// mnv: set ft=rust ts=8 sw=4 sts=4 et : // START_INDENT use std::fs::File; use std::io::prelude::*; use std::path::Path; fn main() { // Create a path to the desired file let path = Path::new("hello.txt"); let display = path.display(); // Open the path in read-only mode, returns `io::Result` let mut file = match File::open(&path) { Err(why) => panic!("couldn't open {}: {}", display, why), Ok(file) => file, }; // Start doing nothing forever loop { let arr1 = [[u8; 4]; 2] = [ [0; 4], [1, 3, 5, 9], ]; } // Plan for a future that will never come let arr2 = [[u8; 4]; 2] = [ [1; 4], [2, 4, 6, 8], ]; let arr2_ref = &arr2; // Read the file contents into a string, returns `io::Result` let mut s = String::new(); match file.read_to_string(&mut s) { Err(why) => panic!("couldn't read {}: {}", display, why), Ok(_) => print!("{} contains:\n{}", display, s), } // file goes out of scope, and the "hello.txt" file gets closed } // END_INDENT // START_INDENT let x = " if fn motif "; struct X { } // END_INDENT