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)(?<=SUBH2002078568)[\s\S]+?(?=SUBF2002078568)`) var str = `HMT940040324 SUBH2002078568 2002078568{1:F01BANK MBI}{2:I940MAP}{4: 2002078568:20:20210420182417 2002078568:25:2002078568 2002078568:28C:00075 2002078568:60F:D210420IDR0, 2002078568:62F:D210420IDR0, 2002078568-} SUBF2002078568 SUBH2003001298 2003001298{1:F01BANK MBI}{2:I940MAP}{4: 2003001298:20:20210420182417 2003001298:25:2003001298 2003001298:28C:00075 2003001298:60F:C210420IDR111520964,38 2003001298:62F:C210420IDR111520964,38 2003001298-} SUBF2003001298 SUBH2002078568 // *Added this account from the top* 2002078568{1:F01BANK MBI}{2:I940MAP}{4: 2002078568:20:20210420182417 2002078568:25:2002078568 2002078568:28C:00075 2002078568:60F:D210420IDR0, 2002078568:62F:D210420IDR0, 2002078568-} SUBF2002078568- // End FMT9400000004` 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/