Example
use std::env;
use std::fs::File;
use std::io::Write;
fn main() {
// Create a temporary file.
let temp_directory = env::temp_dir();
let temp_file = temp_directory.join("file");
// Open a file in write-only (ignoring errors).
// This creates the file if it does not exist (and empty the file if it exists).
let mut file = File::create(temp_file).unwrap();
// Write a &str in the file (ignoring the result).
writeln!(&mut file, "Hello World!").unwrap();
// Write a byte string.
file.write(b"Bytes\n").unwrap();
}
