Decision Workspace
rsc vs fee vs expr-solver-lib
Side-by-side comparison of Rust crates
47
rsc
growingv3.0.0
A fast calculator for solving scientific and algebraic math equations in strings.
49
fee
experimentalv0.2.4
Expression evaluator supporting numeric, logical and bitwise operators
49
expr-solver-lib
experimentalv1.2.0
Mathematical expression evaluator with bytecode compilation and configurable numeric precision (f64 or 128-bit Decimal)
Core Metrics
| rsc | fee | expr-solver-lib | |
|---|---|---|---|
| Health Score | 47 | 49 | 49 |
| Total Downloads | 90.0K | 1.8K | 1.3K |
| 30d Downloads | 4.6K | 10 | 29 |
| Dependents | 39 | 0 | 7 |
| Releases | 13 | 7 | 7 |
| Last Updated | 726d ago | 130d ago | 157d ago |
| Age | 7y 7m | 6m | 5m |
Health Breakdown
rsc
Maintenance
4
Quality
18
Community
10
Popularity
6
Documentation
9
fee
Maintenance
13
Quality
13
Community
6
Popularity
4
Documentation
13
expr-solver-lib
Maintenance
16
Quality
11
Community
8
Popularity
4
Documentation
10
Technical Details
| rsc | fee | expr-solver-lib | |
|---|---|---|---|
| Version | 3.0.0 | 0.2.4 | 1.2.0 |
| Stable (≥1.0) | ✓ Yes | ✗ No | ✓ Yes |
| License | MIT | MIT OR Apache-2.0 | MIT |
| Dependencies | 3 | 7 | 8 |
| Crate Size | 15KB | 136KB | 37KB |
| Features | 1 | 1 | 4 |
| Yanked % | 7.7% | 0.0% | 71.4% |
| Edition | 2018 | 2024 | 2024 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •fee leads with a health score of 49/100, but none of the options score above 80.
- •rsc has the most downloads (90.0K), suggesting wider adoption.
- •⚠ rsc has not been updated in over a year.
- •fee is pre-1.0 — API may change.