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

r"
"
gm

Test String

Code Generator

Language

Generated Code

re = /(\d+)\.(.+?)\s+(?=\d).+?(\d+)(?=$|\s+(?:\[|[A-Z]))/m str = '1.FC Barcelona 38 28 9 1 99-29 93 Champions 2.Atlético de Madrid 38 23 10 5 58-22 79 3.Real Madrid CF 38 22 10 6 94-44 76 [C] 4.Valencia CF 38 22 7 9 65-38 73 5.Villarreal CF 38 18 7 13 57-50 61 6.Real Betis Balompié (Sevilla) 38 18 6 14 60-61 60 7.Sevilla FC 38 17 7 14 49-58 58 8.Getafe CF 38 15 10 13 42-33 55 [P] 9.SD Eibar 38 14 9 15 44-50 51 [2 2 0 0 8-2 6] 10.Girona FC 38 14 9 15 50-59 51 [P] [2 0 0 2 2-8 0] 11.RCD Espanyol (Barcelona) 38 12 13 13 36-42 49 [4 2 2 0 7-5 8] 12.Real Sociedad (San Sebastián) 38 14 7 17 66-59 49 [4 1 1 2 6-7 4] 13.RC Celta (Vigo) 38 13 10 15 59-60 49 [4 1 1 2 7-8 3] 14.Deportivo Alavés (Vitoria) 38 15 2 21 40-50 47 15.Levante UD (Valencia) 38 11 13 14 44-58 46 [P] 16.Athletic de Bilbao 38 10 13 15 41-49 43 [2 1 0 1 2-1 3] 17.CD Leganés 38 12 7 19 34-51 43 [2 1 0 1 1-2 3]** --------------------------------------------------------** 18.RC Deportivo (La Coruña) 38 6 11 21 38-76 29 Relegated 19.UD Las Palmas 38 5 7 26 24-74 22 Relegated 20.Málaga CF 38 5 5 28 24-61 20 Relegated' # Print the match result str.scan(re) do |match| puts match.to_s end

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 Ruby, please visit: http://ruby-doc.org/core-2.2.0/Regexp.html