Qbservable.DistinctUntilChanged<TSource> Method (IQbservable<TSource>, IEqualityComparer<TSource>)

Returns a queryable observable sequence that contains only distinct contiguous elements according to the comparer.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive.Providers (in System.Reactive.Providers.dll)


<ExtensionAttribute> _
Public Shared Function DistinctUntilChanged(Of TSource) ( _
    source As IQbservable(Of TSource), _
    comparer As IEqualityComparer(Of TSource) _
) As IQbservable(Of TSource)
Dim source As IQbservable(Of TSource)
Dim comparer As IEqualityComparer(Of TSource)
Dim returnValue As IQbservable(Of TSource)

returnValue = source.DistinctUntilChanged(comparer)
public static IQbservable<TSource> DistinctUntilChanged<TSource>(
    this IQbservable<TSource> source,
    IEqualityComparer<TSource> comparer
generic<typename TSource>
static IQbservable<TSource>^ DistinctUntilChanged(
    IQbservable<TSource>^ source, 
    IEqualityComparer<TSource>^ comparer
static member DistinctUntilChanged : 
        source:IQbservable<'TSource> * 
        comparer:IEqualityComparer<'TSource> -> IQbservable<'TSource> 
JScript does not support generic types and methods.

Type Parameters

  • TSource
    The type of source.


Return Value

Type: System.Reactive.Linq.IQbservable<TSource>
A queryable observable sequence only containing the distinct contiguous elements from the source sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see or .

See Also


Qbservable Class

DistinctUntilChanged Overload

System.Reactive.Linq Namespace