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MaxByExtensionMaxByTSource, TKey Method (IEnumerableTSource, FuncTSource, TKey, IComparerTKey)

MaxByExtensionMaxByTSource, TKey Method (IEnumerableTSource, FuncTSource, TKey, IComparerTKey)

Returns the maximal elements of the given sequence, based on the given projection and the specified comparer for projected values.

Namespace: MoreLinq.Extensions
Assembly:

MoreLinq (in MoreLinq.dll) Version: 3.0.0

Syntax

public static IExtremaEnumerable<TSource> MaxBy<TSource, TKey>(
	this IEnumerable<TSource> source,
	Func<TSource, TKey> selector,
	IComparer<TKey> comparer
)

<ExtensionAttribute>
Public Shared Function MaxBy(Of TSource, TKey) ( 
	source As IEnumerable(Of TSource),
	selector As Func(Of TSource, TKey),
	comparer As IComparer(Of TKey)
) As IExtremaEnumerable(Of TSource)

public:
[ExtensionAttribute]
generic<typename TSource, typename TKey>
static IExtremaEnumerable<TSource>^ MaxBy(
	IEnumerable<TSource>^ source, 
	Func<TSource, TKey>^ selector, 
	IComparer<TKey>^ comparer
)

[<ExtensionAttribute>]
static member MaxBy : 
        source : IEnumerable<'TSource> * 
        selector : Func<'TSource, 'TKey> * 
        comparer : IComparer<'TKey> -> IExtremaEnumerable<'TSource>

Parameters

source: Type: System.Collections.GenericIEnumerableTSource
Source sequence
selector: Type: SystemFuncTSource, TKey
Selector to use to pick the results to compare
comparer: Type: System.Collections.GenericIComparerTKey
Comparer to use to compare projected values

Type Parameters

TSource: Type of the source sequence
TKey: Type of the projected element

Return Value

Type:

IExtremaEnumerableTSource

The maximal element, according to the projection.

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)

Extension Methods (C# Programming Guide)

Exceptions Remarks

This operator uses deferred execution. The results are evaluated and cached on first use to returned sequence.

See Also

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