// 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)^(-)|[.,](?=[^.,\n]*[.,](?!$))|[,.]+$|[^0-9.,\n]+").unwrap();
let string = "10.23.45.
10.23.45
123 ->
123
123.45 ->
123.45
123,45 ->
123,45
-123 ->
-123
-123.45 ->
-123.45
-123,45 ->
-123,45
--123.45 ->
-123.45
--123,45 ->
-123,45
a ->
-a ->
-
a123 ->
123
-a123 ->
-123
a123.45 ->
123.45
-a123.45 ->
-123.45
a123.b45 ->
123.45
-a123.b45 ->
-123.45
123.-34 ->
123.34
-123.-34 ->
-123.34
--123.-34 ->
-123.34";
let substitution = "$1";
// result will be a String with the substituted value
let result = regex.replace_all(string, substitution);
println!("{}", result);
}
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: https://docs.rs/regex/latest/regex/