Decision Workspace
kalk vs expr-solver-lib vs mathexpr
Side-by-side comparison of Rust crates
57
kalk
growingv3.2.2
A math evaluator library that supports user-defined functions, variables and units, and can handle fairly ambiguous syntax.
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
| kalk | expr-solver-lib | mathexpr | |
|---|---|---|---|
| Health Score | 57 | 49 | 49 |
| Total Downloads | 67.4K | 1.3K | 184 |
| 30d Downloads | 276 | 29 | 65 |
| Dependents | 44 | 7 | 1 |
| Releases | 45 | 7 | 2 |
| Last Updated | 203d ago | 157d ago | 83d ago |
| Age | 5y 9m | 5m | 2m |
Health Breakdown
kalk
Maintenance
11
Quality
20
Community
11
Popularity
6
Documentation
9
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
| kalk | expr-solver-lib | mathexpr | |
|---|---|---|---|
| Version | 3.2.2 | 1.2.0 | 0.1.1 |
| Stable (≥1.0) | ✓ Yes | ✓ Yes | ✗ No |
| License | MIT | MIT | MIT |
| Dependencies | 6 | 8 | 6 |
| Crate Size | 78KB | 37KB | 27KB |
| Features | 1 | 4 | 2 |
| Yanked % | 0.0% | 71.4% | 0.0% |
| Edition | 2018 | 2024 | 2021 |
| MSRV | — | — | 1.70 |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •kalk leads with a health score of 57/100, but none of the options score above 80.
- •mathexpr is pre-1.0 — API may change.