Struct FnCodec

pub struct FnCodec<C: Chromosome, T> { /* private fields */ }

A Codec that uses functions to encode and decode a Genotype to and from a type T. Most of the other codecs in this module are more specialized and are used to create Genotypes of specific types of Chromosomes. This one, however, is more general and can be used to create Genotypes of any type of Chromosome.

Example

use radiate_core::*;

const N_QUEENS: usize = 8;

fn main() {
    // this is a simple example of the NQueens problem.
    // The resulting codec type will be FnCodec<IntChromosome<i8>, Vec<i8>>.
    let codec = FnCodec::new()
        .with_encoder(|| {
            Genotype::new(vec![IntChromosome::new((0..N_QUEENS)
                    .map(|_| IntGene::from(0..N_QUEENS as i8))
                    .collect(),
            )])
        })
        .with_decoder(|genotype| {
            genotype[0]
                .genes()
                .iter()
                .map(|g| *g.allele())
                .collect::<Vec<i8>>()
        });

    // encode and decode
    let genotype: Genotype<IntChromosome<i8>> = codec.encode();
    let decoded: Vec<i8> = codec.decode(&genotype);
}

Type Parameters

• C: The type of chromosome used in the genotype, which must implement the Chromosome trait.
• T: The type that the genotype will be decoded to.

Implementations

impl<C: Chromosome, T> FnCodec<C, T>

pub fn new() -> Self

pub fn with_encoder<F>(self, encoder: F) -> Self

where F: Fn() -> Genotype<C> + 'static,

pub fn with_decoder<F>(self, decoder: F) -> Self

where F: Fn(&Genotype<C>) -> T + 'static,

Trait Implementations

impl<C: Clone + Chromosome, T: Clone> Clone for FnCodec<C, T>

fn clone(&self) -> FnCodec<C, T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<C: Chromosome, T> Codec<C, T> for FnCodec<C, T>

fn encode(&self) -> Genotype<C>

fn decode(&self, genotype: &Genotype<C>) -> T

impl<C: Default + Chromosome, T: Default> Default for FnCodec<C, T>

fn default() -> FnCodec<C, T>

Returns the “default value” for a type.