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 = #"\\"(title|url)\\": \\"[^"]*\\""# let regex = try! NSRegularExpression(pattern: pattern, options: .anchorsMatchLines) let testString = #""" 1. Есть строки в текстовом файле: "title": "разный текст" Найти всё в этом файле. 2. Есть строки в текстовом файле: "url": "разный текст" Найти всё в этом файле. 3. Есть всё в общей строке в текстовом файле: "title": "разный текст", "url": "разный текст" [{"hostName": "youtube", "name": "Rock & Roll 50's Mix", "type": "VIDEO", "iconimage": "https://i.ytimg.com/vi/gLzn8nDVSo8/hq720.jpg?sqp=-...", "resolver": "youtube", "data": "{\"category\": \"video\", \"name\": \"category\", \"title\": \"Rock & Roll 50's Mix\", \"url\": \"http://www.youtube.com/watch?v=gLzn8nDVSo8\", \"time\": \"9 \\u043b\\u0435\\u0442 \\u043d\\u0430\\u0437\\u0430\\u0434\", \"desc\": \"Duration: 11:38 | 71\\u00a0528\\u00a0835 \\u043f\\u0440\\u043e\\u0441\\u043c\\u043e\\u0442\\u0440\\u043e\\u0432 | 9 \\u043b\\u0435\\u0442 \\u043d\\u0430\\u0437\\u0430\\u0434\\ndjdirtybeat\\nPLEASE LIKE MY FACEBOOK PAGE, Download Here https://soundcloud.com/mauricio-villegas-12\\u00a0...\", \"type\": \"video\", \"icon\": \"https://i.ytimg.com/vi/gLzn8nDVSo8/hq720.jpg?sqp=-..."}", "description": "Duration: 11:38 | 71\u00a0528\u00a0835 \u043f\u0440\u043e\u0441\u043c\u043e\u0442\u0440\u043e\u0432 | 9 \u043b\u0435\u0442 \u043d\u0430\u0437\u0430\u0434\ndjdirtybeat\nPLEASE LIKE MY FACEBOOK PAGE, Download Here https://soundcloud.com/mauricio-villegas-12\u00a0..."}, {"hostName": "youtube", "name": "Free - All Right Now", "type": "VIDEO", "iconimage": "https://i.ytimg.com/vi/YExuLkIaQ7U/hq720.jpg?sqp=-...", "resolver": "youtube", "data": "{\"category\": \"video\", \"name\": \"category\", \"title\": \"Free - All Right Now\", \"url\": \"http://www.youtube.com/watch?v=YExuLkIaQ7U\", \"time\": \"11 """# 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