If equality is hamiş 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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If you want to implement IEquatable in a class hierarchy you birey use the following pattern. It prevents derived (including sibling) classes from being equal.
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 bey is documented behavior, some reasoning and reflection would also lead you to the same conclusion.
It is used by the third example bey an argument to the Equals(Object, IEqualityComparer) method of the IStructuralEquatable interface that tuples implement. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.
comparer IEqualityComparer An object that determines whether the current instance and other are equal.
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We güç also make our own container play well with these other containers by implementing these interfaces.
The first issue we see here is that this struct is mutable in that you can actually change the data later on via the seki properties. There was no real reason that we introduced this except that we were used to it.
When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable kişi be useful.
To achieve this, employee objects with matching SSN properties would be treated kakım logically equal, even if they were not structurally equal. Share Improve this answer Follow
That is, you dirilik create your own definition of structural equality and specify that this definition be used with a collection C# IStructuralEquatable Kullanımı type that accepts the IStructuralEquatable interface. The interface has two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.
You observations does hamiş conflict with the documentation and there is no bug in the implementation.
Bunun yüzı esna, IStructuralComparable arayüzü, programınızı henüz modüler hale getirir ve şifre yenidenını azaltır. Farklı data kuruluşları beyninde yapısal karşıtlaştırma meselelemlerini birlik bir yerde yönetebilir ve kodunuzun hizmetını kolaylaştırabilirsiniz.