C# 泛型类的字典

Question

I'm trying to create a Genetic algorithm in C# but I want to separate the genes into classes (chromosomes)

basically I have a DNA class that is defined as

public class DNA<T> { public T[] Genes { get; private set; } }

so I can have genes of type double, bool, int and etc...

Then I want to define a chromosome as

class Chromosome
{
    Dictionary<string, DNA<T>> chromosomes;
}

So I would be able to add to the chromosome multiple DNA types like

chromosomes.add("brain", new DNA<double>(...));
chromosomes.add("traits", new DNA<bool>(...));
chromosomes.add("body", new DNA<int>(...));

Should the dictionary value be object or sould I create an IDNA Interface to the DNA class to hold the object then cast it everytime I need? Or there is an easier/best way to do that? Thanks!

Answer 1

For multiple kind of genes as you wrote you could use interface/abstract class.

For data access instead of casting you can write a simple method GetDNAOfType :

using System;
using System.Collections.Generic;
using System.Linq;

public class Chromosome
{
   Dictionary<string, DNA> chromosomes = new Dictionary<string, DNA>();

   public IEnumerable<DNA<T>> GetDNAOfType<T>()
   {
      return chromosomes.Values.OfType<DNA<T>>();
   }

   public void AddDNA(string key, DNA dna)
   {
      if (chromosomes.ContainsKey(key))
         chromosomes[key] = dna;
      else
         chromosomes.Add(key, dna);
   }
}

public abstract class DNA
{
}

public class DNA<T> : DNA
{
   public T[] Genes { get; private set; }
}