rustHow to match digits with regex in Rust?

Matching digits with regex in Rust can be done using the \d character class. This character class matches any single digit from 0 to 9.

Example code

let re = Regex::new(r"\d").unwrap();
let text = "123";

for cap in re.captures_iter(text) {
    println!("{}", &cap[0]);
}

Output example

1
2
3

Code explanation

• Regex::new(r"\d"): creates a new Regex object with the pattern \d which matches any single digit from 0 to 9.
• captures_iter(text): returns an iterator over all the captures in the text.
• &cap[0]: returns the first capture group, which in this case is the digit.

Helpful links

• Regex Documentation
• Character Classes

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