Grouping.Group<T>(IList<T>, IEqualityComparer<T>) Method

Returns a grouping by the unique elements in a list using the specified comparer to determine equality.

Definition

Namespace: Extreme.DataAnalysis
Assembly: Extreme.Numerics (in Extreme.Numerics.dll) Version: 8.1.23

C#

public static Grouping<T> Group<T>(
	this IList<T> keys,
	IEqualityComparer<T> comparer
)

Visual Basic

<ExtensionAttribute>
Public Shared Function Group(Of T) ( 
	keys As IList(Of T),
	comparer As IEqualityComparer(Of T)
) As Grouping(Of T)

C++/CLI

public:
[ExtensionAttribute]
generic<typename T>
static Grouping<T>^ Group(
	IList<T>^ keys, 
	IEqualityComparer<T>^ comparer
)

F#

[<ExtensionAttribute>]
static member Group : 
        keys : IList<'T> * 
        comparer : IEqualityComparer<'T> -> Grouping<'T>

Parameters

keys IList<T>: A list.
comparer IEqualityComparer<T>: The comparer used to determine whether two keys are equal.

Type Parameters

T: The type of the elements of the list.

Return Value

Grouping<T>
A grouping of the elements of keys and indexed by the unique elements in keys.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IList<T>. 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).

See Also

Reference

Extreme.DataAnalysis Namespace