摘要： Lambda 表达式:Func doubleAppend= x => x + x;Console.WriteLine (doubleAppend(“test”)); // testtestLINQ 查询:string[] names = { "Tom", "Dick", "Harry" };IEnumerable filteredNames = Enumerable.Where (names, n => n.Length >= 4); // 字符长度大于等于4的名字扩展方法:string[] names = { &q 阅读全文