| NSAssert([self.delegate conformsToProtocol: @protocol(UISearchBarDelegate)], @"Some Error."); | |
| Protocol *counter = @protocol(ReferenceCounting); | |
| @protocol ReferenceCounting | |
| -setRefCount: (int)count; | |
| -(int)refCount; | |
| -incrementCount; | |
| -decrementCount; | |
| @end | |
| @interface Formatter : NSObject<Formatting, Prettifying> | |
| @end | |
| if ([receiver conformsTo: @protocol(ReferenceCounting)]) | |
| { | |
| [receiver incrementCount]; | |
| } | |
| @protocol B; | |
| @protocol A | |
| -Foo: (id<B> )anObject; | |
| @end |