rustHow to find the first match in a Rust regex?
The find
method of the Regex
type can be used to find the first match in a Rust regex.
Example code
let re = Regex::new(r"\d+").unwrap();
let text = "123 456 789";
let first_match = re.find(text).unwrap();
println!("{:?}", first_match);
Output example
Some((0, 3))
Code explanation
-
let re = Regex::new(r"\d+").unwrap();
: This line creates a newRegex
object from the given pattern. Theunwrap
method is used to handle any errors that may occur. -
let text = "123 456 789";
: This line creates aString
object containing the text to be searched. -
let first_match = re.find(text).unwrap();
: This line calls thefind
method of theRegex
object to find the first match in the given text. Theunwrap
method is used to handle any errors that may occur. -
println!("{:?}", first_match);
: This line prints the result of thefind
method.
Helpful links
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See more codes...