rustHow do I use regex with strings in Rust?
Regex (regular expressions) can be used to match patterns in strings in Rust. To use regex, you need to import the regex
crate.
extern crate regex;
use regex::Regex;
You can then create a Regex
object with the pattern you want to match.
let re = Regex::new(r"\d+").unwrap();
You can then use the is_match
method to check if the pattern matches a string.
assert!(re.is_match("123"));
You can also use the find
method to find the first match of the pattern in a string.
let text = "123 456";
let caps = re.find(text).unwrap();
assert_eq!(&text[caps.start()..caps.end()], "123");
For more information, see the Regex documentation.
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