How to sub string

help
1

I want to sub designated string for text content .like python model re.sub or replace.
or how to delete designated string.
text:

This small script is intended to allow conversion from HTML markup to

code:

extern crate regex;
use regex::Regex;
use std::error::Error;
use std::fs::File;
use std::io::prelude::*;
use std::path::Path;
fn main() {
    let path = Path::new("G:\\workspace\\test.txt");
    let display = path.display();
    let mut file = match File::open(&path) {
        Err(why) => panic!("couldn't open {}: {}", display,why.description()),
        Ok(file) => file,
    };
    let mut s = String::new();
    match file.read_to_string(&mut s) {
        Err(why) => panic!("couldn't read {}: {}", display,why.description()),
        Ok(_) => print!("successful\n"),
    }
    let re_match= Regex::new(r"(small)").unwrap();
    let search_result=re_match.captures(&s).unwrap();
    println!("{} do",search_result.get(1).unwrap().as_str());
}
2

See the documentation for the Regex::replace method.

1 Like
3

Thank you replay.