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)\"ruleGroupId\":\s*\"(?<ruleGroupId>[^\"]+)\",[\r\n](.+[\r\n]){2}(\"excludedRules\"\:\s\[)([\r\n].+)[\r\n]\"exclusionType\"\:\s*\"(?<exclusionTpe>[^\"]+)"#).unwrap(); let string = "{ \"timestamp\": 1646229254523, \"formatVersion\": 1, \"webaclId\": \"arn:aws:wafv2:us-east-1:111111:regional/webacl/alb-stage-web-acl/26ac170c-03c4-4fd7-8fab-86e346789fef\", \"terminatingRuleId\": \"Default_Action\", \"terminatingRuleType\": \"REGULAR\", \"action\": \"ALLOW\", \"terminatingRuleMatchDetails\": [], \"httpSourceName\": \"ALB\", \"httpSourceId\": \"182116744736-app/ALB-Stage/fcc1f5f9483b035e\", \"ruleGroupList\": [ { \"ruleGroupId\": \"AWS#AWSManagedRulesAmazonIpReputationList\", \"terminatingRule\": null, \"nonTerminatingMatchingRules\": [], \"excludedRules\": null }, { \"ruleGroupId\": \"AWS#AWSManagedRulesBotControlRuleSet\", \"terminatingRule\": null, \"nonTerminatingMatchingRules\": [], \"excludedRules\": null }, { \"ruleGroupId\": \"AWS#AWSManagedRulesCommonRuleSet\", \"terminatingRule\": null, \"nonTerminatingMatchingRules\": [], \"excludedRules\": [ { \"exclusionType\": \"EXCLUDED_AS_COUNT\", \"ruleId\": \"SizeRestrictions_BODY\" } ] }, { \"ruleGroupId\": \"AWS#AWSManagedRulesKnownBadInputsRuleSet\", \"terminatingRule\": null, \"nonTerminatingMatchingRules\": [], \"excludedRules\": null } ], \"rateBasedRuleList\": [], \"nonTerminatingMatchingRules\": [], \"requestHeadersInserted\": null, \"responseCodeSent\": null, \"httpRequest\": { \"clientIp\": \"67.218.14.10\", \"country\": \"US\", \"headers\": [ { \"name\": \"host\", \"value\": \"sample.com\" }, { \"name\": \"content-length\", \"value\": \"50362\" }, { \"name\": \"cache-control\", \"value\": \"max-age=0\" }, { \"name\": \"sec-ch-ua\", \"value\": \"\\\" Not A;Brand\\\";v=\\\"99\\\", \\\"Chromium\\\";v=\\\"98\\\", \\\"Microsoft Edge\\\";v=\\\"98\\\"\" }, { \"name\": \"sec-ch-ua-mobile\", \"value\": \"?0\" }, { \"name\": \"sec-ch-ua-platform\", \"value\": \"\\\"Windows\\\"\" }, { \"name\": \"origin\", \"value\": \"https://sample.com\" }, { \"name\": \"upgrade-insecure-requests\", \"value\": \"1\" }, { \"name\": \"dnt\", \"value\": \"1\" }, { \"name\": \"content-type\", \"value\": \"multipart/form-data; boundary=----WebKitFormBoundaryuXOFvh7iQjJkEJHm\" }, { \"name\": \"user-agent\", \"value\": \"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/98.0.4758.102 Safari/537.36 Edg/98.0.1108.62\" }, { \"name\": \"accept\", \"value\": \"text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9\" }, { \"name\": \"sec-fetch-site\", \"value\": \"same-origin\" }, { \"name\": \"sec-fetch-mode\", \"value\": \"navigate\" }, { \"name\": \"sec-fetch-user\", \"value\": \"?1\" }, { \"name\": \"sec-fetch-dest\", \"value\": \"document\" }, { \"name\": \"referer\", \"value\": \"https://sample.com/DischargeDetail.aspx\" }, { \"name\": \"accept-encoding\", \"value\": \"gzip, deflate, br\" }, { \"name\": \"accept-language\", \"value\": \"en-US,en;q=0.9\" }, { \"name\": \"cookie\", \"value\": \"_ga=GA1.3.84334902.1642521795; __RequestVerificationToken=-8kinKddCjKCZTws-wPmXDZTFg39urggswPnYm5Y15UwfIjspHqTj1hOPAXIaRPHL2cupyt2vO4Gb5QUExZGd6e5djS0v81kxt2pH22Ow9XiJYr2NPWB_BdQb-VmCUHVXbiVZZ5NwTfGDrXd2O0uD_gba4fM3PhkQUO5f9zs5381; _gid=GA1.2.249665053.1645964709; _ga_33R15ZN4N1=GS1.1.1645965393.6.0.1645965397.56; _ga=GA1.2.84334902.1642521795; ASP.NET_SessionId=1fnikipv2poi14r3doy4kb2w\" } ], \"uri\": \"/ReleaseRequest.aspx\", \"args\": \"\", \"httpVersion\": \"HTTP/2.0\", \"httpMethod\": \"POST\", \"requestId\": \"1-621f7706-5e8f4ea33e2dc0cc66b98797\" } }"; // 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/