isSubscribable

1 struct TestDisposable
2 {
3     void dispose()
4     {
5     }
6 }
7 
8 struct TestObserver
9 {
10     void put(int n)
11     {
12     }
13 
14     void completed()
15     {
16     }
17 
18     void failure(Exception e)
19     {
20     }
21 }
22 
23 struct TestObservable
24 {
25     alias ElementType = int;
26 
27     TestDisposable subscribe(TestObserver observer)
28     {
29         return TestDisposable();
30     }
31 }
32 
33 static assert(isSubscribable!(TestObservable, TestObserver));