public bool IsProperSubsetOf(
	IEnumerable<long> other
)

Public Function IsProperSubsetOf ( 
	other As IEnumerable(Of Long)
) As Boolean

public:
virtual bool IsProperSubsetOf(
	IEnumerable<long long>^ other
) sealed

abstract IsProperSubsetOf : 
        other : IEnumerable<int64> -> bool 
override IsProperSubsetOf : 
        other : IEnumerable<int64> -> bool