Decision Workspace
default_new vs default2 vs fancy_constructor
Side-by-side comparison of Rust crates
44
default_new
experimentalv0.1.0
A DefaultNew derive to generate a Default impl that just calls Self::new().
59
default2
stablev2.1.0
Default implementation using macros
55
fancy_constructor
growingv2.1.0
Derive a highly configurable constructor for your struct
Core Metrics
| default_new | default2 | fancy_constructor | |
|---|---|---|---|
| Health Score | 44 | 59 | 55 |
| Total Downloads | 13 | 10.2K | 2.2M |
| 30d Downloads | 13 | 134 | 224.6K |
| Dependents | 0 | 0 | 12 |
| Releases | 1 | 11 | 10 |
| Last Updated | 3d ago | 14d ago | 320d ago |
| Age | 3d | 2y 10m | 2y 6m |
Health Breakdown
default_new
Maintenance
13
Quality
14
Community
6
Popularity
1
Documentation
10
default2
Maintenance
17
Quality
19
Community
5
Popularity
5
Documentation
13
fancy_constructor
Maintenance
8
Quality
19
Community
8
Popularity
8
Documentation
12
Technical Details
| default_new | default2 | fancy_constructor | |
|---|---|---|---|
| Version | 0.1.0 | 2.1.0 | 2.1.0 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT OR Apache-2.0 |
| Dependencies | 1 | 3 | 4 |
| Crate Size | 6KB | 8KB | 8KB |
| Features | 0 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 0.0% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | — | — | 1.71.0 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •default2 leads with a health score of 59/100, but none of the options score above 80.
- •fancy_constructor has the most downloads (2.2M), suggesting wider adoption.
- •default_new is pre-1.0 — API may change.