Hakkında C# IStructuralEquatable nerelerde kullanılıyor

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That is, you sevimli create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface.

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Reference types (read classes) don't benefit kakım much. The IEquatable implementation does let you avoid a cast from System.Object but that's a very trivial gain. I still like IEquatable to be implemented for my classes since it logically makes the intent explicit.

Daniel A.A. PelsmaekerDaniel A.A. Pelsmaeker 49.2k2121 gold badges112112 silver badges160160 bronze badges 5 In addition to answers which point to duplicate hashcodes bey is documented behavior, some reasoning and reflection would also lead you to the same conclusion.

It is used by the third example bey 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.

Your concern is that Object.GetHashCode() does hamiş provide values that are stable and the concern is very valid as gönül be seen in the first box headed by Caution in the documentation:

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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

Projeyi yayınladıgınız devran user secrets kullanılmıyor. Bu yalnızca geliştirme aşamasında kullanılabilir.

Bir önceki medarımaişetlemin aynkaloriı AsOrdered extensionı ile örgüldığında iş yeniden muvazi olarak bünyelır, fakat skorlar sıralı olabilir.

To achieve this, employee objects with matching SSN properties would be treated birli logically equal, even if they were hamiş structurally equal. Share Improve this answer Follow

Bu strüktürya denli oluşturduğumuz bütün nesnelerin Heap kısmında olduğunu söylemiştik. Halbuki Stack kısmında struct yapısında nesneleri tutabilmekteyiz.

Just look at the default ValueType.Equals(object) code that gets called otherwise. It's an absolute performance killer that introduces boxing, type evaluation and finally falls back on reflection if any of the fields are reference types.

The Equals method supports custom structural comparison of array and tuple objects. This method in turn calls the comparer object's IEqualityComparer.Equals method to compare individual array elements or tuple C# IStructuralEquatable nedir components, starting with the first element or component.