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

namespace Linq.Recipes.Ch01
{
    public class TypeFunctionsExamples
    {
        public static void Main() 
        {
            Console.WriteLine();
            Console.WriteLine("--- Generator Functions ---");
            Console.WriteLine("- Enumerable.Range -");
            IEnumerable<int> cubes = Enumerable.Range(1,5).Select(num => num * num);
            Console.WriteLine("Powers of 3 (between 1 and 5): ");
            foreach(int cube in cubes)
            {
                Console.Write("{0} ", cube);
            }
            
            Console.WriteLine("\n");
            Console.WriteLine("--- Statistical Functions ---");
            Console.WriteLine("- Enumerable.Count -");
            string[] msProducts = {"Windows", "Office", "Flight Simulator", "Minecraft", "Edge"};
            int numberOfFruits = msProducts.Count();
            Console.WriteLine("Number of (some) Microsoft products: {0}", numberOfFruits);
            
            Console.WriteLine("\n");
            Console.WriteLine("--- Projector Functions ---");
            Console.WriteLine("- Enumerable.Select -");
            IEnumerable<int> squares = Enumerable.Range(1, 5).Select(num => num * num);
            Console.WriteLine("Powers of 2 (between 1 and 5): ");
            foreach(int square in squares)
            {
                Console.Write("{0} ", square);
            }
            
            Console.WriteLine("\n");
            Console.WriteLine("--- Filter Functions ---");
            Console.WriteLine("- Enumerable.First -");
            Console.WriteLine("Microsoft product: {0}", msProducts.First());
            Console.WriteLine ();
        }
    }
}