/// <summary>
/// Provides an implementation of <see cref="ISet{T}.IsProperSupersetOf"/>.
/// </summary>
/// <typeparam name="T">The type of values in the collections.</typeparam>
/// <param name="source">The source collection that is implementing <see cref="ISet{T}"/>.</param>
/// <param name="other">The other enumerable.</param>
/// <param name="comparer">The comparer.</param>
/// <returns>The result of <see cref="ISet{T}.IsProperSupersetOf"/>.</returns>
/// <remarks>
/// <para>
/// From <see href="https://msdn.microsoft.com/en-us/library/dd411711(v=vs.110).aspx"/>;
/// Determines whether the current set is a proper (strict) superset of a specified collection.
/// </para><para>
/// If the current set is a proper superset of other, the current set must have at least one element
/// that other does not have.
/// </para><para>
/// An empty set is a proper superset of any other collection.Therefore, this method returns true if
/// the collection represented by the other parameter is empty, unless the current set is also empty.
/// </para><para>
/// This method always returns false if the number of elements in the current set is less than or equal
/// to the number of elements in other.
/// </para>
/// </remarks>
public static bool IsProperSupersetOf <T>(ISet <T> source, IEnumerable <T> other, IEqualityComparer <T> comparer)
{
Contracts.Requires.That(source != null);
Contracts.Requires.That(comparer != null);
ISetContracts.IsProperSupersetOf(other);
return(IsProperSupersetOf(source, other as HashSet <T> ?? new HashSet <T>(other, comparer)));
}
/// <summary>
/// Provides an implementation of <see cref="ISet{T}.IsProperSupersetOf"/>.
/// </summary>
/// <typeparam name="T">The type of values in the collections.</typeparam>
/// <param name="source">The source collection that is implementing <see cref="ISet{T}"/>.</param>
/// <param name="other">The other enumerable.</param>
/// <returns>The result of <see cref="ISet{T}.IsProperSupersetOf"/>.</returns>
/// <remarks>
/// <para>
/// From <see href="https://msdn.microsoft.com/en-us/library/dd411711(v=vs.110).aspx"/>;
/// Determines whether the current set is a proper (strict) superset of a specified collection.
/// </para><para>
/// If the current set is a proper superset of other, the current set must have at least one element
/// that other does not have.
/// </para><para>
/// An empty set is a proper superset of any other collection.Therefore, this method returns true if
/// the collection represented by the other parameter is empty, unless the current set is also empty.
/// </para><para>
/// This method always returns false if the number of elements in the current set is less than or equal
/// to the number of elements in other.
/// </para>
/// </remarks>
public static bool IsProperSupersetOf <T>(ISet <T> source, HashSet <T> other)
{
Contracts.Requires.That(source != null);
ISetContracts.IsProperSupersetOf(other);
if (source.Count <= other.Count)
{
return(false);
}
return(other.IsProperSubsetOf(source));
}
/// <inheritdoc />
public bool IsProperSupersetOf(IEnumerable <IDisposable> other)
{
ISetContracts.IsProperSupersetOf(other);
return(this.disposables.IsProperSupersetOf(other));
}
