Qbservable.DistinctUntilChanged(Of TSource) Method (IQbservable(Of TSource))

Returns a queryable observable sequence that contains only distinct contiguous elements with a specified source.

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

'Declaration
<ExtensionAttribute> _
Public Shared Function DistinctUntilChanged(Of TSource) ( _
	source As IQbservable(Of TSource) _
) As IQbservable(Of TSource)
'Usage
Dim source As IQbservable(Of TSource)
Dim returnValue As IQbservable(Of TSource)

returnValue = source.DistinctUntilChanged()

Type Parameters

TSource

The type of source.

Parameters

source
Type: System.Reactive.Linq.IQbservable(Of TSource)
A queryable observable sequence to retain distinct contiguous elements for.

Return Value

Type: System.Reactive.Linq.IQbservable(Of 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(Of TSource). When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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