Regular Expressions 101

Save & Manage Regex

  • Current Version: 1
  • Save & Share
  • Community Library

Flavor

  • PCRE2 (PHP)
  • ECMAScript (JavaScript)
  • Python
  • Golang
  • Java
  • .NET 7.0 (C#)
  • Rust
  • PCRE (Legacy)
  • Regex Flavor Guide

Function

  • Match
  • Substitution
  • List
  • Unit Tests
Sponsors
There are currently no sponsors. Become a sponsor today!
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
Processing...

Test String

Code Generator

Language

Generated Code

// include the latest version of the regex crate in your Cargo.toml extern crate regex; use regex::Regex; fn main() { let regex = Regex::new(r"(?m)\\x02(01|02|04|06|07|08|09|10|11|12)\\x01").unwrap(); let string = " 9204112055711\\t김은선(39930(\\x010(\\x010\\x015\\x0227\\t620211367364620211358540 복사하여, 승인 처리 되었습니다.\\n 심사자 정밀심사로 재평가 됩니다.\\x0820210330\\x0820210330\\t507030360)(주)에이플러스에셋어드바이저\\x0210\\x010\\x0200\\x0710MS130\\x0bGA1-3지점\\x0820210331\\x12318000840202103308\\x0232\\x010\\x0820210330\\n HAN WENSHU(36920(\\x010(\\x010\\x015\\t507030360)(주)에이플러스에셋어드바이저\\x0210\\x010\\x0200\\x0710MS140\\x0bGA1-4지점\\x0820210331\\x133170009442021033037\\x0231\\x010\\x0820210330\\n \\x02(01|02|04|06|07|08|09|10|11|12)\\x01 \\x10\\x13]\\x02\\tErrorCode\\x03\\x08ErrorMsg<0|^|20210331norOnPwas2081811366173150001|^|FNGCTGC3701|^||^|\\x01\\x13\\x02header\\x10\\x13\\x02\"\\x0bparentIndex\\x02\\x01\\x08rowIndex\\x02\\x01\\n"; // result will be an iterator over tuples containing the start and end indices for each match in the string let result = regex.captures_iter(string); for mat in result { println!("{:?}", mat); } }

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 Rust, please visit: https://docs.rs/regex/latest/regex/