pub fn calc_root_build<T, I, A, B, DB>( data: I, hashdb: &mut DB, ) -> <T::Hash as Hasher>::Outwhere T: TrieLayout, I: IntoIterator<Item = (A, B)>, A: AsRef<[u8]> + Ord + Debug, B: AsRef<[u8]> + Debug, DB: HashDB<T::Hash, DBValue>,
Trie builder trie building utility.