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)

static member DistinctUntilChanged : 
        source:IQbservable<'TSource> * 
        comparer:IEqualityComparer<'TSource> -> IQbservable<'TSource> 

Type Parameters


The type of source.


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