public void TestConstructors()
{
string nullString = null;
DataTree <string> nullDataTree = null;
//default
var a_val_default = new DataTree <int>();
var a_ref_default = new DataTree <string>();
//.(T value) - value
var b_val_value = new DataTree <int>(1);
var b_ref_value = new DataTree <string>("1");
var b_ref_value1 = new DataTree <string>(nullString);
var b_ref_value2 = new DataTree <string>(string.Empty);
//.(DataTree<T> node) - node
var c_val_value = new DataTree <int>(b_val_value);
var c_ref_value = new DataTree <string>(b_ref_value);
var c_ref_value1 = new DataTree <string>(b_ref_value1);
var c_ref_value2 = new DataTree <string>(b_ref_value2);
var c_ref_value3 = new DataTree <string>(nullDataTree);
//.(T value, DataTree<T> node) - value_node
var d_ref_value = new DataTree <string>("3", b_ref_value);
var d_ref_value1 = new DataTree <string>(nullString, b_ref_value);
var d_ref_value2 = new DataTree <string>(nullString, nullDataTree);
var d_ref_value3 = new DataTree <string>("3", nullDataTree);
var d_ref_value4 = new DataTree <string>("3.1", d_ref_value);
d_ref_value4.Add(d_ref_value);
d_ref_value4.Add(d_ref_value);
d_ref_value4.Add(d_ref_value4);// todo: loop handling
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
string s;
for (int i = 0; i < 100; i++)
{
s = d_ref_value4.ToString("\n", "+");
//s = d_ref_value4.AsString();
}
stopwatch.Stop();
var elapsed = stopwatch.ElapsedMilliseconds;
Console.WriteLine(elapsed);
string ss = d_ref_value4.AsString();
}