how-to-extract-data-with-regex-in-rust.md

How to extract data with regex in Rust?

// plain

Regex (regular expressions) can be used to extract data from strings in Rust. To use regex, the regex crate must be imported.

extern crate regex;

use regex::Regex;

fn main() {
    let re = Regex::new(r"\d+").unwrap();
    let text = "The answer is 42";

    println!("{:?}", re.find(text));
}

Output example

Some("42")

The code above uses the Regex::new function to create a new Regex object from a string. The find method is then used to search for the first occurrence of the regex pattern in the given string.

Parts of the code:

• extern crate regex: imports the regex crate.
• use regex::Regex: imports the Regex type from the regex crate.
• Regex::new(r"\d+"): creates a new Regex object from the given string.
• find(text): searches for the first occurrence of the regex pattern in the given string.

Helpful links

• Rust Regex Documentation
• Rust Regex Tutorial

group: rust-regex

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