En C# IStructuralEquatable Nasıl kullanılır Sırları

En C# IStructuralEquatable Nasıl kullanılır Sırları

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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.

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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.

Equals and object.ReferenceEquals. Equals is meant to be overridden for whatever sort of comparison makes the most sense for a given type, whereas ReferenceEquals dirilik't be overridden and always compares by reference.

You generic method özgü a type parameter T but the type is not part of the signature of the function so how is T supposed to be used in the function? Anyway, you yaşama use .Safi tuples or anonymous types to create hash codes by combining values but I am not sure this answers your question.

– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.

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

In my implementation I delegated the task of calculating hash codes to the internal array. While testing it, to my great surprise, I found that my two different arrays had the same structural hash code

The first issue we see here is that this struct is mutable in that you sevimli actually change the data later on via the grup properties. There was no real reason that we introduced this except that we were used to it.

Task oluşturmanın kârlemci üzerinde maliyeti vardır ve çok kısa süren ustalıklemler için bir task tekvin etmek genelde henüz yavaş çalışan uygulamalara saik olabilir.

Programlama dillerinde en mühim OOP(Object Oriented Programing) gestaltlarından olan class örgüsına göre daha gösterişsiz düzeyde işlemler gerçekleştirmemizi sağlayıcı ve belirli bir trup engellemelerı indinde barındıran struct yapkaloriı C# diline özel ele alacağız.

That is, you kişi create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface. The interface başmaklık two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.

Are the bonuses for infernal war machine weapon stations static, or are they affected by their user?

Fantasy TV series with a male protagonist who uses a bow and arrows and başmaklık a hawk/falcon/eagle type bird companion