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        /// a struct to hold all of our configuration
        #[derive(Debug,PartialEq)]
        pub struct Config{
            pub search: char,
            pub line: String,
        }

    impl Config {
        fn new(args: &Vec<String>) -> Self {
            if args.len() < 3 {
                return Err("not ennugh parameters".to_string());
            }

            let s;

            match args[1].chars().nth(0) {
                Some(value) => s = value,
                None => return Err("char mismatch".to_string()),
            }

            Config{
                search: i,
                line: args[2].clone(),
            }
        }
    }

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