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
No Match

/
/
gm

Test String

Code Generator

Language

Generated Code

import Foundation let pattern = #"((\[Map\()|(,\s+))(?<id>\w*-\w*-\w*-\w*-\w*)\s+-\>\s+(?<status>[^,]*)"# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #"2023-03-03T08:19:31,693 [INFO] [prod] [2f78061f-5f51-4636-8da1-3c9644b9e7a1] [34d3d64e-01c8-428e-a7b1-8b414dbd5478] [agent-AgentDataSourceStateManagerActor] - All collector health status has been updated- stateMap: [Map(d55c495c-52da-4e57-bc83-2ee02e92d978 -> running, 8194d562-beb4-4a44-a7f3-ec92ed549b3c -> running, e6f1b795-bf44-4640-880f-8b32f69586b7 -> running, 08ff35ad-f7b8-4ef2-bf29-1ccf5e50caad -> running, 4925c2fc-7f47-46e5-9a78-63e596bb469a -> running, d1c35370-1522-498c-8a79-ab07909a1c4a -> running, 8e7f28fa-26e9-445a-a5b3-50e5746ca8ca -> running, db52b5b0-31b2-43dc-8887-9f2859762a62 -> running)], statusMap: [Map(d55c495c-52da-4e57-bc83-2ee02e92d978 -> Collector is running., 8194d562-beb4-4a44-a7f3-ec92ed549b3c -> Collector is running., e6f1b795-bf44-4640-880f-8b32f69586b7 -> Collector is running., 08ff35ad-f7b8-4ef2-bf29-1ccf5e50caad -> Collector is running., 4925c2fc-7f47-46e5-9a78-63e596bb469a -> Collector is running., d1c35370-1522-498c-8a79-ab07909a1c4a -> Collector is running., 8e7f28fa-26e9-445a-a5b3-50e5746ca8ca -> Collector is running., db52b5b0-31b2-43dc-8887-9f2859762a62 -> Collector is running.)]"# let stringRange = NSRange(location: 0, length: testString.utf16.count) let matches = regex.matches(in: testString, range: stringRange) var result: [[String]] = [] for match in matches { var groups: [String] = [] for rangeIndex in 1 ..< match.numberOfRanges { let nsRange = match.range(at: rangeIndex) guard !NSEqualRanges(nsRange, NSMakeRange(NSNotFound, 0)) else { continue } let string = (testString as NSString).substring(with: nsRange) groups.append(string) } if !groups.isEmpty { result.append(groups) } } print(result)

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 Swift 5.2, please visit: https://developer.apple.com/documentation/foundation/nsregularexpression