Regular Expressions 101

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  • 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
  • A character except: a, b or c
  • A character in the range: a-z
  • A character not in the range: a-z
  • A character in the range: a-z or A-Z
  • Any single character
  • Alternate - match either a or b
  • Any whitespace character
  • Any non-whitespace character
  • Any digit
  • Any non-digit
  • Any word character
  • Any non-word character
  • Match everything enclosed
  • Capture everything enclosed
  • Zero or one of a
  • Zero or more of a
  • One or more of a
  • Exactly 3 of a
  • 3 or more of a
  • Between 3 and 6 of a
  • Start of string
  • End of string
  • A word boundary
  • Non-word boundary

Regular Expression


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)\\"\d{1,3}cm\\""#).unwrap(); let string = "\"<?xml version=\\\"1.0\\\" standalone=\\\"no\\\"?>\", \"<svg xmlns=\\\"\\\" version=\\\"1.1\\\" width=\\\"1250cm\\\" height=\\\"1250cm\\\">\", \"<desc>9W43OV00W8JKMA1IJNEYAM1WTG9AZH8K10LC</desc>\", \"<g id=\\\"HMLW03D1BYIQ\\\" fill=\\\"red\\\">\", \"<rect x=\\\"252cm\\\" y=\\\"252cm\\\" width=\\\"252cm\\\" height=\\\"252cm\\\"/>\", \"<rect x=\\\"72cm\\\" y=\\\"72cm\\\" width=\\\"72cm\\\" height=\\\"72cm\\\"/>\", \"<rect x=\\\"131cm\\\" y=\\\"131cm\\\" width=\\\"131cm\\\" height=\\\"131cm\\\"/>\", \"<rect x=\\\"228cm\\\" y=\\\"228cm\\\" width=\\\"228cm\\\" height=\\\"228cm\\\"/>\", \"<rect x=\\\"240cm\\\" y=\\\"240cm\\\" width=\\\"240cm\\\" height=\\\"240cm\\\"/>\", \"<rect x=\\\"232cm\\\" y=\\\"232cm\\\" width=\\\"232cm\\\" height=\\\"232cm\\\"/>\", \"<rect x=\\\"192cm\\\" y=\\\"192cm\\\" width=\\\"192cm\\\" height=\\\"192cm\\\"/>\", \"<rect x=\\\"0cm\\\" y=\\\"0cm\\\" width=\\\"0cm\\\" height=\\\"0cm\\\"/>\", \"<rect x=\\\"0cm\\\" y=\\\"0cm\\\" width=\\\"0cm\\\" height=\\\"0cm\\\"/>\", \"<rect x=\\\"0cm\\\" y=\\\"0cm\\\" width=\\\"0cm\\\" height=\\\"0cm\\\"/>\", \"<rect x=\\\"65cm\\\" y=\\\"65cm\\\" width=\\\"65cm\\\" height=\\\"65cm\\\"/>\", \"<rect x=\\\"81cm\\\" y=\\\"81cm\\\" width=\\\"81cm\\\" height=\\\"81cm\\\"/>\", \"<rect x=\\\"65cm\\\" y=\\\"65cm\\\" width=\\\"65cm\\\" height=\\\"65cm\\\"/>\", \"<rect x=\\\"80cm\\\" y=\\\"80cm\\\" width=\\\"80cm\\\" height=\\\"80cm\\\"/>\", \"<rect x=\\\"82cm\\\" y=\\\"82cm\\\" width=\\\"82cm\\\" height=\\\"82cm\\\"/>\", \"<rect x=\\\"81cm\\\" y=\\\"81cm\\\" width=\\\"81cm\\\" height=\\\"81cm\\\"/>\", \"</g>\""; // 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: