/// <summary>
/// Remove empty rows from the given Trie and return the newly reduced Trie.
/// </summary>
/// <param name="by">the <see cref="Trie"/> to reduce</param>
/// <returns>the newly reduced Trie</returns>
public override Trie Reduce(Reduce by)
{
List <Trie> h = new List <Trie>();
foreach (Trie trie in m_tries)
{
h.Add(trie.Reduce(by));
}
MultiTrie2 m = new MultiTrie2(forward);
m.m_tries = h;
return(m);
}
/// <summary>
/// Remove empty rows from the given <see cref="Trie"/> and return the newly reduced <see cref="Trie"/>.
/// </summary>
/// <param name="by">the <see cref="Trie"/> to reduce</param>
/// <returns>newly reduced <see cref="Trie"/></returns>
public virtual Trie Reduce(Reduce by)
{
return(by.Optimize(this));
}