Linq101-Conversion Operators

 using System;
 using System.Linq;

 namespace Linq101
 {
     class Conversion
     {
         /// <summary>
         /// This sample uses ToArray to immediately evaluate a sequence into an array.
         /// </summary>
         public void Linq54()
         {
             double[] doubles = { 1.7, 2.3, 1.9, 4.1, 2.9 };

             //var doublesArray = doubles.OrderByDescending(d => d).ToArray();
             var sortedDoubles = from d in doubles
                                 orderby d descending
                                 select d;
             var doublesArray = sortedDoubles.ToArray();

             Console.WriteLine("Every other double from highest to lowest:");
             for (int d = ; d < doublesArray.Length; d += )
             {
                 Console.WriteLine(doublesArray[d]);
             }
         }

         /// <summary>
         /// This sample uses ToList to immediately evaluate a sequence into a List<T>.
         /// </summary>
         public void Linq55()
         {
             string[] words = { "cherry", "apple", "blueberry" };

             //var wordList = words.OrderBy(w => w).ToList();
             var sortedWords =
                 from w in words
                 orderby w
                 select w;
             var wordList = sortedWords.ToList();

             Console.WriteLine("The sorted word list:");
             foreach (var w in wordList)
             {
                 Console.WriteLine(w);
             }
         }

         /// <summary>
         /// This sample uses ToDictionary to immediately evaluate a sequence and a related key expression into a dictionary.
         /// </summary>
         public void Linq56()
         {
             var scoreRecords = new[] { new {Name = "Alice", Score = },
                                 new {Name = "Bob"  , Score = },
                                 new {Name = "Cathy", Score = }
                             };

             var scoreRecordsDict = scoreRecords.ToDictionary(s => s.Name);

             Console.WriteLine("Bob' Score: {0}", scoreRecordsDict["Bob"].Score);
         }

         /// <summary>
         /// This sample uses OfType to return only the elements of the array that are of type double.
         /// </summary>
         public void Linq57()
         {
             object[] numbers = { null, 1.0, "two", , "four", , "six", 7.0 };

             var doubles = numbers.OfType<double>();

             Console.WriteLine("Numbers stored as doubles:");
             foreach (var d in doubles)
             {
                 Console.WriteLine(d);
             }
         }
     }
 }