isCancelable

1 struct A
2 {
3     bool isDisposed() @property
4     {
5         return true;
6     }
7 
8     void dispose()
9     {
10     }
11 }
12 
13 class B
14 {
15     bool isDisposed() @property
16     {
17         return true;
18     }
19 
20     void dispose()
21     {
22     }
23 }
24 
25 interface C
26 {
27     bool isDisposed() @property;
28     void dispose();
29 }
30 
31 static assert(isCancelable!A);
32 static assert(isCancelable!B);
33 static assert(isCancelable!C);