if (std::regex_search(text, match, hello_regex_icase)) { std::cout << "Case-insensitive Matched: " << match.str() << std::endl; } // 示例3: 特殊字符的转义 std::string special_chars = ".*+?"; std::regex special_regex("\.*\+\?"); if (std::regex_search(special_chars,...
match,hello_regex)){std::cout<<"Matched: "<<match.str()<<std::endl;}// 示例2: 不区分大小写的匹配std::regexhello_regex_icase("hello",std::regex_constants::icase);if(std::regex_search(text,match,hello_regex_icase)){std::cout<<"Case-insensitive Matched: "<<match...
Source: Regex.Match.cs 使用指定的匹配选项在指定的输入字符串中搜索指定的正则表达式的所有匹配项。 C# 复制 public static System.Text.RegularExpressions.MatchCollection Matches (string input, string pattern, System.Text.RegularExpressions.RegexOptions options); 参数 input String 要搜索匹配项的字符串。 pa...
pattern String 要比對的規則運算式模式。 options RegexOptions 列舉值的位元組合,這些值會指定用於比對的選項。 matchTimeout TimeSpan 逾時間隔,若要表示此方法不應逾時則為 InfiniteMatchTimeout。 傳回 MatchCollection 搜尋之後找到的 Match 物件集合。 如果找不到相符的項目,此方法會傳回空集合物件。 例...
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 ...
To usePCRE-supported features in a regular expression that aren't supported in JavaScript, you must use the$regexoperator and specify the regular expression as a string. To match case-insensitive strings: "(?i)"begins a case-insensitive match. ...
//Matcher//return true if, and only if, the entire region sequence matches this matcher's patternpublicbooleanmatches(){returnmatch(from, ENDANCHOR);} 由此可见,String#matches方法的功能是:判断当前String是否完全匹配指定的正则表达式(而不是判断是否包含匹配指定正则表达式的字串)。其和直接调用Pattern#matc...
~* '^a': The ~* operator performs a case-insensitive match for names starting with "a". ^a: The caret ^ denotes the start of the string. Example 3: Regex to Exclude Patterns In this case, we select records where the username column does not contain any digits. ...
官网地址:https://docs.mongodb.com/manual/reference/operator/query/regex/#regex-case-insensitive 举个例子来说:现在有以下集合(官网的例子): { "_id" : 100, "sku" : "abc123", "description" : "Single line description." } { "_id" : 101, "sku" : "abc789", "description" : "First li...
Matching case-insensitive may impose a slight performance penalty. Require whole string to match If enabled, the provided pattern must match the whole string in order to return any results. Otherwise, the first match in the input string is used. ...