XEnumerableDistinctUntilChangedTSource Method

Returns a sequence with distinct adjacent elements from the input sequence based on the specified comparer.

Namespace: Linq.Extras
Assembly: Linq.Extras (in Linq.Extras.dll) Version: 5.0.0+96a4f4bfed64095342c5df107c1fe1fb95603ee5

Syntax

Copy

public static IEnumerable<TSource> DistinctUntilChanged<TSource>(
	this IEnumerable<TSource> source,
	IEqualityComparer<TSource>? comparer = null
)

<ExtensionAttribute>
Public Shared Function DistinctUntilChanged(Of TSource) ( 
	source As IEnumerable(Of TSource),
	Optional comparer As IEqualityComparer(Of TSource) = Nothing
) As IEnumerable(Of TSource)

[<ExtensionAttribute>]
static member DistinctUntilChanged : 
        source : IEnumerable<'TSource> * 
        ?comparer : IEqualityComparer<'TSource> 
(* Defaults:
        let _comparer = defaultArg comparer null
*)
-> IEnumerable<'TSource>

Parameters

source: Type: System.Collections.GenericIEnumerableTSource
The sequence to return distinct elements from.
comparer (Optional): Type: System.Collections.GenericIEqualityComparerTSource
A comparer used to test equality between elements (can be null).

Type Parameters

TSource: The type of the elements of source.

Return Value

Type: IEnumerableTSource
A sequence that contains only distinct adjacent elements

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

XEnumerable Class