// 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|\.)\d+(?:\.\d+)?\s*?(?:mg|kg|ml|q\.s\.|ui|M|g|µg)(?!\w)").unwrap();
let string = "Examples: 0.9 mg, 9 mg, 9mg, 0.9mg
0.9mg is the approximate dosage
98 is not an acceptable number; it has no unit
9.4.4mg is not acceptable; it is formatted wrong
9.7kg is fine, but 9.7kgasdfghjkl is not";
// 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/