Decision Workspace
deref-once-lock vs once_map vs nospin
Side-by-side comparison of Rust crates
45
deref-once-lock
experimentalv0.1.0
A std::sync::OnceLock wrapper that dereferences to its initialized value.
64
once_map
growingv0.4.24
Single assignment and lazy maps
57
nospin
growingv0.2.4
Rust crate containing an embedded version of a Mutex which can be used in `no_std` projects which are single-threaded.
Core Metrics
| deref-once-lock | once_map | nospin | |
|---|---|---|---|
| Health Score | 45 | 64 | 57 |
| Total Downloads | 20 | 943.1K | 3.7K |
| 30d Downloads | 0 | 76.3K | 0 |
| Dependents | 0 | 153 | 0 |
| Releases | 1 | 30 | 8 |
| Last Updated | 43d ago | 40d ago | 375d ago |
| Age | 1m | 3y 11m | 1y |
Health Breakdown
deref-once-lock
Maintenance
10
Quality
15
Community
6
Popularity
2
Documentation
12
once_map
Maintenance
17
Quality
13
Community
12
Popularity
7
Documentation
15
nospin
Maintenance
14
Quality
18
Community
6
Popularity
4
Documentation
15
Technical Details
| deref-once-lock | once_map | nospin | |
|---|---|---|---|
| Version | 0.1.0 | 0.4.24 | 0.2.4 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 0 | 7 | 2 |
| Crate Size | 7KB | 16KB | 26KB |
| Features | 0 | 5 | 6 |
| Yanked % | 0.0% | 10.0% | 0.0% |
| Edition | 2024 | 2021 | 2024 |
| MSRV | 1.85 | 1.65 | 1.85 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •once_map leads with a health score of 64/100, but none of the options score above 80.
- •once_map is depended on by 153 crates — strongest ecosystem trust.
- •⚠ nospin has not been updated in over a year.