EqualityComparer<T>.Create Method

Definition

Namespace:

System.Collections.Generic

Assembly:

System.Collections.dll

Source:

EqualityComparer.cs

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.