public object Peek(int back)
{
if (back < 0)
{
throw new ArgumentException("value cannot be a negative number", nameof(back));
}
if (back == 0)
{
return(_item);
}
return(_children.Peek(--back));
}
public object Peek(int back)
{
if (back >= _depth)
{
throw new ArgumentException("value must be < ScopeChain.Depth", nameof(back));
}
if (back < 0)
{
throw new ArgumentException("value cannot be a negative number", nameof(back));
}
if (_links == null)
{
throw new MergeException("cannot 'Peek' scope link, the chain is empty");
}
return(_links.Peek(back));
}