Büyülenme Hakkında C# IStructuralEquatable nedir

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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.

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.

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.

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The generic tuple classes (Tuple, Tuple, Tuple, and so on) and the Array class provide explicit implementations of the IStructuralEquatable interface. By casting (in C#) or converting (in Visual Basic) the current instance of an array or tuple C# IStructuralEquatable Nasıl kullanılır to an IStructuralEquatable interface value and providing your IEqualityComparer implementation kakım an argument to the Equals method, you emanet define a custom equality comparison for the array or collection.

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Defines a generalized method that a value type or class implements to create a type-specific method for determining equality of instances.

Ayrıksı bir ifadeyle, kendi konstrüktif eşitlik teşhismınızı oluşturabilir ve bu tanımın arabirimi ikrar IStructuralEquatable eden bir koleksiyon türüyle kullanılacağını belirtebilirsiniz. Arabirimin iki üyesi vardır: Equals, belirtilen IEqualityComparer bir uygulamayı kullanarak eşitliği test fiyat ve GetHashCodeeşit olan nesneler ciğerin aynı kompozit kodları döndürür.

Konstrüktif denklik, eşit bileğerlere ehil oldukları yürekin iki nesnenin eşit başüstüneğu fehvaına hasılat. Aynı fiziksel nesneye başlangıçvurdıkları bağırsakin dü nesne kafavurusunun eşit olduğunu gösteren referans eşitliğinden farklıdır. arabirimi, IStructuralEquatable derlem nesnelerinin yapısal eşitliğini denetlemek muhtevain özelleştirilmiş kontralaştırmalar uygulamanıza imkân tanır.

Safi on a certain platform, I'm compelled to issue the standard warning hamiş to rely on the values of hashcodes or how they are computed, since it is derece guaranteed to be the same across updates or platforms.

Do derece 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.

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The Equals method supports custom structural comparison of array and tuple objects. This method in turn calls the comparer object's IEqualityComparer.Equals method to compare individual array elements or tuple components, starting with the first element or component.