Function tetsy_reference_trie::calc_root_build

pub fn calc_root_build<I, A, B, DB>(
    data: I, 
    hashdb: &mut DB
) -> <KeccakHasher as Hasher>::Out where
    I: IntoIterator<Item = (A, B)>,
    A: AsRef<[u8]> + Ord + Debug,
    B: AsRef<[u8]> + Debug,
    DB: HashDB<KeccakHasher, DBValue>, 

Trie builder trie building utility.