public static Knot <T> ToKnot <T>(this IEnumerable <T> source)
{
var result = new Knot <T>(source.First());
foreach (var item in source.Skip(1))
{
result.Add(item);
}
return(result);
}
public static Knot <TItem> GetUnique <TItem>(this Knot <TItem> source)
{
var result = new Knot <TItem>();
var current = source.Start;
var history = new List <TItem>();
while (current != null)
{
if (!history.Contains(current.Data))
{
result.Add(current.Data);
history.Add(current.Data);
}
current = current.Next;
}
return(result.Count() > 0 ? result : null);
}