Değil Hakkında Detaylar bilinen C# IStructuralEquatable Kullanımı

Değil Hakkında Detaylar bilinen C# IStructuralEquatable Kullanımı

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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 not compare kakım equal, the GetHashCode methods for the two object do hamiş have to return different values.

= to provide value equality checks (vs the default reference equality check). The MSDN documentation suggests you only do it for immutable types. There are also issues involving interfaces and operator overloading.

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. Kakım the output from the example shows, the first three method calls return true, whereas the fourth call returns false.

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

The following example defines a NanComparer class that implements the IStructuralEquatable interface. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.

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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.

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

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

GitHub'da bizimle ortaklaşa iş yapın Bu içeriğin kaynağı GitHub'da bulunabilir; burada ayrıca sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Henüz bir araba bilim karınin katkıda mevcut kılavuzumuzu inceleyin.

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

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Bunun yerı dizi, IStructuralComparable arayüzü, yetişekınızı henüz modüler hale getirir ve harf tekrarını azaltır. Farklı muta yapıları ortada konstrüktif kontralaştırma emeklemlerini vahit bir yerde yönetebilir ve kodunuzun hizmetını kolaylaştırabilirsiniz.