MoreEnumerable.ToLookup<TKey, TValue> Method (IEnumerable<ValueTuple`2<TKey, TValue>>)

Creates a Lookup from a sequence of tuples of 2 where the first item is the key and the second the value.

Namespace: MoreLinq
Assembly: MoreLinq (in MoreLinq.dll) Version: 2.7.0

Syntax

public static ILookup<TKey, TValue> ToLookup<TKey, TValue>(
	this IEnumerable<ValueTuple<TKey, TValue>> source
)

<ExtensionAttribute>
Public Shared Function ToLookup(Of TKey, TValue) ( 
	source As IEnumerable(Of ValueTuple(Of TKey, TValue))
) As ILookup(Of TKey, TValue)

public:
[ExtensionAttribute]
generic<typename TKey, typename TValue>
static ILookup<TKey, TValue>^ ToLookup(
	IEnumerable<ValueTuple<TKey, TValue>>^ source
)

[<ExtensionAttribute>]
static member ToLookup : 
        source : IEnumerable<ValueTuple<'TKey, 'TValue>> -> ILookup<'TKey, 'TValue>

Parameters

source: Type: System.Collections.Generic.IEnumerable<ValueTuple<TKey, TValue>>
The source sequence of tuples of 2.

Type Parameters

TKey: The type of the key.
TValue: The type of the value.

Return Value

Type: ILookup<TKey, TValue>
A Lookup containing the values mapped to their keys.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<ValueTuple<TKey, TValue>>. 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

MoreEnumerable Class

ToLookup Overload

MoreLinq Namespace