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

// 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)[{(, ](?<Dimensions>[a-z0-9A-Z\[\.\]+[\-\ \_]*)[\.&\[]").unwrap(); let string = "SELECT { [Measures].[IMS Org Count] } ON COLUMNS, NONEMPTY ( { [End User].[End User ID].[End User ID].MEMBERS * [End User].[End User Name].[End User Name].MEMBERS * [Product].[PMBU Short Desc].[PMBU Short Desc].MEMBERS * [Product].[PMBU Medium Desc].[PMBU Medium Desc].MEMBERS * [IMS Org].[Unique Id].[Unique Id].MEMBERS * [IMS Org].[IMS Org Id].[IMS Org Id].MEMBERS * [IMS Org].[MC Org Name].[MC Org Name].MEMBERS * [Is Active Account].[Is Active Account].[Is Active Account].MEMBERS* [Billing End User].[End User ID].[End User ID].MEMBERS } , [Measures].[IMS Org Count] ) ON ROWS FROM ( SELECT CASE '1' WHEN \"5\" THEN [Account Manager].[AM Org Lead Ldap].[AM Org Lead Ldap].[xxxx] WHEN \"4\" THEN [Account Manager].[Regional Manager Ldap].[Regional Manager Ldap].[xxx] WHEN \"3\" THEN [Account Manager].[AM Manager Ldap].[AM Manager Ldap].[xxx] WHEN \"2\" THEN [Account Manager].[AM Lead Ldap].[AM Lead Ldap].[xxx] WHEN \"1\" THEN [Account Manager].[AM Ldap].[AM Ldap].[xxxx] END ON 0 FROM XX )"; // 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/