Decision Workspace
double-map vs hop-hash vs enum-collections
Side-by-side comparison of Rust crates
43
double-map
growingv0.14.0
A HashMap with double key to single data/value
40
hop-hash
experimentalv0.1.0
A Rust hash table using 8-way hopscotch hashing with constant-time worst-case lookups, and SIMD acceleration.
59
enum-collections
stablev2.0.0
EnumMap implemented in safe rust
Core Metrics
| double-map | hop-hash | enum-collections | |
|---|---|---|---|
| Health Score | 43 | 40 | 59 |
| Total Downloads | 20.2K | 276 | 26.0K |
| 30d Downloads | 141 | 4 | 371 |
| Dependents | 0 | 0 | 0 |
| Releases | 15 | 1 | 23 |
| Last Updated | 1431d ago | 175d ago | 3d ago |
| Age | 4y | 5m | 3y 3m |
Health Breakdown
double-map
Maintenance
7
Quality
16
Community
5
Popularity
5
Documentation
10
hop-hash
Maintenance
5
Quality
14
Community
6
Popularity
3
Documentation
12
enum-collections
Maintenance
19
Quality
17
Community
5
Popularity
5
Documentation
13
Technical Details
| double-map | hop-hash | enum-collections | |
|---|---|---|---|
| Version | 0.14.0 | 0.1.0 | 2.0.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | Apache-2.0 | MIT OR Apache-2.0 | Apache-2.0 |
| Dependencies | 0 | 8 | 5 |
| Crate Size | 30KB | 222KB | 13KB |
| Features | 0 | 9 | 6 |
| Yanked % | 0.0% | 0.0% | 13.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | — | 1.89.0 | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •enum-collections leads with a health score of 59/100, but none of the options score above 80.
- •⚠ double-map has not been updated in over a year.
- •double-map, hop-hash are pre-1.0 — API may change.