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

/
/
gmu

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?m)^"([\w\s()]+)<.*?(\w+)\s+(\[\w+\]\s+\(\w+\)).*$`) var str = `"КРОВАТЬ<img src=""bed.png"" />" BED [bed] (бэд)[sound:43.mp3] "ДОМ (место жилья)<img src=""home4.png"" />" HOME [həʊm] (хоум)[sound:23.mp3] "ЗУБ<img src=""tooth2.png"" />" TOOTH [tuθ] (туθ)[sound:30.mp3] "ЗУБЫ<img src=""teeth.png"" />" TEETH [tiːθ] (тииθ)[sound:31.mp3] "ИГРА<img src=""game.jpg"" />" GAME [geɪm] (гейм)[sound:32.mp3] "ЖУРНАЛ<img src=""magazine.jpg"" />" MAGAZINE [ˌmægəˈziːn] (мæгэзиин)[sound:28.mp3] "ЖИЗНЬ<img src=""life.jpg"" />" LIFE [laɪf] (лайф)[sound:27.mp3] "ЖЕНЩИНА<img src=""woman (1).jpg"" />" WOMAN [ˈwʊmən] (wумэн)[sound:25.mp3] "ЖЕНЩИНЫ<img src=""women2 (1).jpg"" />" WOMEN [ˈwɪmɪn] (wимин)[sound:26.mp3] "ЕДА<img src=""food.jpg"" />" FOOD [fuːd] (фууд)[sound:24.mp3]` var substitution = "\L"\2";"\3";"\1"" fmt.Println(re.ReplaceAllString(str, substitution)) }

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 Golang, please visit: https://golang.org/pkg/regexp/