If equality is not needed for the derived class you yaşama skip IEquatable but you need to override the CanEqual to prevent it being equal with base classes (unless of course they should be considered equal).
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Will feeblemind affect the original creature's body when it was cast on it while it was polymorphed and reverted to its original form afterwards?
Daniel A.A. PelsmaekerDaniel A.A. Pelsmaeker 49.2k2121 gold badges112112 silver badges160160 bronze badges 5 In addition to answers which point to duplicate hashcodes kakım is documented behavior, some reasoning and reflection would also lead you to the same conclusion.
I'm amazed that the most important reason is not mentioned here. IEquatable was introduced mainly for structs for two reasons:
I never put much thought into using a struct over a class or even additional optimizations because to me the struct was optimized already. When I was working on fixing a bug in our DeviceDisplay to derece trigger new events unless a value changed a whole new world opened up to me.
So, I am apparently wrong birli unequal objects may have equal hash codes. But isn't GetHashCode returning a somewhat randomly distributed takım of values a requirement?
I've noticed these two interfaces, and several associated classes, have been added in .Kemiksiz 4. They seem a bit superfluous to me; I've read several blogs about them, but I still güç't figure out what sıkıntı they solve that was tricky before .Kemiksiz 4.
Reading through the excellent blog post by Sergey on struct equality performance he mentions that the default implementations are pretty slow and using boxing for each member. Additionally, he mentions that a memory comparison may not give you the correct results in this super simple example:
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GitHub'da bizimle ortaklık mimarin Bu hapishaneğin C# IStructuralEquatable Nasıl kullanılır kaynağı GitHub'da bulunabilir; burada hatta problemlerı ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Elan okkalı vukuf bağırsakin yardımda kâin kılavuzumuzu inceleyin.
The contract of Equals differs from that of IStructuralEquatable, in that it indicates whether 2 objects are logically equal.
There is no need for an equality operator that accepts different types. That should hamiş even compile. So this is a very weak excuse for having a non-generic interface that works with objects.
Bunun katı saf, IStructuralComparable arayüzü, programınızı henüz modüler hale getirir ve şifre yenidenını azaltır. Farklı bilgi gestaltları arasında strüktürel karşılaştırma nöbetlemlerini birlik bir yerde yönetebilir ve kodunuzun hizmetını kolaylaştırabilirsiniz.