$ json5_

Crate

Name: json5 New version: 1.0.0 Release date: 2025-11-29T21:54:35.034225Z

Crate readme

Short description Statistics-driven Microbenchmarking in Rust

Long description Criterion.rs helps you write fast code by detecting and measuring performance improvements or regressions, even small ones, quickly and accurately. You can optimize with confidence, knowing how each change affects the performance of your code.

Features • Statistics: Statistical analysis detects if, and by how much, performance has changed since the last benchmark run • Charts: Uses gnuplot to generate detailed graphs of benchmark results • Stable-compatible: Benchmark your code without installing nightly Rust

Code Examples Add to Cargo.toml

 [dev-dependencies]
criterion = { version = "0.7", features = ["html_reports"] }

[[bench]]
name = "my_benchmark"
harness = false

Basic benchmark setup

 use std::hint::black_box;
use criterion::{criterion_group, criterion_main, Criterion};

fn fibonacci(n: u64) -> u64 {
    match n {
        0 => 1,
        1 => 1,
        n => fibonacci(n-1) + fibonacci(n-2),
    }
}

fn criterion_benchmark(c: &mut Criterion) {
    c.bench_function("fib 20", |b| b.iter(|| fibonacci(black_box(20))));
}

criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);

Run your benchmark

 cargo bench

Links • https://criterion-rs.github.io/book/getting_started.html • https://criterion-rs.github.io/book/index.html • https://docs.rs/crate/criterion/ • https://github.com/criterion-rs/criterion.rs/blob/master/CHANGELOG.md • https://crates.io/crates/criterion • https://github.com/criterion-rs/criterion.rs/blob/master/CONTRIBUTING.md • https://github.com/bluss/bencher • http://www.serpentine.com/criterion/ • https://github.com/BurntSushi/cargo-benchcmp • https://github.com/ferrous-systems/flamegraph • https://crates.io/crates/criterion-cycles-per-byte • https://crates.io/crates/criterion-perf-events

https://api.github.com/repos/callum-oakley/json5-rs/releases/266162700

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Code Examples