How do I set up Criterion for benchmarking in Rust?

How do I set up Criterion for benchmarking in Rust?

To set up Criterion in Rust, first add it to your Cargo.toml file under [dev-dependencies] like this:

[dev-dependencies]
criterion = "0.3"

What do I do after adding it to Cargo.toml?

Next, create a new file in the benches directory, for example, my_benchmark.rs. Then, you can write your benchmarks using the Criterion API.

Can you show me a simple benchmark example?

Sure! Here's a simple example:

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

fn my_function() {
    // Your code here
}

fn benchmark(c: &mut Criterion) {
    c.bench_function("my_function", |b| b.iter(|| my_function()));
}

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

How do I run the benchmarks once they're set up?

You can run your benchmarks using the command cargo bench in your terminal. This will execute the benchmarks you've defined.