String 要匹配的正则表达式模式。 options RegexOptions 枚举值的按位组合,这些枚举值指定用于匹配的选项。 matchTimeout TimeSpan 超时间隔;若要指示该方法不应超时,则为InfiniteMatchTimeout。 返回 MatchCollection 搜索操作找到的Match对象的集合。 如果未找到匹配项,则此方法将返回一个空集合对象。
groupdict() {'first_name': 'Malcolm', 'last_name': 'Reynolds'} Match.start([group])Match.end([group]) 返回group 匹配到的字串的开始和结束标号。group 默认为0(意思是整个匹配的子串)。如果 group 存在,但未产生匹配,就返回 -1 。对于一个匹配对象 m, 和一个未参与匹配的组 g ,组 g (等价...
Replace(String, String, Int32) 在指定的輸入字串中,以指定的取代字串取代符合正則表示式模式的指定最大字串數目。 Replace(String, MatchEvaluator) 在指定的輸入字串中,將符合指定正則表示式的所有字串取代為 MatchEvaluator 委派所傳回的字串。 Replace(String, String) 在指定的輸入字串中,以指定的取代...
3 or more of a a{3,} Between 3 and 6 of a a{3,6} Start of string ^ End of string $ A word boundary \b Non-word boundary \B Regular Expression No Match / insert your regular expression here / gm Test String insert your test string here ...
Regex.Match Method (String, String) Microsoft Silverlight will reach end of support after October 2021.Learn more. Searches the specified input string for the first occurrence of the regular expression supplied in the pattern parameter. Namespace:System.Text.RegularExpressions ...
{ "_id" : 2, "description" : "First lines\nsecond line", "returnObject" : { "match" : "s", "idx" : 12, "captures" : [ ] } } { "_id" : 3, "description" : "Many spaces before line", "returnObject" : null } { "_id" : 4, "description" : "Multiple\nline descripti...
string, it will not match anything. Because in the stringabc, the "b" is not the starting character. Let's take a look at another regular expression^(T|t)hewhich means: an uppercaseTor a lowercasetmust be the first character in the string, followed by a lowercaseh, followed by a ...
match("abc", "") == false match("abc", "abcd") == false match("abc", "abc") == true match("abc", "abc") == true match(string("abcd"), "abc") == false match(string("abc"), "abc") == true "abc" mark_count == 0 "(abc)" mark_count == 1 getloc == imbued =...
public static bool IsMatch(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 ...
A compiled representation of a regular expression. A regular expression, specified as a string, must first be compiled into an instance of this class. The resulting pattern can then be used to create a Matcher object that can match arbitrary java.lang.CharSequence character sequences against the...