RunLengthEncodeExtensionRunLengthEncodeT Method (IEnumerableT, IEqualityComparerT)

Run-length encodes a sequence by converting consecutive instances of the same element into a KeyValuePair{T,int} representing the item and its occurrence count. This overload uses a custom equality comparer to identify equivalent items.

Namespace: MoreLinq.Extensions
Assembly: MoreLinq (in MoreLinq.dll) Version: 3.0.0

Syntax

C++

Copy

public static IEnumerable<KeyValuePair<T, int>> RunLengthEncode<T>(
	this IEnumerable<T> sequence,
	IEqualityComparer<T> comparer
)

<ExtensionAttribute>
Public Shared Function RunLengthEncode(Of T) ( 
	sequence As IEnumerable(Of T),
	comparer As IEqualityComparer(Of T)
) As IEnumerable(Of KeyValuePair(Of T, Integer))

public:
[ExtensionAttribute]
generic<typename T>
static IEnumerable<KeyValuePair<T, int>>^ RunLengthEncode(
	IEnumerable<T>^ sequence, 
	IEqualityComparer<T>^ comparer
)

[<ExtensionAttribute>]
static member RunLengthEncode : 
        sequence : IEnumerable<'T> * 
        comparer : IEqualityComparer<'T> -> IEnumerable<KeyValuePair<'T, int>>

Parameters

sequence: Type: System.Collections.GenericIEnumerableT
The sequence to run length encode
comparer: Type: System.Collections.GenericIEqualityComparerT
The comparer used to identify equivalent items

Type Parameters

T: The type of the elements in the sequence

Return Value

Type: IEnumerableKeyValuePairT, Int32
A sequence of KeyValuePair{T,int} where they key is the element and the value is the occurrence count

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableT. 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

RunLengthEncodeExtension Class

RunLengthEncode Overload

MoreLinq.Extensions Namespace