Decision Workspace
constcat vs concat_const vs const-gen
Side-by-side comparison of Rust crates
57
constcat
growingv0.6.1
concat! with support for const variables and expressions
45
concat_const
growingv0.2.0
const `&[u8]` and `&str` concatenation
68
const-gen
stablev1.6.9
A crate for generating (relatively) complex compile-time constants in rust.
Core Metrics
| constcat | concat_const | const-gen | |
|---|---|---|---|
| Health Score | 57 | 45 | 68 |
| Total Downloads | 10.0M | 20.4K | 321.8K |
| 30d Downloads | 1.2M | 393 | 25.5K |
| Dependents | 501 | 26 | 34 |
| Releases | 11 | 5 | 45 |
| Last Updated | 313d ago | 353d ago | 37d ago |
| Age | 4y | 2y 5m | 4y 11m |
Health Breakdown
constcat
Maintenance
9
Quality
17
Community
12
Popularity
8
Documentation
11
concat_const
Maintenance
6
Quality
11
Community
10
Popularity
5
Documentation
13
const-gen
Maintenance
17
Quality
22
Community
10
Popularity
7
Documentation
12
Technical Details
| constcat | concat_const | const-gen | |
|---|---|---|---|
| Version | 0.6.1 | 0.2.0 | 1.6.9 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 0 | 0 | 2 |
| Crate Size | 9KB | 2KB | 11KB |
| Features | 1 | 0 | 5 |
| Yanked % | 0.0% | 20.0% | 2.2% |
| Edition | 2018 | 2021 | 2018 |
| MSRV | 1.66 | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •const-gen leads with a health score of 68/100, but none of the options score above 80.
- •constcat has the most downloads (10.0M), suggesting wider adoption.
- •constcat is depended on by 501 crates — strongest ecosystem trust.
- •constcat, concat_const are pre-1.0 — API may change.