25     type Strong;  typedef
35     fn view(&self) -> Option<Self::Strong>;  in view()
71     fn with_key<F, R>(view: &Self::Strong, f: F) -> R  in with_key()
76     type Strong = rc::Rc<T>;  typedef
82     fn view(&self) -> Option<Self::Strong> {  in view()
86     fn clone(view: &Self::Strong) -> Self::Strong {  in clone()
94     fn with_key<F, R>(view: &Self::Strong, f: F) -> R  in with_key()
102     type Strong = sync::Arc<T>;  typedef
108     fn view(&self) -> Option<Self::Strong> {  in view()
112     fn clone(view: &Self::Strong) -> Self::Strong {  in clone()
121     fn with_key<F, R>(view: &Self::Strong, f: F) -> R  in with_key()