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Detailed match information will be displayed here automatically.
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  • 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
Processing...

Test String

Code Generator

Language

Generated Code

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?m)[\x{3040}-\x{30ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}\x{ff66}-\x{ff9f}\x{3040}-\x{30ff}\x{3400}-\x{4dbf}\x{4e00}-\x{9fff}\x{f900}-\x{faff}\x{ff66}-\x{ff9f}\x{3131}-\x{D79D}]`) var str = `2009年，波音公司(Boeing)在查尔斯顿附近的新厂破土动工时，曾宣扬这里是最先进的制造中心" "，将制造一款世界上最先进的飞机。但在接下来的十年里，这家生产787梦想客机的工厂一直受到做" "工粗糙和监管不力的困扰，危及航空安全。 (電腦用中文字型與字碼對照表, 技術通報C-26 "MojiJoho-Kiban Project" (文字情報基盤整備事業) General Chinese Standard Dictionary (通用规范汉字字典) Macao Information System Character Set (澳門資訊系統字集) 化學命名原則(第四版) (Chemical Nomenclature: 4th Edition) Hanyo-Denshi Program (汎用電子情報交換環境整備プログラム) Unifiable variants and exact duplicates in Extension B Also in CJK Unified Ideographs Extension B, hundreds of glyph variants were encoded.[13] In addition to the deliberate encoding of close glyph variants, six exact duplicates (where the same character has inadvertently been encoded twice) and two semi-duplicates (where the CJK-B character represents a de facto disunification of two glyph forms unified in the corresponding BMP character) were encoded by mistake:[14] U+34A8 㒨 = U+20457 𠑗 : U+20457 is the same as the China-source glyph for U+34A8, but it is significantly different from the Taiwan-source glyph for U+34A8 U+3DB7 㶷 = U+2420E 𤈎 : same glyph shapes U+8641 虁 = U+27144 𧅄 : U+27144 is the same as the Korean-source glyph for U+8641, but it is significantly different from the Chinese Mainland-, Taiwan- and Japan-source glyphs for U+8641 U+204F2 𠓲 = U+23515 𣔕 : same glyph shapes, but ordered under different radicals U+249BC 𤦼 = U+249E9 𤧩 : same glyph shapes U+24BD2 𤯒 = U+2A415 𪐕 : same glyph shapes, but ordered under different radicals U+26842 𦡂 = U+26866 𦡦 : same glyph shapes U+FA23 﨣 = U+27EAF 𧺯 : same glyph shapes (U+FA23 﨣 is a unified CJK ideograph, despite its name "CJK COMPATIBILITY IDEOGRAPH-FA23.")` for i, match := range re.FindAllString(str, -1) { fmt.Println(match, "found at index", i) } }

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/