Decision Workspace
cantrip vs immutable-chunkmap vs frozen-collections-core
Side-by-side comparison of Rust crates
46
cantrip
growingv0.5.0
Practical extension methods for standard Rust collections
58
immutable-chunkmap
growingv2.1.2
A fast immutable map and set with batch insert and update methods, COW operations, and big O efficient implementations of set and merge operations
60
frozen-collections-core
growingv0.9.1
Implementation logic for frozen collections.
Core Metrics
| cantrip | immutable-chunkmap | frozen-collections-core | |
|---|---|---|---|
| Health Score | 46 | 58 | 60 |
| Total Downloads | 10.6K | 3.8M | 30.0K |
| 30d Downloads | 60 | 207.1K | 8.5K |
| Dependents | 0 | 216 | 26 |
| Releases | 10 | 37 | 10 |
| Last Updated | 201d ago | 199d ago | 30d ago |
| Age | 1y 8m | 8y 3m | 1y 3m |
Health Breakdown
cantrip
Maintenance
10
Quality
15
Community
6
Popularity
5
Documentation
10
immutable-chunkmap
Maintenance
10
Quality
16
Community
12
Popularity
8
Documentation
12
frozen-collections-core
Maintenance
17
Quality
16
Community
10
Popularity
5
Documentation
12
Technical Details
| cantrip | immutable-chunkmap | frozen-collections-core | |
|---|---|---|---|
| Version | 0.5.0 | 2.1.2 | 0.9.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 OR MIT | MIT |
| Dependencies | 1 | 14 | 10 |
| Crate Size | 72KB | 48KB | 69KB |
| Features | 0 | 4 | 5 |
| Yanked % | 0.0% | 10.8% | 0.0% |
| Edition | 2024 | 2018 | 2024 |
| MSRV | — | — | 1.90.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •frozen-collections-core leads with a health score of 60/100, but none of the options score above 80.
- •immutable-chunkmap has the most downloads (3.8M), suggesting wider adoption.
- •immutable-chunkmap is depended on by 216 crates — strongest ecosystem trust.
- •cantrip, frozen-collections-core are pre-1.0 — API may change.