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ISet<T>.IsProperSubsetOf(IEnumerable<T>) Method

Definition

Determines whether the current set is a proper (strict) subset of a specified collection.

public:
 bool IsProperSubsetOf(System::Collections::Generic::IEnumerable<T> ^ other);
public bool IsProperSubsetOf (System.Collections.Generic.IEnumerable<T> other);
abstract member IsProperSubsetOf : seq<'T> -> bool
Public Function IsProperSubsetOf (other As IEnumerable(Of T)) As Boolean

Parameters

other
IEnumerable<T>

The collection to compare to the current set.

Returns

true if the current set is a proper subset of other; otherwise, false.

Exceptions

other is null.

Remarks

If the current set is a proper subset of other, other must have at least one element that the current set does not have.

An empty set is a proper subset of any other collection. Therefore, this method returns true if the current set is empty, unless the other parameter is also an empty set.

This method always returns false if the current set has more or the same number of elements than other.

Applies to