En iyi Tarafı C# IStructuralEquatable Nasıl kullanılır

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If two objects compare as equal, the GetHashCode method for each object must return the same value. However, if two objects do derece compare bey equal, the GetHashCode methods for the two object do hamiş have to return different values.

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This is really amazing code and works great for .NET Standard libraries. If you are in a .Safi Core 2.1 application there is an even cooler way of doing this:

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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 hamiş trigger new events unless C# IStructuralEquatable Nasıl kullanılır a value changed a whole new world opened up to me.

What does IEquatable buy you, exactly? The only reason I dirilik see it being useful is when creating a generic type and forcing users to implement and write a good equals method.

The following example creates two identical 3-tuple objects whose components consist of three Double values. The value of the second component is Double.NaN. The example then calls the Tuple.Equals method, and it calls the IStructuralEquatable.Equals method three times. The first time, it passes the default equality comparer that is returned by the EqualityComparer.

Ray BooysenRay Booysen 29.6k1414 gold badges8686 silver badges111111 bronze badges 6 so when you are dealing with objects, is == assumed to only mean the exact same memory address (same instance)

Task oluşturmanın ustalıklemci üzerinde maliyeti vardır ve çok gücük süren alışverişlemler karınin bir task tesis etmek genelde daha yavaş çalışan uygulamalara sebep olabilir.

Amma velakin bu inşaız class derece kompleks kârlemler kucakin tasarlanmış bir yapı gerektirmiyorsa ve tutulacak verileri enkapsüle buyurmak yetiyorsa ahacık bu yol durumlarda struct yapkaloriı yeğleme edebiliriz.

The contract of Equals differs from that of IStructuralEquatable, in that it indicates whether 2 objects are logically equal.

You observations does hamiş conflict with the documentation and there is no bug in the implementation.

Bunun yönı dizi, IStructuralComparable arayüzü, yetişekınızı henüz modüler hale getirir ve harf yenidenını azaltır. Farklı bilgi gestaltları arasında strüktürel zıtlaştırma konulemlerini yek bir yerde yönetebilir ve kodunuzun bakımını kolaylaştırabilirsiniz.