Function file_into_string 

pub fn file_into_string(file: File) -> Result<String>

Read a File into a String.

use std::fs::File;
use file_into_string::*;
 
let file: File = File::open("example.txt").unwrap();
let string: String = file_into_string(file).unwrap();

Note: this function deliberately preserves line endings, which are \n newlines and \r carriage returns.