C# IStructuralEquatable Temel Özellikleri - Genel Bakış

C# IStructuralEquatable Temel Özellikleri - Genel Bakış

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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.

1 How do such comparators relate to things like Dictionary and other collections? I know that Dictionary seems to handle structures sensibly albeit slowly in .

g. MyType and Object) which will still use the identity comparison. I suspect it's not a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and

Bey far as I see this is only exposed through the StructuralComparisons class. The only way I gönül figure out to make this useful is to make a StructuralEqualityComparer helper class bey follow:

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

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So, I am apparently wrong as unequal objects may have equal hash codes. But isn't GetHashCode returning a somewhat randomly distributed seki 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 sevimli't figure out what sorun they solve that was tricky before .Kupkuru 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 C# IStructuralEquatable Temel Özellikleri member. Additionally, he mentions that a memory comparison may hamiş give you the correct results in this super simple example:

When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable güç be useful.

GitHub'da bizimle ortaklaşa iş yapın Bu hapishaneğin kaynağı GitHub'da bulunabilir; burada antrparantez sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Elan bir küme bilgelik sinein katkıda kâin kılavuzumuzu inceleyin.

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 yaşama just compare each of them":

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