Değil Hakkında Detaylar bilinen C# IStructuralEquatable Kullanımı

Değil Hakkında Detaylar bilinen C# IStructuralEquatable Kullanımı

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If equality is derece needed for the derived class you can skip IEquatable but you need to override the CanEqual to prevent it being equal with base classes (unless of course they should be considered equal).

= 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.

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.

Makalemızın fevkdaki satırlarında da bahsettiğimiz gibi struct C#’ta value type yaratabileceğimiz yapıdır.

This code technically works, but is sort of a hot mess and is derece really maintainable. Anyone using the library would have to write this code birli well. The next logical step would be to just use .Equals on the entire metrics.

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

If those objects do derece contain equality/hashcode methods that satisfy that contract, you will have to wrap them and provide correct implementations for those methods yourself in the wrapper.

When an implementer overrides the virtual Equals method in a struct, the C# IStructuralEquatable nedir purpose is to provide a more efficient means of performing the value equality check and optionally to base the comparison on some subset of the struct's field or properties.

Ray BooysenRay Booysen 29.6k1414 gold badges8686 silver badges111111 bronze badges 6 so when you are dealing with objects, is == assumed to only mean the exact same memory address (same instance)

If you read this entire post and are thinking wow that is a lot of code and steps to remember then do hamiş fear because Dustin told me and showed me that Visual Studio will generate all of this for you!!!!! Check this out:

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

That is, you gönül 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 özgü 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.

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

Bunun tarafı rabıta, IStructuralComparable arayüzü, izlenceınızı henüz modüler hale getirir ve şifre yineını azaltır. Farklı data bünyeları ortada yapısal karşılaştırma işlemlemlerini hareketsiz bir yerde yönetebilir ve kodunuzun hizmetını kolaylaştırabilirsiniz.