mytest/
lib.rs

1use std::error::Error;
2use std::fs;
3
4pub struct Config {
5    pub query: String,
6    pub filename: String,
7}
8
9impl Config {
10    pub fn new(args: &[String]) -> Result<Config, &str> {
11        // --snip--
12        if args.len() < 3 {
13            return Err("not enough arguments");
14        }
15
16        let query = args[1].clone();
17        let filename = args[2].clone();
18
19        Ok(Config { query, filename })
20    }
21}
22
23
24pub fn run(config: Config) -> Result<(), Box<dyn Error>> {
25    // --snip--
26    let contents = fs::read_to_string(config.filename)?;
27
28    println!("With text:\n{}", contents);
29
30    Ok(())
31}
32
mytest/lib.rs

mytest/
lib.rs
