关于Action<T>、Func<Tin,Tout> 委托的常见写法

整理后记下来，备忘：

            dynamic dynEo = new ExpandoObject();
            // 运行时属性
            dynEo.number = 10;


            // 运行时方法
            dynEo.Increment = new Action(() => {
                dynEo.number++;
            });
            //dynEo.Increment = (Action)(() => {
//    dynEo.number++;
//});

// 传入参数int,不返回
            dynEo.IncrementWithPara = new Action<int>(p => {
                dynEo.number += p;
            });
            dynEo.IncrementWithPara = (Action<int>)(p => {
                dynEo.number += p;
            });


            // 不传入参数,返回decimal
            dynEo.GetIncrement = (Func<decimal>)(() => {
                return ((decimal)dynEo.number) / 2;
            });

            // 传入参数int,并返回decimal
            dynEo.GetIncrement = (Func<int, decimal>)(p =>
                                                           {
                                                               if (p == 0)
                                                                   return 0;
                                                               return ((decimal)dynEo.number)/p;
                                                           }
                                                      );
            // 等同于：
//dynEo.GetIncrement = new Func<int, decimal>(p => {
//                                       if (p == 0)
//                                           return 0;
//                                       return dynEo.number / p;
//                                   }
//                              );