tuples/
tuple_get.rs

1//! Get the nth item of the tuple
2
3/// Get the nth item of the tuple
4pub trait TupleGet {
5    type Output;
6
7    /// Get the nth item of the tuple
8    fn get(&self, index: usize) -> &Self::Output;
9    /// Get the nth item of the tuple
10    fn try_get(&self, index: usize) -> Option<&Self::Output>;
11}
12
13/// Get the nth item of the tuple
14pub trait TupleGetMut: TupleGet {
15    /// Get the nth item of the tuple
16    fn get_mut(&mut self, index: usize) -> &mut Self::Output;
17    /// Get the nth item of the tuple
18    fn try_get_mut(&mut self, index: usize) -> Option<&mut Self::Output>;
19}
20
21/// Swaps two elements in the tuple
22pub trait TupleSwap: TupleGetMut {
23    /// Swaps two elements in the tuple
24    fn swap(&mut self, a: usize, b: usize);
25
26    /// Swaps two elements in the tuple
27    fn try_swap(&mut self, a: usize, b: usize) -> bool;
28}
29
30include!("./gen/tuple_get.rs");
31
32#[test]
33fn test() {
34    let a = (1, 2, 3, 4, 5);
35    assert_eq!(*a.get(2), 3);
36
37    let mut a = (1, 2, 3, 4, 5);
38    *a.get_mut(3) = 6;
39    assert_eq!(a, (1, 2, 3, 6, 5));
40}
41
42#[test]
43fn test_swap() {
44    let mut a = (1, 2, 3, 4, 5);
45    a.swap(1, 3);
46    assert_eq!(a, (1, 4, 3, 2, 5));
47}
tuples/tuple_get.rs

tuples/
tuple_get.rs
