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using System;
using System.Collections.Generic;
using System.Runtime.CompilerServices;
namespace StardewModdingAPI.Framework.StateTracking.Comparers
{
/// <summary>Compares instances using <see cref="IEqualityComparer{T}.Equals(T,T)"/>.</summary>
/// <typeparam name="T">The value type.</typeparam>
internal class EquatableComparer<T> : IEqualityComparer<T> where T : IEquatable<T>
{
/*********
** Public methods
*********/
/// <summary>Determines whether the specified objects are equal.</summary>
/// <returns>true if the specified objects are equal; otherwise, false.</returns>
/// <param name="x">The first object to compare.</param>
/// <param name="y">The second object to compare.</param>
public bool Equals(T? x, T? y)
{
if (x == null)
return y == null;
return x.Equals(y);
}
/// <summary>Get a hash code for the specified object.</summary>
/// <param name="obj">The value.</param>
public int GetHashCode(T obj)
{
return RuntimeHelpers.GetHashCode(obj);
}
}
}
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