// 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"(?ix)(?:^|(?<=\s)) # delimitador inicial
[+-]?(?:\d+\.\d+|\d+\.|\.\d+|\d+) # valores con o sin signo
(?:e[+-]?\d+)? # parte exponencial
(?=\s) # delimitador final").unwrap();
let string = "Hace coincidir para el sistema de numeración decimal valores numéricos aislados, es decir, valores no unidos a otros caracteres.
test: 11 +11 -11 99-99 a99 a+99 a-99 99a +99a -99a
22e22 22e+22 +22e22 +22e+22
22.22 22. .22
22.e22 22.e+22 22.22e22 22.22e+22 .22e22 .22e+22
88e 88e+ e88 e+88 88e88.";
// result will be an iterator over tuples containing the start and end indices for each match in the string
let result = regex.captures_iter(string);
for mat in result {
println!("{:?}", mat);
}
}
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/