bool overlaps(SortedSet <T> that)
{
using (var t = that.GetEnumerator()) {
if (!t.MoveNext())
{
return(false);
}
foreach (T item in this)
{
int cmp;
while ((cmp = Comparer.Compare(item, t.Current)) > 0)
{
if (!t.MoveNext())
{
return(false);
}
}
if (cmp == 0)
{
return(true);
}
}
return(false);
}
}
public bool SetEquals(IEnumerable <T> other)
{
CheckArgumentNotNull(other, "other");
if (Count == 0)
{
#pragma warning disable 0219
foreach (T item in other)
{
return(false);
}
#pragma warning restore 0219
return(true);
}
SortedSet <T> that = nodups(other);
if (Count != that.Count)
{
return(false);
}
using (var t = that.GetEnumerator()) {
foreach (T item in this)
{
if (!t.MoveNext())
{
throw new SystemException("count wrong somewhere: this longer than that");
}
if (Comparer.Compare(item, t.Current) != 0)
{
return(false);
}
}
if (t.MoveNext())
{
throw new SystemException("count wrong somewhere: this shorter than that");
}
return(true);
}
}
