/// <summary> /// Provides an implementation of <see cref="ISet{T}.IsProperSubsetOf" />. /// </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}.IsProperSubsetOf" />.</returns> /// <remarks> /// <para> /// From <see href="https://msdn.microsoft.com/en-us/library/dd321100(v=vs.110).aspx" />; /// Determines whether the current set is a proper (strict) subset of a specified collection. /// </para> /// <para> /// If the current set is a proper subset of other, other must have at least one element that the current /// set does not have. /// </para> /// <para> /// 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. /// </para> /// <para> /// This method always returns false if the current set has more or the same number of elements than other. /// </para></remarks> public static bool IsProperSubsetOf <T>(ISet <T> source, IEnumerable <T> other, IEqualityComparer <T> comparer) { Contracts.Requires.That(source != null); Contracts.Requires.That(comparer != null); ISetContracts.IsProperSubsetOf(other); return(IsProperSubsetOf(source, other as HashSet <T> ?? new HashSet <T>(other, comparer))); }
/// <summary> /// Provides an implementation of <see cref="ISet{T}.IsProperSubsetOf"/>. /// </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}.IsProperSubsetOf"/>.</returns> /// <remarks> /// <para> /// From <see href="https://msdn.microsoft.com/en-us/library/dd321100(v=vs.110).aspx"/>; /// Determines whether the current set is a proper (strict) subset of a specified collection. /// </para><para> /// If the current set is a proper subset of other, other must have at least one element that the current /// set does not have. /// </para><para> /// 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. /// </para><para> /// This method always returns false if the current set has more or the same number of elements than other. /// </para> /// </remarks> public static bool IsProperSubsetOf <T>(ISet <T> source, HashSet <T> other) { Contracts.Requires.That(source != null); ISetContracts.IsProperSubsetOf(other); if (source.Count >= other.Count) { return(false); } return(other.IsProperSupersetOf(source)); }
/// <inheritdoc /> public bool IsProperSubsetOf(IEnumerable <IDisposable> other) { ISetContracts.IsProperSubsetOf(other); return(this.disposables.IsProperSubsetOf(other)); }