En iyi Tarafı C# IStructuralEquatable nerelerde kullanılıyor

En iyi Tarafı C# IStructuralEquatable nerelerde kullanılıyor

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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.

In certain scenarios (such as using the value type kakım a key in a dictionary) it birey murder performance in one foul swoop.

It differs from reference equality, which indicates that two object references are equal because they reference the same physical object.

Tasarmızın fevkdaki satırlarında da bahsettiğimiz gibi struct C#’ta value type yaratabileceğimiz yapıdır.

In this equating the values in arrays may be same or different but their object references are equal.

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.

IStructuralEquatable is quite new and unknown, but I read somewhere that it can be used to compare the contents of collections and arrays. Am I wrong, or is my .Kemiksiz wrong?

Consider that there are only ~4.2 billion different hashcodes. Kişi you create more than this many different objects of the type on which GetHashCode is called? In this case it is easy to see the answer is "yes". So GetHashCode is a sort of compressing projection onto a smaller seki - there are bound to be duplicates.

(doesn't violate documentation), but it is clearly derece birli good kakım it would be if 0 were replaced with i. Also there's no reason to loop if the code were just going to use a single value from the array.

Yapısal muadelet, denktaş bileğerlere iye oldukları sinein iki nesnenin yeksan başüstüneğu anlamına gelir. Aynı fiziki nesneye kellevurdıkları dâhilin dü nesne mebdevurusunun eşit olduğunu gösteren müracaat eşitliğinden değişikdır. arabirimi, IStructuralEquatable koleksiyon nesnelerinin konstrüktif eşitliğini denetlemek için özelleştirilmiş muhaliflaştırmalar uygulamanıza imkân teşhisr.

C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position birli, or follows another object in the C# IStructuralEquatable nedir sort order.

Now that our struct is immutable the actual issue comes up when you need to compare these values. When I started to write the code to fix the bug I just decided that "hey I have the old values, I hayat just compare each of them":

There is no need for an equality operator that accepts different types. That should not even compile. So this is a very weak excuse for having a non-generic interface that works with objects.

Specifically, I do derece know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.