EqualityComparer<T>.GetHashCode(T) Method

Reference

Definition

Namespace:: System.Collections.Generic

Assembly:: System.Collections.dll

Assembly:: mscorlib.dll

Assembly:: netstandard.dll

Source:: EqualityComparer.CoreCLR.cs

Source:: EqualityComparer.CoreCLR.cs

Source:: EqualityComparer.CoreCLR.cs

Important

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When overridden in a derived class, serves as a hash function for the specified object for hashing algorithms and data structures, such as a hash table.

public:
 abstract int GetHashCode(T obj);

public abstract int GetHashCode (T obj);

override this.GetHashCode : 'T -> int

Public MustOverride Function GetHashCode (obj As T) As Integer

Parameters

obj: T

The object for which to get a hash code.

Returns

Int32

A hash code for the specified object.

Implements

GetHashCode(T)

Exceptions

ArgumentNullException

The type of obj is a reference type and obj is null.

Notes to Implementers

Implementations are required to ensure that if the Equals(T, T) method returns true for two objects x and y, then the value returned by the GetHashCode(T) method for x must equal the value returned for y.

Applies to