XEqualityComparerByT, TKey Method

Creates an equality comparer based on the specified comparison key and key comparer.

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

Syntax

Copy

public static IEqualityComparer<T> By<T, TKey>(
	Func<T, TKey> keySelector,
	IEqualityComparer<TKey>? keyComparer = null
)

Public Shared Function By(Of T, TKey) ( 
	keySelector As Func(Of T, TKey),
	Optional keyComparer As IEqualityComparer(Of TKey) = Nothing
) As IEqualityComparer(Of T)

static member By : 
        keySelector : Func<'T, 'TKey> * 
        ?keyComparer : IEqualityComparer<'TKey> 
(* Defaults:
        let _keyComparer = defaultArg keyComparer null
*)
-> IEqualityComparer<'T>

Parameters

keySelector: Type: SystemFuncT, TKey
A function that returns the comparison key.
keyComparer (Optional): Type: System.Collections.GenericIEqualityComparerTKey
An optional comparer used to test the keys for equality.

Type Parameters

T: The type of the objects to test for equality.
TKey: The type of the comparison key.

Return Value

Type: IEqualityComparerT
An equality comparer based on the specified comparison key and key comparer.

Reference

XEqualityComparer Class

Linq.Extras Namespace

XEqualityComparerAddLanguageSpecificTextSet("LSTEE98BCE3_0?cpp=::|nu=.");ByAddLanguageSpecificTextSet("LSTEE98BCE3_1?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");T, TKeyAddLanguageSpecificTextSet("LSTEE98BCE3_2?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)"); Method

Parameters

Type Parameters

Return Value

Reference

XEqualityComparerByT, TKey Method