/// <summary>
/// Returns a writable clone of this collection.
/// </summary>
public BTreeList <T> Clone()
{
BTreeList <T> copy = (BTreeList <T>)MemberwiseClone();
copy._first = copy._last = null;
copy._root = copy._root.Clone(ref copy._first, ref copy._last);
copy._isReadOnly = false;
return(copy);
}
/// <summary>
/// Returns a read-only clone of this collection. If this instance is already read-only the method will return this.
/// </summary>
public BTreeList <T> MakeReadOnly()
{
if (_isReadOnly)
{
return(this);
}
BTreeList <T> copy = Clone();
copy._isReadOnly = true;
return(copy);
}