genomic.rs

A small crate to help implement genetical algorithms in Rust.

This crate defines two traits: - Chromosomes represent a single trainable parameter. The Chromosome trait is implemented for a few built-in types, and you can implement it on your own. - Genome represents a set of Chromosomes.

Implementing the Genome trait is done in a declarative fashion:

```rust use genomic::prelude::*; use genomic::mutate; use genomic::chromosome::UniformCh;

pub struct Triple { first: i32, second: i8, third: f32, }

impl Genome for Triple { fn mutate(&mut self, mutator: &mut Mutator) { mutator .chromosome(&mut self.first) .chromosome(&mut self.second) // For floats, we need to choose a method and bounds for mutating them: .wrap_ch(UniformCh::new(self.third, 0.0, 1.0), &mut self.third); }

fn crossover(&mut self, other: &mut Self, crossover: &mut Crossover<impl rand::Rng>) {
    crossover
        .chromosome(&mut self.first, &mut other.first)
        .chromosome(&mut self.second, &mut other.second)
        .chromosome(&mut self.third, &mut other.third);
}

fn size_hint(&self) -> usize {
    // We have three chromosomes
    3
}

} ```