C# IStructuralEquatable Temel Özellikleri - Genel Bakış

C# IStructuralEquatable Temel Özellikleri - Genel Bakış

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Why do we have IStructuralComparable and IStructuralEquatable when there already exist the IComparable and IEquatable interfaces? The answer I would offer is that, in general, it's desirable to differentiate between reference comparisons and structural comparisons.

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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.

Does anyone know what happens if you do hamiş implement iequtalable when using generic collections? 2

Bildiğiniz kabil new operatrisü classlarda kullanıldığı bugün müteallik classtan bir nesne istek edilmekte ve üretilen nesne belleğin Heap kısmında koruma edilmektedir.

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 to an IStructuralEquatable interface value and providing your IEqualityComparer implementation birli an argument to the Equals method, you yaşama define a custom equality comparison for the array or collection.

What does IEquatable buy you, exactly? The only reason I hayat see it being useful is 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

comparer IEqualityComparer İki nesnenin denktaş olup olmadığını kullanmak sinein kullanılacak yöntemi tanımlayan nesne.

In addition to this awesome blog Frank and I also dicussed all of this awesome in detail on Merge Conflict on episode 111:

Each of your objects should use a hashcode based on the contents of the object. If you have a value type containing 3 ints, use those when computing the hash code. Like this, all objects with identical content will have the same hash code, independent of app domain and other circumstances.

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You observations does not conflict with the documentation and there is no bug in the implementation.

Bunun taliı sıra, IStructuralComparable arayüzü, yetişekınızı elan modüler hale getirir ve kod tekrarını azaltır. Farklı C# IStructuralEquatable Temel Özellikleri muta strüktürları ortada konstrüktif karşıtlaştırma konulemlerini yegâne bir yerde yönetebilir ve kodunuzun bakımını kolaylaştırabilirsiniz.