A quick gist for reader buffer from file.

easy_open.rs

use std::path::Path;
use std::io::{File, BufferedReader};

/// opens a path to read a file.
fn open(p: &str) -> BufferedReader<File> {
    BufferedReader::new(match File::open(&Path::new(p)) {
        Ok(f) => f,
        Err(e) => panic!("file error: {}", e)
    })
}