Decision Workspace
const-dispatch vs const_fn vs qed
Side-by-side comparison of Rust crates
51
const-dispatch
growingv0.1.0
Static dispatch of small runtime `enum`s into the const/type reälm, to reduce runtime branching
58
const_fn
growingv0.4.12
A lightweight attribute for easy generation of const functions with conditional compilations.
56
qed
growingv1.6.1
Compile-time assertions
Core Metrics
| const-dispatch | const_fn | qed | |
|---|---|---|---|
| Health Score | 51 | 58 | 56 |
| Total Downloads | 4.0K | 61.6M | 77.1K |
| 30d Downloads | 0 | 1.1M | 3.5K |
| Dependents | 0 | 155 | 0 |
| Releases | 5 | 25 | 10 |
| Last Updated | 574d ago | 132d ago | 1137d ago |
| Age | 1y 7m | 7y 6m | 4y 3m |
Health Breakdown
const-dispatch
Maintenance
12
Quality
17
Community
3
Popularity
4
Documentation
15
const_fn
Maintenance
12
Quality
15
Community
12
Popularity
8
Documentation
11
qed
Maintenance
4
Quality
20
Community
11
Popularity
6
Documentation
15
Technical Details
| const-dispatch | const_fn | qed | |
|---|---|---|---|
| Version | 0.1.0 | 0.4.12 | 1.6.1 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | Zlib OR MIT OR Apache-2.0 | Apache-2.0 OR MIT | MIT |
| Dependencies | 3 | 0 | 1 |
| Crate Size | 15KB | 14KB | 6KB |
| Features | 4 | 0 | 0 |
| Yanked % | 0.0% | 4.0% | 0.0% |
| Edition | 2021 | 2018 | 2021 |
| MSRV | 1.79.0 | 1.31 | 1.64.0 |
| Owners | 1 | 1 | 2 (team) |
Links
Quick Verdict
- •const_fn leads with a health score of 58/100, but none of the options score above 80.
- •const_fn is depended on by 155 crates — strongest ecosystem trust.
- •⚠ const-dispatch, qed have not been updated in over a year.
- •const-dispatch, const_fn are pre-1.0 — API may change.