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();
}
}