/// <summary>
///
/// </summary>
/// <param name="source"></param>
/// <param name="dest"></param>
/// <returns></returns>
public static bool AddAll(ICollection source, HashedSet dest)
{
return(dest.AddAll(source));
}
Clear <T>(HashedSet <T> collection)
{
collection.Clear();
}
/// <summary>
///
/// </summary>
/// <param name="set"></param>
/// <returns></returns>
static public ISet UnmodifiableSet(ISet set)
{
return(HashedSet.ReadOnly(set));
}