Trait GaProblem 

pub trait GaProblem: Send + Sync {
    type Individual: Individual;

    // Required method
    fn evaluate(&self, individual: &mut Self::Individual);

    // Provided methods
    fn evaluate_parallel(&self, individuals: &mut [Self::Individual]) { ... }
    fn initialize_population<R: Rng>(
        &self,
        size: usize,
        rng: &mut R,
    ) -> Vec<Self::Individual> { ... }
    fn on_generation(
        &self,
        _generation: u32,
        _best: &Self::Individual,
        _population: &[Self::Individual],
    ) { ... }
}

Trait for problem-specific GA operations.

Uses mutable evaluation: evaluate(&mut Individual) can set both fitness and auxiliary state on the individual.

Required Associated Types

type Individual: Individual

The individual type for this problem.

Required Methods

fn evaluate(&self, individual: &mut Self::Individual)

Evaluates the fitness of an individual (mutable — can set auxiliary state).

Provided Methods

fn evaluate_parallel(&self, individuals: &mut [Self::Individual])

Evaluates multiple individuals in parallel. Default implementation uses rayon when the parallel feature is enabled.

fn initialize_population<R: Rng>( &self, size: usize, rng: &mut R, ) -> Vec<Self::Individual>

Creates an initial population.

fn on_generation( &self, _generation: u32, _best: &Self::Individual, _population: &[Self::Individual], )

Called after each generation (for progress reporting).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors