Hakkında herşey C# IStructuralEquatable Nasıl kullanılır

Hakkında herşey C# IStructuralEquatable Nasıl kullanılır

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However, this is an implementation detail and unless you want to rely on this in your code you cannot create a stable hash code provide an object that implements IStructuralEquatable.

Bu sayede, muta kuruluşlarının dâhilindeki verilerin sıralanması veya mukabillaştırılması medarımaişetlemleri özelleştirilebilir ve yoklama edilebilir hale hasılat.

If you want to implement IEquatable in a class hierarchy you güç use the following pattern. It prevents derived (including sibling) classes from being equal.

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Bey an example, it might make sense for two different instances of an Employee class to be considered equal if they both represent the same entity in your system.

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.

The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects. This is also made clear by the fact that this interface resides in the System.Collections namespace.

Consider that there are only ~4.2 billion different hashcodes. Güç you create more than this many different objects of the type on which GetHashCode is called? In this case it is easy to see the answer is "yes". So GetHashCode is a sort of compressing projection onto a smaller set - there are bound to be duplicates.

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Konstrüktif eşitlik, yeksan bileğerlere ehil oldukları midein dü nesnenin eşit başüstüneğu mealına gelir. Aynı fiziksel nesneye kafavurdıkları ciğerin dü nesne kellevurusunun yeksan olduğunu gösteren referans eşitliğinden farklıdır. arabirimi, IStructuralEquatable derlem nesnelerinin strüktürel eşitliğini denetlemek muhtevain özelleştirilmiş karşılaştırmalar uygulamanıza imkân teşhisr.

This member is C# IStructuralEquatable Temel Özellikleri an explicit interface member implementation. It gönül be used only when the Array instance is cast to an IStructuralEquatable interface.

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There is no need for an equality operator that accepts different types. That should not even compile. So this is a very weak excuse for having a non-generic interface that works with objects.

While writing my own immutable ByteArray class that uses a byte array internally, I implemented the IStructuralEquatable interface.