/// <summary>
/// Computes the intersection between this other and the specified other.
/// </summary>
/// <param name="set">The other.</param>
/// <returns>The result of the intersection operation.</returns>
/// <exception cref="ArgumentNullException"><paramref name="set"/> is a null reference (<c>Nothing</c> in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="set"/> is not in the same universe as this instance.</exception>
/// <example>
/// <code source="..\..\NGenerics.Examples\DataStructures\General\PascalSetExamples.cs" region="Intersection" lang="cs" title="The following example shows how to use the Intersection method."/>
/// </example>
public PascalSet Intersection(PascalSet set)
{
#region Validation
Guard.ArgumentNotNull(set, "other");
CheckIfUniverseTheSame(set);
#endregion
return(new PascalSet(data.And(set.data), lowerBound, upperBound));
}
/// <summary>
/// Determines whether this set is a proper subset of the specified set.
/// </summary>
/// <param name="set">The set to be compared against.</param>
/// <returns>
/// <c>true</c> if this is a proper subset of the specified set; otherwise, <c>false</c>.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="set"/> is a null reference (<c>Nothing</c> in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="set"/> is not in the same universe as this instance.</exception>
/// <example>
/// <code source="..\..\Source\Examples\ExampleLibraryCSharp\DataStructures\General\PascalSetExamples.cs" region="IsProperSubsetOf" lang="cs" title="The following example shows how to use the IsProperSubsetOf method."/>
/// <code source="..\..\Source\Examples\ExampleLibraryVB\DataStructures\General\PascalSetExamples.vb" region="IsProperSubsetOf" lang="vbnet" title="The following example shows how to use the IsProperSubsetOf method."/>
/// </example>
public bool IsProperSubsetOf(PascalSet set)
{
#region Validation
Guard.ArgumentNotNull(set, "set");
CheckIfUniverseTheSame(set);
#endregion
// A is a proper subset of a if the b is a subset of a and a != b
return(IsSubsetOf(set) && !set.IsSubsetOf(this));
}
/// <summary>
/// Computes the difference between this set and the specified set.
/// </summary>
/// <param name="set">The set.</param>
/// <returns>The result of the difference operation.</returns>
/// <exception cref="ArgumentNullException"><paramref name="set"/> is a null reference (<c>Nothing</c> in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="set"/> is not in the same universe as this instance.</exception>
/// <example>
/// <code source="..\..\Source\Examples\ExampleLibraryCSharp\DataStructures\General\PascalSetExamples.cs" region="Subtract" lang="cs" title="The following example shows how to use the Subtract method."/>
/// <code source="..\..\Source\Examples\ExampleLibraryVB\DataStructures\General\PascalSetExamples.vb" region="Subtract" lang="vbnet" title="The following example shows how to use the Subtract method."/>
/// </example>
public PascalSet Subtract(PascalSet set)
{
#region Validation
Guard.ArgumentNotNull(set, "set");
CheckIfUniverseTheSame(set);
#endregion
return(new PascalSet(data.Xor(set.data), lowerBound, upperBound));
}
/// <inheritdoc />
public bool Equals(PascalSet other)
{
if ((other == null) || (!IsUniverseTheSame(other)))
{
return(false);
}
for (var i = 0; i < data.Length; i++)
{
if (data[i] != other.data[i])
{
return(false);
}
}
return(true);
}
/// <summary>
/// Determines whether this other is a subset of the specified other.
/// </summary>
/// <param name="set">The other to be compared against.</param>
/// <returns>
/// <c>true</c> if this other is a subset of the specified other]; otherwise, <c>false</c>.
/// </returns>
/// <exception cref="ArgumentNullException"><paramref name="set"/> is a null reference (<c>Nothing</c> in Visual Basic).</exception>
/// <exception cref="ArgumentException"><paramref name="set"/> is not in the same universe as this instance.</exception>
/// <example>
/// <code source="..\..\NGenerics.Examples\DataStructures\General\PascalSetExamples.cs" region="IsSubsetOf" lang="cs" title="The following example shows how to use the IsSubsetOf method."/>
/// </example>
public bool IsSubsetOf(PascalSet set)
{
#region Validation
Guard.ArgumentNotNull(set, "other");
CheckIfUniverseTheSame(set);
#endregion
for (var i = 0; i < data.Length; i++)
{
if (data[i] && !set.data[i])
{
return(false);
}
}
return(true);
}
/// <summary>
/// Determines whether [is universe the same] [the specified set].
/// </summary>
/// <param name="set">The set.</param>
/// <returns>
/// <c>true</c> if [is universe the same] [the specified set]; otherwise, <c>false</c>.
/// </returns>
private bool IsUniverseTheSame(PascalSet set)
{
return
((set.lowerBound == lowerBound) &&
(set.upperBound == upperBound));
}