10.3 .NET 3.5 中的扩展方法

10.3.4 用 Select 方法和匿名类型进行投影

     class Program
     {
         static void Main(string[] args)
         {
             var collection = Enumerable.Range(, ).Where(x => x %  != ).Reverse().Select(x => new { Original = x, SquareRoot = Math.Sqrt(x) });
             foreach (var item in collection)
             {
                 Console.WriteLine("sqrt {0} {1}", item.Original, item.SquareRoot);
             }

             Console.ReadKey();
         }
     }