/// <summary>
/// Provides an implementation of <see cref="ISet{T}.IsSupersetOf"/>.
/// </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}.IsSupersetOf"/>.</returns>
/// <remarks>
/// <para>
/// From <see href="https://msdn.microsoft.com/en-us/library/dd382354(v=vs.110).aspx"/>;
/// Determines whether the current set is a superset of a specified collection.
/// </para><para>
/// If other contains the same elements as the current set, the current set is still considered
/// a superset of other.
/// </para><para>
/// This method always returns false if the current set has fewer elements than other.
/// </para>
/// </remarks>
public static bool IsSupersetOf <T>(ISet <T> source, IEnumerable <T> other)
{
Contracts.Requires.That(source != null);
ISetContracts.IsSupersetOf(other);
ICollection <T> otherCollection = other as ICollection <T>;
if (otherCollection != null && source.Count < otherCollection.Count)
{
return(false);
}
return(other.All(source.Contains));
}
/// <inheritdoc />
public bool IsSupersetOf(IEnumerable <IDisposable> other)
{
ISetContracts.IsSupersetOf(other);
return(this.disposables.IsSupersetOf(other));
}
