Method succ

src/tree/binary/bst.rs:54–56

(&self, key: &K)

    }

    fn succ(&self, key: &K) -> Option<&K> {
        unsafe { succ(self.root, key).map(|p| &p.as_ref().key) }
    }

    fn pred(&self, key: &K) -> Option<&K> {
        unsafe { pred(self.root, key).map(|p| &p.as_ref().key) }