12 lines
267 B
Rust
12 lines
267 B
Rust
fn is_even(&&x: uint) -> bool { (x % 2u) == 0u }
|
|
|
|
fn main() {
|
|
assert ![1u, 2u]/_.all(is_even);
|
|
assert [2u, 4u]/_.all(is_even);
|
|
assert []/_.all(is_even);
|
|
|
|
assert !some(1u).all(is_even);
|
|
assert some(2u).all(is_even);
|
|
assert none.all(is_even);
|
|
}
|