EqualityComparer<T>.Create Method

Reference

Definition

Namespace:: System.Collections.Generic

Assembly:: System.Collections.dll

Source:: EqualityComparer.cs

Source:: EqualityComparer.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Creates an EqualityComparer<T> by using the specified delegates as the implementation of the comparer's Equals(T, T) and GetHashCode(T) methods.

public static System.Collections.Generic.EqualityComparer<T> Create (Func<T?,T?,bool> equals, Func<T,int>? getHashCode = default);

static member Create : Func<'T, 'T, bool> * Func<'T, int> -> System.Collections.Generic.EqualityComparer<'T>

Public Shared Function Create (equals As Func(Of T, T, Boolean), Optional getHashCode As Func(Of T, Integer) = Nothing) As EqualityComparer(Of T)

Parameters

equals: Func<T,T,Boolean>

The delegate to use to implement the Equals(T, T) method.

getHashCode: Func<T,Int32>

The delegate to use to implement the GetHashCode(T) method. If no delegate is supplied, calls to the resulting comparer's GetHashCode(T) will throw NotSupportedException.

Returns

EqualityComparer<T>

The new comparer.

Exceptions

ArgumentNullException

The equals delegate was null.

Applies to

Dela via