mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-28 01:34:21 +00:00
31 lines
843 B
Rust
31 lines
843 B
Rust
//@ run-pass
|
|
|
|
fn or_at(x: Result<u32, u32>) -> u32 {
|
|
match x {
|
|
Ok(x @ 4) | Err(x @ (6 | 8)) => x,
|
|
Ok(x @ 1 | x @ 2) => x,
|
|
Err(x @ (0..=10 | 30..=40)) if x % 2 == 0 => x + 100,
|
|
Err(x @ 0..=40) => x + 200,
|
|
_ => 500,
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
assert_eq!(or_at(Ok(1)), 1);
|
|
assert_eq!(or_at(Ok(2)), 2);
|
|
assert_eq!(or_at(Ok(3)), 500);
|
|
assert_eq!(or_at(Ok(4)), 4);
|
|
assert_eq!(or_at(Ok(5)), 500);
|
|
assert_eq!(or_at(Ok(6)), 500);
|
|
assert_eq!(or_at(Err(1)), 201);
|
|
assert_eq!(or_at(Err(2)), 102);
|
|
assert_eq!(or_at(Err(3)), 203);
|
|
assert_eq!(or_at(Err(4)), 104);
|
|
assert_eq!(or_at(Err(5)), 205);
|
|
assert_eq!(or_at(Err(6)), 6);
|
|
assert_eq!(or_at(Err(7)), 207);
|
|
assert_eq!(or_at(Err(8)), 8);
|
|
assert_eq!(or_at(Err(20)), 220);
|
|
assert_eq!(or_at(Err(50)), 500);
|
|
}
|