Decision Workspace
fixed_str vs fstr vs qstr
Side-by-side comparison of Rust crates
47
fixed_str
growingv0.9.1
Fixed-size, null-padded UTF-8 string type with const-safe construction and binary serialization support.
65
fstr
growingv0.2.22
A stack-allocated fixed-length string type
50
qstr
experimentalv0.2.0
Cache-efficient, stack-allocated string types
Core Metrics
| fixed_str | fstr | qstr | |
|---|---|---|---|
| Health Score | 47 | 65 | 50 |
| Total Downloads | 2.1K | 392.0K | 1.9K |
| 30d Downloads | 0 | 14.0K | 0 |
| Dependents | 3 | 116 | 0 |
| Releases | 2 | 35 | 5 |
| Last Updated | 475d ago | 35d ago | 224d ago |
| Age | 1y 3m | 3y 7m | 8m |
Health Breakdown
fixed_str
Maintenance
6
Quality
17
Community
8
Popularity
4
Documentation
12
fstr
Maintenance
17
Quality
14
Community
12
Popularity
7
Documentation
15
qstr
Maintenance
12
Quality
16
Community
6
Popularity
4
Documentation
12
Technical Details
| fixed_str | fstr | qstr | |
|---|---|---|---|
| Version | 0.9.1 | 0.2.22 | 0.2.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✗ No |
| License | MIT OR Apache-2.0 | Apache-2.0 | Apache-2.0 |
| Dependencies | 5 | 2 | 2 |
| Crate Size | 27KB | 17KB | 14KB |
| Features | 6 | 4 | 3 |
| Yanked % | 0.0% | 8.6% | 0.0% |
| Edition | 2021 | 2024 | 2024 |
| MSRV | 1.60 | 1.85 | 1.87 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •fstr leads with a health score of 65/100, but none of the options score above 80.
- •fstr is depended on by 116 crates — strongest ecosystem trust.
- •⚠ fixed_str has not been updated in over a year.