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(0, 10).Where(x => x % 2 != 0).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();
        }
    }