/rust/registry/src/index.crates.io-1949cf8c6b5b557f/ndarray-0.17.2/src/argument_traits.rs
Line | Count | Source |
1 | | use std::cell::Cell; |
2 | | use std::mem::MaybeUninit; |
3 | | |
4 | | use crate::math_cell::MathCell; |
5 | | |
6 | | /// A producer element that can be assigned to once |
7 | | pub trait AssignElem<T> |
8 | | { |
9 | | /// Assign the value `input` to the element that self represents. |
10 | | fn assign_elem(self, input: T); |
11 | | } |
12 | | |
13 | | /// Assignable element, simply `*self = input`. |
14 | | impl<T> AssignElem<T> for &mut T |
15 | | { |
16 | 0 | fn assign_elem(self, input: T) |
17 | | { |
18 | 0 | *self = input; |
19 | 0 | } |
20 | | } |
21 | | |
22 | | /// Assignable element, simply `self.set(input)`. |
23 | | impl<T> AssignElem<T> for &Cell<T> |
24 | | { |
25 | 0 | fn assign_elem(self, input: T) |
26 | | { |
27 | 0 | self.set(input); |
28 | 0 | } |
29 | | } |
30 | | |
31 | | /// Assignable element, simply `self.set(input)`. |
32 | | impl<T> AssignElem<T> for &MathCell<T> |
33 | | { |
34 | 0 | fn assign_elem(self, input: T) |
35 | | { |
36 | 0 | self.set(input); |
37 | 0 | } |
38 | | } |
39 | | |
40 | | /// Assignable element, the item in the MaybeUninit is overwritten (prior value, if any, is not |
41 | | /// read or dropped). |
42 | | impl<T> AssignElem<T> for &mut MaybeUninit<T> |
43 | | { |
44 | 0 | fn assign_elem(self, input: T) |
45 | | { |
46 | 0 | *self = MaybeUninit::new(input); |
47 | 0 | } |
48 | | } |