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

package main import ( "regexp" "fmt" ) func main() { var re = regexp.MustCompile(`(?m)^[^|]*(?:\|[^|]*){58}$`) var str = `10001|W20101|W20101|G00001||||學徒劍盾|8|9|768||-1|1||||||||40002||||||1|14||2||40027|40028|40029|40030||2|22|113|||||||||||2|50|100|7||||| 10002|W30101|W30101|G00001||||學徒大斧|9|9|768||-1|1||||||||40003||||||1|17||3||40031|40032|40033|40034||2|26|142|||||||||||2|50|100|9||||| 10479|I00208||G00005||||青鐵礦|29||0||-1|30||||3|||||||||100|5|1||54|$53$原始的礦石，整體泛著鐵青的色澤。 #IMG$NoticeIcon#30~45級的副本掉落或跟公會商人購買。 $7$能與其他材料結合，製作40級的合金材料。 |||||||||||||||||||||||||||` 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/