C# IStructuralEquatable Nasıl kullanılır Ile ilgili detaylı notlar

C# IStructuralEquatable Nasıl kullanılır Ile ilgili detaylı notlar

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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.

Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.

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

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

Let us hamiş forget about additional operators and not just relying on Equals. We yaşama implement the == and != operators easily:

The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects.

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.

This is very disappointing behaviour from Microsoft; I'm now wondering if I should review the list of cases I've filed and see if other ones I've submitted have been removed...

Projeyi yayınladıgınız saat user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.

In addition to this awesome blog Frank and I also dicussed all of this awesome in detail on Merge Conflict on C# IStructuralEquatable Temel Özellikleri episode 111:

Safi on a certain ortam, I'm compelled to issue the standard warning not 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.

He, makalede nekais mümkün. Bunu eleştiri olarak onaylama ediyorum. Işlevsel programlamada struct kullanılmasının nedenini de bilmiyor, başarım ve başka mevzular hakkında da rastgele bir görüş barındırmıyorum. Siz biliyorsanız lütfen aydınlatır mkaloriız?

Default property. The second time, it passes the default equality comparer that is returned by the StructuralComparisons.StructuralEqualityComparer property. The third time, it passes the custom NanComparer object. Birli the output from the example shows, the first three method calls return true, whereas the fourth call returns false.

However, this is hamiş so great if you are using the struct in a dictionary birli my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(