Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 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

/
/
gm

Test String

Code Generator

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r#"(?m)(['""])((?:\\1|(?:(?!\1)).)*)(\1)|(?<OpenMatch>({))|(?<CloseMatch>(}))"#).unwrap(); let string = "if (!(new[] { \"Command\", \"Click\" }).Any(d => xmlAttribute.Name.Equals(d, StringComparison.CurrentCultureIgnoreCase))) continue; if (!baseChain.Name.Contains(':')) return chain; var checkAnyInherited = baseChain.Name.Split(':').Last().Split(',', ' ').Where(d => !string.IsNullOrEmpty(d)).Select(d => d.Trim()).ToList(); private static IEnumerable<StatementReferenceMaster> GetAllMethodsForClass(string className, int projectId) { using (ICodeVortoService codeVortoService = new CodeVortoService()) { object[] parametersExp = { new MySqlParameter(\"@delim\", MySqlDbType.VarChar) {Value = \",\"}, new MySqlParameter(\"@className\", MySqlDbType.VarChar) {Value = className}, new MySqlParameter(\"@prjId\", MySqlDbType.Int32) {Value = projectId} }; var callExtExpandedCode = codeVortoService.StatementReferenceMasterRepository .ExecuteStoreProcedure<StatementReferenceMaster>(\"SpGetAllMethodsForClass\", parametersExp) .ContinueWith(t => t.Result).Result; return callExtExpandedCode; } } @\"CREATE\\s+TABLE\" @\"\\`(.*?)\\`\\s+\\(\" @\"^\\`(.*?)\\`(.*)\" @\"^PRIMARY\\s+KEY\" @\"(.*)\\((.*)\\)\" \"\" \"\" \"\" \"(\" \"-\" \"DbScript\" @\"CREATE\\s+TABLE\\s+(\\[dbo\\].)?(\\[)?(\\`)?(?<TableName>[a-zA-Z0-9_$]+)(\\])?(\\`)?\" @\"^([\\s]+)?(\\[|\\`)?(?<FieldName>[a-zA-Z0-9_$]+)(\\]|\\`)?\" \"TableName\" @\"C:\\inetpub\\wwwroot\\flokapture\\ExtractedProjects\\LocationServicesSource\\Pods.Integration.Services.Location.Model\\LocationServiceModel.edmx\" @\"^<EntityContainer\\s+Name=\\\"\"([^\\\"\"]*)\\\"\"\" @\"^<EntityType\\s+Name=\\\"\"([^\\\"\"]*)\\\"\"\" @\"StoreEntitySet=\\\"\"([^\\\"\"]*)\\\"\"\" @\"^<Property\\s+\" @\"^<EntityType\\s+Name=\\\"\"([^\\\"\"]*)\\\"\"|^<Property\\s+|^</EntityType>\\s+\" \"<edmx:Mappings>\" \"</EntityType>\" \"Done\" \"SELECT * FROM EntityAttributes WHERE ProjectId = \" \" Group by EntityName;\" @\"(?<VariableName>[a-z_]+)\\s*=\\s*new\\s+[a-z.0-9]+?\" \"\\\\(\\\\)|[\\\\s]*[\\\\w]+\\\\s+(?<VariableName>[a-zA-Z0-9$_]+)[\\\\s]*=[\\\\s]*\" \".\" "; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Rust, please visit: https://docs.rs/regex/latest/regex/