public bool Contains(KeyValuePair <K, V> item)
{
N node = _redBlackTree.Find(item.Key);
if (node == null)
{
return(false);
}
if (ReferenceEquals(node.Value, null))
{
return(ReferenceEquals(item.Value, null));
}
return(node.Value.Equals(item.Value));
}
public N Find(K key)
{
if (Compare(key, Minimum) < 0 || Compare(key, Maximum) > 0)
{
return(null);
}
return(_redBlackTree.Find(key));
}