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", so this trait is not object safe.

Implementors