Decision Workspace
lexper vs expr-solver-lib vs mathexpr
Side-by-side comparison of Rust crates
46
lexper
experimentalv0.0.3
A simple CLI calculator with a handwritten lexer and parser in Rust.
49
expr-solver-lib
experimentalv1.2.0
Mathematical expression evaluator with bytecode compilation and configurable numeric precision (f64 or 128-bit Decimal)
49
mathexpr
experimentalv0.1.1
A fast, safe mathematical expression parser and evaluator with bytecode compilation
Core Metrics
| lexper | expr-solver-lib | mathexpr | |
|---|---|---|---|
| Health Score | 46 | 49 | 49 |
| Total Downloads | 1.2K | 1.3K | 184 |
| 30d Downloads | 5 | 29 | 65 |
| Dependents | 0 | 7 | 1 |
| Releases | 3 | 7 | 2 |
| Last Updated | 268d ago | 157d ago | 83d ago |
| Age | 9m | 5m | 2m |
Health Breakdown
lexper
Maintenance
10
Quality
15
Community
6
Popularity
4
Documentation
11
expr-solver-lib
Maintenance
16
Quality
11
Community
8
Popularity
4
Documentation
10
mathexpr
Maintenance
9
Quality
15
Community
7
Popularity
3
Documentation
15
Technical Details
| lexper | expr-solver-lib | mathexpr | |
|---|---|---|---|
| Version | 0.0.3 | 1.2.0 | 0.1.1 |
| Stable (≥1.0) | ✗ No | ✓ Yes | ✗ No |
| License | non-standard | MIT | MIT |
| Dependencies | 0 | 8 | 6 |
| Crate Size | 8KB | 37KB | 27KB |
| Features | 0 | 4 | 2 |
| Yanked % | 0.0% | 71.4% | 0.0% |
| Edition | 2024 | 2024 | 2021 |
| MSRV | — | — | 1.70 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •expr-solver-lib leads with a health score of 49/100, but none of the options score above 80.
- •lexper, mathexpr are pre-1.0 — API may change.