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EqualityComparer<T>.Create Method

Definition

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

The new comparer.

Exceptions

The equals delegate was null.

Applies to