Değil Hakkında Detaylar bilinen C# IStructuralEquatable Kullanımı

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It's normally expected that if you implement IEquatable.Equals you will also override Object.Equals to be consistent. In this case how would you support both reference and structural equality?

= 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.

Yazımızın fevkdaki satırlarında da bahsettiğimiz kabilinden struct C#’ta value type yaratabileceğimiz bünyedır.

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45IStructuralEquatable seObj = x kakım IStructuralEquatable; 64IStructuralEquatable seObj = obj bey IStructuralEquatable;

The IEquatable implementation will require one less cast for these classes and as a result will be slightly faster than the standard object.Equals method that would be used otherwise. Kakım an example see the different implementation of the two methods:

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Coming soon: Throughout C# IStructuralEquatable Kullanımı 2024 we will be phasing out GitHub Issues kakım the feedback mechanism for content and replacing it with a new feedback system. For more information see: .

I had the same question. When I ran LBushkin's example I was surprised to see that I got a different answer! Even though that answer katışıksız 8 upvotes, it is wrong. After a lot of 'reflector'ing, here is my take on things.

To achieve this, employee objects with matching SSN properties would be treated birli logically equal, even if they were not structurally equal. Share Improve this answer Follow

That is, you güç create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface. The interface has two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.

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Specifically, I do not know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.