Decision Workspace
letterbox-lang vs bf2s vs expr-solver
Side-by-side comparison of Rust crates
40
letterbox-lang
growingv0.3.4
A modular lexer and parser for the Letterbox esoteric programming language.
47
bf2s
experimentalv0.1.1
A simple Brainfuck interpreter that executes code from a string and returns the output as a string.
45
expr-solver
growingv1.0.6
Solves a mathematical expression while following precedence and associativity.
Core Metrics
| letterbox-lang | bf2s | expr-solver | |
|---|---|---|---|
| Health Score | 40 | 47 | 45 |
| Total Downloads | 4.4K | 1.5K | 6.2K |
| 30d Downloads | 25 | 34 | 4 |
| Dependents | 0 | 27 | 0 |
| Releases | 7 | 2 | 5 |
| Last Updated | 172d ago | 244d ago | 776d ago |
| Age | 2y 5m | 11m | 2y 1m |
Health Breakdown
letterbox-lang
Maintenance
8
Quality
15
Community
5
Popularity
4
Documentation
8
bf2s
Maintenance
8
Quality
15
Community
10
Popularity
4
Documentation
10
expr-solver
Maintenance
10
Quality
14
Community
6
Popularity
5
Documentation
10
Technical Details
| letterbox-lang | bf2s | expr-solver | |
|---|---|---|---|
| Version | 0.3.4 | 0.1.1 | 1.0.6 |
| Stable (≥1.0) | ✗ No | ✗ No | ✓ Yes |
| License | non-standard | MIT | MIT |
| Dependencies | 3 | 0 | 1 |
| Crate Size | 13KB | 2KB | 8KB |
| Features | 0 | 0 | 0 |
| Yanked % | 0.0% | 0.0% | 80.0% |
| Edition | 2021 | 2024 | 2021 |
| MSRV | — | — | — |
| Owners | 1 | 1 | 1 |
Links
Quick Verdict
- •bf2s leads with a health score of 47/100, but none of the options score above 80.
- •expr-solver has the most downloads (6.2K), suggesting wider adoption.
- •⚠ expr-solver has not been updated in over a year.
- •letterbox-lang, bf2s are pre-1.0 — API may change.