Function merklebtree::iterator::last

pub fn last<T>(btree_iterator: &mut btree_iterator<T>) -> bool where
    T: PartialEq + PartialOrd + Ord + Clone + Debug + CalculateHash, 

Last moves the iterator to the last element and returns true if there was a last element in the container. If Last() returns true, then last element's key and value can be retrieved by Key() and Value(). Modifies the state of the iterator.