Modifies the current HashSet<(Of <(T>)>) object to contain only elements that are present either in that object or in the specified collection, but not both.
(in System.Core.dll)
Visual Basic (Declaration)
Public Sub SymmetricExceptWith ( _
other As IEnumerable(Of T) _
)
Dim instance As HashSet
Dim other As IEnumerable(Of T)
instance.SymmetricExceptWith(other)
public void SymmetricExceptWith(
IEnumerable<T> other
)
public:
void SymmetricExceptWith(
IEnumerable<T>^ other
)
public function SymmetricExceptWith(
other : IEnumerable<T>
)
| Exception | Condition |
|---|
| ArgumentNullException |
other is nullNothingnullptra null reference (Nothing in Visual Basic). |
If the other parameter is a HashSet<(Of <(T>)>) collection with the same equality comparer as the current HashSet<(Of <(T>)>) object, this method is an O(n) operation. Otherwise, this method is an O(n + m) operation, where n is the number of elements in other and m is Count.
The following example creates two HashSet<(Of <(T>)>) collections with overlapping sets of data. The set that contains the lower values is then modified, using the SymmetricExceptWith method, to contain only the values that are not present in both sets.
Shared Sub Main()
Dim lowNumbers As HashSet(Of Integer) = New HashSet(Of Integer)()
Dim highNumbers As HashSet(Of Integer) = New HashSet(Of Integer)()
For i As Integer = 0 To 5
lowNumbers.Add(i)
Next i
For i As Integer = 3 To 9
highNumbers.Add(i)
Next i
Console.Write("lowNumbers contains {0} elements: ", lowNumbers.Count)
DisplaySet(lowNumbers)
Console.Write("highNumbers contains {0} elements: ", highNumbers.Count)
DisplaySet(highNumbers)
Console.WriteLine("lowNumbers SymmetricExceptWith highNumbers...")
lowNumbers.SymmetricExceptWith(highNumbers)
Console.Write("lowNumbers contains {0} elements: ", lowNumbers.Count)
DisplaySet(lowNumbers)
End Sub
' This example produces output similar to the following:
' lowNumbers contains 6 elements: { 0 1 2 3 4 5 }
' highNumbers contains 7 elements: { 3 4 5 6 7 8 9 }
' lowNumbers SymmetricExceptWith highNumbers...
' lowNumbers contains 7 elements: { 0 1 2 8 7 6 9 }
static void Main()
{
HashSet<int> lowNumbers = new HashSet<int>();
HashSet<int> highNumbers = new HashSet<int>();
for (int i = 0; i < 6; i++)
{
lowNumbers.Add(i);
}
for (int i = 3; i < 10; i++)
{
highNumbers.Add(i);
}
Console.Write("lowNumbers contains {0} elements: ", lowNumbers.Count);
DisplaySet(lowNumbers);
Console.Write("highNumbers contains {0} elements: ", highNumbers.Count);
DisplaySet(highNumbers);
Console.WriteLine("lowNumbers SymmetricExceptWith highNumbers...");
lowNumbers.SymmetricExceptWith(highNumbers);
Console.Write("lowNumbers contains {0} elements: ", lowNumbers.Count);
DisplaySet(lowNumbers);
}
/* This example provides output similar to the following:
* lowNumbers contains 6 elements: { 0 1 2 3 4 5 }
* highNumbers contains 7 elements: { 3 4 5 6 7 8 9 }
* lowNumbers SymmetricExceptWith highNumbers...
* lowNumbers contains 7 elements: { 0 1 2 8 7 6 9 }
*/
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5
Reference