说明。更详细的信息和演示,参考正则表达式HOWTO。 正则表达式可以包含普通或者特殊字符。绝大部分普通字符,比如'A','a', 或者'0',都是最简单的正则表达式。它们就匹配自身。你可以拼接普通字符,所以last匹配字符串'last'. (在这一节的其他部分,我们将用thisspecialstyle这种方式表示正则表...
public static Match Match ( string input, string pattern ) Parameters input The string to search for a match. pattern The regular expression pattern to match. Return Value An object that contains information about the match. Version Information Available in the .NET Micro Framework version 4.2....
IsMatch(String, String, RegexOptions) 指示指定的正则表达式是否使用指定的匹配选项在指定的输入字符串中找到匹配项。 IsMatch(ReadOnlySpan<Char>, String, RegexOptions) 指示指定的正则表达式是否使用指定的匹配选项在指定的输入范围中找到匹配项。 IsMatch(String, String) ...
match(pattern, string, flags=0) Try to apply the pattern at the start of the string, returning a match object, or None if no match was found. search(pattern, string, flags=0) Scan through string looking for a match to the pattern, returning ...
re.match(pattern, string, flags=0) 如果string 开始的0或者多个字符匹配到了正则表达式样式,就返回一个相应的 匹配对象。 如果没有匹配,就返回 None ;注意它跟零长度匹配是不同的。 注意即便是 MULTILINE 多行模式, re.match() 也只匹配字符串的开始位置,而不匹配每行开始。 如果你想定位 string 的任何...
MatchCollection Matches (string input, string pattern, System.Text.RegularExpressions.RegexOptions options, TimeSpan matchTimeout); Parameters input String The string to search for a match. pattern String The regular expression pattern to match. options RegexOptions A bitwise combination of the ...