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32 lines
1.4 KiB
C#
32 lines
1.4 KiB
C#
3 months ago
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// Animancer // Copyright 2020 Kybernetik //
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using System.Collections.Generic;
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namespace Animancer
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{
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/// <summary>
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/// An <see cref="IEqualityComparer{T}"/> which ignores overloaded equality operators so it is faster than
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/// <see cref="EqualityComparer{T}.Default"/> for types derived from <see cref="UnityEngine.Object"/>.
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/// </summary>
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public sealed class FastComparer : IEqualityComparer<object>
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{
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/************************************************************************************************************************/
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/// <summary>Singleton instance.</summary>
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public static readonly FastComparer Instance = new FastComparer();
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/// <summary>Calls <see cref="object.Equals(object, object)"/>.</summary>
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/// <remarks>
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/// We could use <see cref="object.ReferenceEquals"/> for slightly better performance, but that would not work
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/// for boxed value types (enums in particular).
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/// </remarks>
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bool IEqualityComparer<object>.Equals(object x, object y) { return Equals(x, y); }
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/// <summary>Calls <see cref="object.GetHashCode"/>.</summary>
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int IEqualityComparer<object>.GetHashCode(object obj) { return obj.GetHashCode(); }
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/************************************************************************************************************************/
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}
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}
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