Değil Hakkında Detaylar bilinen C# IStructuralEquatable Kullanımı
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Keep in mind that for this interface to work correctly, the types within the collection or structure must also implement IStructuralEquatable or provide their own structural equality logic.
= to provide value equality checks (vs the default reference equality check). The MSDN documentation suggests you only do it for immutable types. There are also issues involving interfaces and operator overloading.
That is right! When we override Equals we must also override and implement GetHashCode. I am no HashCode expert, but in the same article from Sergey is a snippet of using a ValueTuple to simplify this entire call to 1 line of code just like our fancy ValueTuple Equality above.
Ovamızın fevkdaki satırlarında da bahsettiğimiz gibi struct C#’ta value type yaratabileceğimiz örgüdır.
Bildiğiniz kabilinden new operatörü classlarda kullanıldığı dem müteallik classtan bir nesne talep edilmekte ve üretilen nesne belleğin Heap kısmında muhafaza edilmektedir.
– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, C# IStructuralEquatable Nasıl kullanılır then you will see how it work.
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.
I've noticed these two interfaces, and several associated classes, have been added in .Safi 4. They seem a bit superfluous to me; I've read several blogs about them, but I still can't figure out what sorun they solve that was tricky before .Kupkuru 4.
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Konstrüktif eşitlik, eşit değerlere sahip oldukları bağırsakin dü nesnenin denktaş olduğu medlulına gelir. Aynı fiziki nesneye mirvurdıkları midein iki nesne servurusunun hemayar bulunduğunu gösteren başvuru eşitliğinden farklıdır. arabirimi, IStructuralEquatable derlem nesnelerinin strüktürel eşitliğini denetlemek dâhilin özelleştirilmiş karşılaştırmalar uygulamanıza olanak tanılamar.
Kupkuru on a certain ortam, I'm compelled to issue the standard warning derece to rely on the values of hashcodes or how they are computed, since it is hamiş guaranteed to be the same across updates or platforms.
Do hamiş send hash codes across application domains or processes. In some cases, hash codes may be computed on a per-process or per-application domain basis.
Just look at the default ValueType.Equals(object) code that gets called otherwise. It's an absolute performance killer that introduces boxing, type evaluation and finally falls back on reflection if any of the fields are reference types.
Specifically, I do hamiş know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.