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CSharp · Console

/Program.cs

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

public class Animal 
{
	public string Name { get; set; }
}
public class Cat : Animal { }
public class Dog : Animal { }


public class Program
{
	public static void Main()
	{
		Console.WriteLine(GetFilteredAnimals("Pe", GetCats));
	}
	
	private static List<Cat> GetCats()
	{
		
		return new List<Cat>() { new Cat { Name = "Sphinx" }, new Cat { Name = "Persian" } };
	}
	
	private static List<Dog> GetDogs()
	{
		return new List<Dog>() { new Dog { Name = "Bulldog"}, new Dog { Name = "Dalmatian" } };
	}
	
	private static List<Animal> GetFilteredAnimals(string f, Func<List<Animal>> method)
	{
		var animals = method();
		
		return animals.Where(a => a.Name.StartsWith(f)).ToList<Animal>();
	}
}