VelocityDbHashSetTIsProperSupersetOf Method

Checks if this is a proper superset of other (i.e. other strictly contained in this) Implementation Notes: This is slightly more complicated than above because we have to keep track if there was at least one element not contained in other. The following properties are used up-front to avoid element-wise checks: 1. If this is the empty set, then it can't be a proper superset of any set, even if other is the empty set. 2. If other is an empty set and this contains at least 1 element, then this is a proper superset. 3. If other has unique elements according to this equality comparer, and other's count is greater than or equal to this count, then this can't be a proper superset Furthermore, if other has unique elements according to this equality comparer, we can use a faster element-wise check.

public bool IsProperSupersetOf(
	IEnumerable<T> other
)

Public Function IsProperSupersetOf ( 
	other As IEnumerable(Of T)
) As Boolean

public:
bool IsProperSupersetOf(
	IEnumerable<T>^ other
)

member IsProperSupersetOf : 
        other : IEnumerable<'T> -> bool