Method xget_ref

flow-message/src/cross/mod.rs:120–122

(&'a self, key: &Idx)

        Idx: ?Sized,
    {
        fn xget_ref(&'a self, key: &Idx) -> Option<U> {
            self.get_ref(key).map(|data| data::GetRef::get_ref(data))
        }
    }

    impl<'a, Idx, T, U> IndexGetMut<'a, Idx, U> for T