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)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function DistinctUntilChanged(Of TSource) ( _
source As IQbservable(Of TSource), _
comparer As IEqualityComparer(Of TSource) _
) As IQbservable(Of TSource)
'Usage
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
)
[ExtensionAttribute]
public:
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.
Parameters
- source
Type: System.Reactive.Linq.IQbservable<TSource>
A queryable observable sequence to retain distinct contiguous elements for.
- comparer
Type: System.Collections.Generic.IEqualityComparer<TSource>
The equality comparer for computed key values.
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 .