Decision Workspace
yarer vs fee vs expr-solver-lib
Side-by-side comparison of Rust crates
35
yarer
growingv0.1.8
Yarer (Yet Another Rust Expression Resolver) is a library for resolving mathematical expressions. Internally it uses the shunting yard algorithm.
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
| yarer | fee | expr-solver-lib | |
|---|---|---|---|
| Health Score | 35 | 49 | 49 |
| Total Downloads | 9.3K | 1.8K | 1.3K |
| 30d Downloads | 17 | 10 | 28 |
| Dependents | 0 | 0 | 7 |
| Releases | 8 | 7 | 7 |
| Last Updated | 286d ago | 130d ago | 157d ago |
| Age | 2y 7m | 6m | 5m |
Health Breakdown
yarer
Maintenance
8
Quality
6
Community
6
Popularity
5
Documentation
10
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
| yarer | fee | expr-solver-lib | |
|---|---|---|---|
| Version | 0.1.8 | 0.2.4 | 1.2.0 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | MIT OR Apache-2.0 | MIT OR Apache-2.0 | MIT |
| Dependencies | 16 | 7 | 8 |
| Crate Size | 29KB | 136KB | 37KB |
| Features | 0 | 1 | 4 |
| Yanked % | 87.5% | 0.0% | 71.4% |
| Edition | 2021 | 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.
- •yarer has the most downloads (9.3K), suggesting wider adoption.
- •yarer, fee are pre-1.0 — API may change.