2 files changed, 4 insertions(+), 4 deletions(-)

M codes/eoa_lib/src/evolution.rs
M codes/eoa_lib/src/pairing.rs

@@ 33,7 33,7 @@ pub fn evolution_algorithm<TChromosome: Clone, TResult: Clone, const DParents: u
     parents_count: usize,
     fitness: &impl FitnessFunction<In = TChromosome, Out = TResult>,
     selection: &impl Selection<TChromosome, TResult>,
-    pairing: &mut impl Pairing<DParents, Chromosome = TChromosome, Out = TResult>,
+    pairing: &impl Pairing<DParents, Chromosome = TChromosome, Out = TResult>,
     crossover: &impl Crossover<DParents, Chromosome = TChromosome, Out = TResult>,
     perturbation: &impl PerturbationOperator<Chromosome = TChromosome>,
     replacement: &impl Replacement<TChromosome, TResult>,


@@ 125,7 125,7 @@ pub mod tests {
             50,
             &one_max,
             &TournamentSelection::new(5, 0.8),
-            &mut AdjacentPairing::new(),
+            &AdjacentPairing::new(),
             &BinaryOnePointCrossover::new(),
             &CombinedPerturbation::new(
                 vec![

@@ 11,7 11,7 @@ pub trait Pairing<const D: usize> {
     type Out;
 
     fn pair<T: Iterator<Item = usize>>(
-        &mut self,
+        &self,
         population: &EvaluatedPopulation<Self::Chromosome, Self::Out>,
         parents: T
     ) -> impl Iterator<Item = ParentPairing<D>>;


@@ 36,7 36,7 @@ impl<TChromosome, TOutput> Pairing<2> for AdjacentPairing<TChromosome, TOutput> 
     type Out = TOutput;
 
     fn pair<T: Iterator<Item = usize>>(
-        &mut self,
+        &self,
         _: &EvaluatedPopulation<Self::Chromosome, Self::Out>,
         parents: T
     ) -> impl Iterator<Item = ParentPairing<2>> {