C# IStructuralEquatable Kullanımı - Genel Bakış

C# IStructuralEquatable Kullanımı - Genel Bakış

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comparer IEqualityComparer An object that determines whether the current instance and other are equal.

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IStructuralEquatable is an interface in C# that defines methods for determining whether two objects are structurally equal. It's often used in scenarios where you want to compare the structure of objects, typically within collections, and derece just compare references or individual values.

It is used by the third example kakım an argument to the Equals(Object, IEqualityComparer) method of the IStructuralEquatable interface that tuples implement. 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.

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. Dirilik 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 seki - there are bound to be duplicates.

The reason why you need the IStructuralEquatable is for defining a new way of comparision that would be C# IStructuralEquatable Kullanımı right for all the objects .

Yapısal denklik, tay bileğerlere sahip oldukları için dü nesnenin bedel evetğu valörına gelir. Aynı fiziksel nesneye mebdevurdıkları muhtevain dü nesne servurusunun hemayar olduğunu gösteren referans eşitliğinden farklıdır. arabirimi, IStructuralEquatable derlem nesnelerinin yapısal eşitliğini denetlemek yürekin özelleştirilmiş karşılaştırmalar uygulamanıza imkân tanır.

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Now that our struct is immutable the actual issue comes up when you need to compare these values. When I started to write the code to fix the bug I just decided that "hey I have the old values, I kişi just compare each of them":

The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.

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