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

/
/
gm

Test String

Code Generator

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)^((?: )*).+(?:\n\1((?: )+).*)(?:\n\1(?:(?: )+).*)*").unwrap(); let string = " i need help for i in range(math.ceil(30/len(word)), 0, -1): if len(tried) > 0: print(\"so far you have tried \", \", \".join(tried)) print(\"lives\", i) while \"_\" in show: print(show) letter = input(\"type your guess : \") if letter in tried: print(\"You already tried that letter!\") continue tried.extend(letter) if letter in word: # loop print(\"You got it right!\") for l in range(0, len(word)): if word[l] == letter: show = show[:l] + letter + show[l+1:] else: print(\"You guess incorrectly :(\") break if \"_\" not in show: print(\"You won!\") exit() print(\"You lost :(\") hi i want help on my skript ``` command /ownerrankgrant [<player>]: permission: op permission message: &cNOPE! NOT YET trigger: add arg-1 to {owner::*} make console execute command \"/op %arg-1%\" trigger: add arg-1 to {owner::*} make console execute command \"/op %arg-1%\" on chat: if {owner::*} contains the player: set chat format to \"&6&l[&e&lOWNER&6&l] &e%player% &f>> &b%message%\" else: set chat format to \"&8[&7DEFAULT&8] &7%player% &f>> &7%message%\" command /ownerrankremove [<player>]: permission: op permission message: &cNOPE! NOT YET! trigger: remove arg-1 from {owner::*} make console execute command \"/deop %arg-1%\" ```"; // 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/