RACSubscriber 協(xié)議
RACSubscriber協(xié)議方法
@protocol RACSubscriber <NSObject>
@required //必須實(shí)現(xiàn)的
1. - (void)sendNext:(nullable id)value; // 向訂閱者(subscribers) 發(fā)送的值 (value)
2. - (void)sendError:(nullable NSError *)error;
3. - (void)sendCompleted;
4. - (void)didSubscribeWithDisposable:(RACCompoundDisposable *)disposable;
@end
