File: destructure-array-1.rs

package info (click to toggle)
rustc 1.85.0%2Bdfsg2-3
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 893,176 kB
  • sloc: xml: 158,127; python: 35,830; javascript: 19,497; cpp: 19,002; sh: 17,245; ansic: 13,127; asm: 4,376; makefile: 1,051; lisp: 29; perl: 29; ruby: 19; sql: 11
file content (27 lines) | stat: -rw-r--r-- 558 bytes parent folder | download | duplicates (7)
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
//@ run-pass

// Ensure that we can do a destructuring bind of a fixed-size array,
// even when the element type has a destructor.

struct D { x: u8 }

impl Drop for D { fn drop(&mut self) { } }

fn main() {
    fn d(x: u8) -> D { D { x: x } }

    let d1 = foo([d(1), d(2), d(3), d(4)], 1);
    let d3 = foo([d(5), d(6), d(7), d(8)], 3);
    assert_eq!(d1.x, 2);
    assert_eq!(d3.x, 8);
}

fn foo([a, b, c, d]: [D; 4], i: usize) -> D {
    match i {
        0 => a,
        1 => b,
        2 => c,
        3 => d,
        _ => panic!("unmatched"),
    }
}