1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
// vim: 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<File>`
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<usize>`
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
|
