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Eric Lippert's challenge

a guest Sep 10th, 2010 44 Never
  1. sealed class Dumper
  2. {
  3.     static public string Dump(Node root)
  4.     {
  5.         return root.Text + "\n" + DumpChildren( root, "" );
  6.     }
  7.     static private string DumpChildren(Node node, string indent)
  8.     {
  9.         return node.Children.Count > 0
  10.             ?   string.Join( "",  node.Children.Take(node.Children.Count - 1).ToList()
  11.                     .ConvertAll( new Converter<Node, String>( child => string.Format("{0}├─{1}\n{2}", indent, child.Text, DumpChildren(child, indent + "│ ") ) ) ).ToArray() )
  12.                 + string.Format("{0}└─{1}\n{2}", indent, node.Children.Last().Text, DumpChildren(node.Children.Last(), indent + "  ") )
  13.             : "";
  14.     }
  15. }
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