/// <summary>
/// Makes so that the set contains only the elements that are also in this collection
/// </summary>
public void IntersectWith(IEnumerable <T> collection)
{
var intersectSet = new GenericSet <T>();
foreach (var item in collection)
{
if (Contains(item))
{
intersectSet.Add(item);
}
}
this.head = intersectSet.head;
this.Count = intersectSet.Count;
intersectSet.Clear();
}
/// <summary>
/// Checks if the set is a proper subset of given collection
/// </summary>
public bool IsProperSubsetOf(IEnumerable <T> collection)
{
var newSet = new GenericSet <T>();
foreach (var item in collection)
{
newSet.Add(item);
}
foreach (var element in this)
{
if (!newSet.Contains(element))
{
return(false);
}
}
return(newSet.Count > Count);
}