sp_grep 0.1.0

A short description of my package
Documentation 
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use std::env;
use std::process;

use sp_grep::Config;

fn main() {
    // if false -> exist variable
    let exist_variable: bool = env::var("SP_ENV_VARIABLE").is_err();
    println!("exist_variable ? : \n {} ", exist_variable);
    
    // Err Catch From Pipe(|err|) -> Closure
    // env::args return Iterator Trait
    let config = Config::new(env::args()).unwrap_or_else(|err| {
        eprintln!("Error In Parsing Args \n {} ", err);
        // return ,lppexit code 1
        process::exit(1);
    });

    // Handling Only Error
    if let Err(e) = sp_grep::run(config) {
        eprintln!("Application Error: {}", e);
        process::exit(1);
    }
}