![](https://cos-cdn.shuashuati.com/pipixue-wap/2020-1230-1107-56/ti_inject-812ce.png)
// 异步链式调用和注册回调的处理,下面代码执行的结果为: void main() { print("main start"); // 链式调用,可以跟多个then,注册多个回调 new Future((){ print("async task"); }).then((res){ print("async task complete"); }).then((res){ print("async task after"); }); print("main stop"); }
A.
main start async task async task complete async task after main stop
B.
main start main stop async task complete async task after async task
C.
main start async task complete async task after async task main stop
D.
main start main stop async task async task complete async task after