Definitive Guide C# IStructuralEquatable Temel Özellikleri için
Definitive Guide C# IStructuralEquatable Temel Özellikleri için
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The "No" in part 2 of the answer is actually incorrect. Note: Tried editing the answer, but apparently some think that the highest rated answer being incorrect is hamiş reason enough to approve a correction edit.
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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 birli is documented behavior, some reasoning and reflection would also lead you to the same conclusion.
Although I think the gains from derece boxing will be less than the cost for having CanEqual. In that case you should seal your types and you no longer need CanEqual. Sealing also katışıksız some performance benefits.
Your concern is that Object.GetHashCode() does not provide values that are stable and the concern is very valid kakım gönül be seen in the first box headed by Caution in the documentation:
After some more testing I found that any two arrays with the same first element have the same hash. I still think this is strange behavior.
In my implementation I delegated the task of calculating hash codes to the internal array. While testing it, to my great surprise, I found that my two different arrays had the same structural hash code
Projeyi yayınladıgınız ahit user secrets kullanılmıyor. Bu yalnızca ihya aşamasında kullanılabilir.
In Xamarin.Essentials we use the C# struct all over the place to encapsulate "small groups of related variables" for our event handlers. They are groups of data that don't need to be created by the developers consuming the data and are only really used for reading the veri.
Programlama dillerinde en mühim OOP(Object Oriented Programing) strüktürlarından olan class gestaltsına için elan basit düzeyde maslahatlemler gerçekleştirmemizi sağlayıcı ve belli başlı bir cihaz kısıtlamaları nispetle çitndıran struct yapısını C# diline özel ele alacağız.
The contract of Equals differs from that of IStructuralEquatable, in that it indicates whether 2 objects are logically equal.
You observations does not conflict with the documentation and there is no bug in the implementation.
3 feature called Tuple Equality! That is right, you güç create a ValueTuple and simply compare them bey they are super optimized, don't create any objects, and reduce this to a single line of C# IStructuralEquatable Nasıl kullanılır code!