option-cell
| Crates.io | option-cell |
| lib.rs | option-cell |
| version | 0.1.0 |
| source | src |
| created_at | 2023-09-10 06:09:43.707531 |
| updated_at | 2023-09-10 06:09:43.707531 |
| description | OptionCell: OnceCell but derivable from Option |
| homepage | |
| repository | https://github.com/qnighy/option-cell |
| max_upload_size | |
| id | 968621 |
| size | 12,108 |
Masaki Hara (qnighy)
documentation
README
OptionCell: OnceCell but derivable from Option
This library provides an equivalent of OnceCell, but it guarantees layout compatibility with Option<T>, providing additional transmute helpers.
Known use-cases
- Implementing the unification algorithm without exposing the interior mutability to the user or unnecessarily cloning the value.
Usage
cargo add option-cell
use option_cell::OptionCell;
let mut options = vec![None, None];
let cells = OptionCell::from_mut_slice(&mut options);
cells[0].set(1).unwrap();
Development
Check with MIRI:
cargo +nightly miri test