use std::error::Error; use std::fs; pub struct Config { pub query: String, pub filename: String, } impl Config { pub fn new(args: &[String]) -> Result { if args.len() < 3 { return Err("Not enough arguments."); } let query = args[1].clone(); let filename = args[2].clone(); Ok(Config { query, filename }) } } pub fn run(config: Config) -> Result<(), Box> { let contents = fs::read_to_string(config.filename)?; dbg!(contents); Ok(()) }