28 lines
433 B
Rust
28 lines
433 B
Rust
|
/*
|
||
|
|
Module: tuple
|
||
|
|
*/
|
||
|
|
|
||
|
|
fn first<T:copy, U:copy>(pair: (T, U)) -> T {
|
||
|
|
let (t, _) = pair;
|
||
|
|
ret t;
|
||
|
|
}
|
||
|
|
|
||
|
|
fn second<T:copy, U:copy>(pair: (T, U)) -> U {
|
||
|
|
let (_, u) = pair;
|
||
|
|
ret u;
|
||
|
|
}
|
||
|
|
|
||
|
|
fn swap<T:copy, U:copy>(pair: (T, U)) -> (U, T) {
|
||
|
|
let (t, u) = pair;
|
||
|
|
ret (u, t);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn test_tuple() {
|
||
|
|
assert first((948, 4039.48)) == 948;
|
||
|
|
assert second((34.5, "foo")) == "foo";
|
||
|
|
assert swap(('a', 2)) == (2, 'a');
|
||
|
|
}
|
||
|
|
|