// 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)^(?=(?:\d,?){1,10}(?:\.\d{2})?$)[0-9]{1,3}(?:,[0-9]{3})*(?:\.[0-9]+)?$").unwrap();
let string = "I want to make sure that the input is no more than 10 digits before the decimals point so it will match DECIMAL(12,2).
I already tried :
^(?=.{0,13}$)[0-9]{1,3}(,[0-9]{3})*(\\.[0-9]+)?$
But it counts the digits after decimals too, so what I want to match is:
1,111,111,111.00
so it will keep matching with or without the decimals, what I tried only can match with:
1,111,111,111
111,111,111.00
1,111,111,111,1.00";
// 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/