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, special_regex)) { std::cout << "Special Characters ...
insensitive. Case insensitive match (ignores case of [a-zA-Z]) Case-insensitive matching can also be enabled via the embedded flag expression(?i) Java "/The/gi"或"/(?i)The/g"=> The fat cat sat on the mat."The"=> The fat cat sat on the mat. ...
构造函数中还有一个默认参数flags,默认值为std::regex::ECMAScript,该参数可以用来设置正则表达式所采用的语法(有且只能设置一种),如std::regex::grep, std::regex::awk等,也可以设置 case insensitive,flags 的多个值用比特位 OR 操作|连接,如: 2.2match_results、sub_match及其实例化类型 match_results是一种...
來源: Regex.Match.cs 使用指定的比對選項在指定的輸入字串中,搜尋所指定規則運算式的所有相符項目。 C# 複製 public static System.Text.RegularExpressions.MatchCollection Matches (string input, string pattern, System.Text.RegularExpressions.RegexOptions options); 參數 input String 用來搜尋比對的字串。 patte...
For a case-insensitive match, use the Regex.Regex(String, RegexOptions) constructor. Notes to Callers This constructor creates a Regex object that uses the default time-out value of the application domain in which it is created. If a time-out value has not been defined for the application ...
using System; using System.Reflection; using System.Text.RegularExpressions; public class Example { public static void Main() { // Match two or more occurrences of the same character. string pattern = @"(\w)\1+"; // Use case-insensitive matching. var rci = new RegexCompilationInfo...
i Case-insensitive: letters match both upper and lower case. m Multi-line mode: ^ and $ match begin/end of line. s Allow dot (.). to match \n. R Enables CRLF mode: when multi-line mode is enabled, \r\n is used. U Swap the meaning of x* and x*?. u Unicode support (enabl...
But if we apply the regular expression ^b to the above string, it will not match anything. Because in the string abc, the "b" is not the starting character. Let's take a look at another regular expression ^(T|t)he which means: an uppercase T or a lowercase t must be the first...
public static Pattern compile(String regex, int flags) 1. regex - 要编译的表达式。 flags - 匹配标志,它是一个位掩码,可能包括CASE_INSENSITIVE,MULTILINE,DOTALL,UNICODE_CASE,CANON_EQ,UNIX_LINES,LITERAL,UNICODE_CHARACTER_CLASS和COMMENTS。 static Pattern compile - 异常 ...
sub_match class <scoped_allocator> <set> <shared_mutex> <sstream> <stack> <stdexcept> <streambuf> <string> <string_view> <strstream> <system_error> <thread> <tuple> <type_traits> <typeindex> <typeinfo> <unordered_map> <unordered...