public MSet <T> With(T item)
{
var set = _set.CloneFreeze();
if (set.Add(ref item, Comparer, false))
{
return(new MSet <T>(set, _comparer, _count + 1));
}
return(this);
}
internal MapOrMMap(InternalSet <KeyValuePair <K, V> > set, IEqualityComparer <K> keyComparer, int count)
{
_set = set;
_keyComparer = keyComparer;
_count = count;
_set.CloneFreeze();
}
internal Set(InternalSet <T> set, IEqualityComparer <T> comparer, int count)
{
Debug.Assert(count >= 0);
_set = set;
_comparer = comparer;
_count = count;
set.CloneFreeze();
}
public Set(IEnumerable <T> list, IEqualityComparer <T> comparer)
{
_set = new InternalSet <T>();
_comparer = comparer;
_count = 0;
if (list != null)
{
_count = _set.UnionWith(list, comparer, false);
_set.CloneFreeze();
}
if (comparer == null && !_set.HasRoot)
{
// give it a root so that Comparer does not change _comparer
_set = InternalSet <T> .Empty;
}
}