Greatest Kılavuzu C# IStructuralEquatable Nasıl kullanılır için

Greatest Kılavuzu C# IStructuralEquatable Nasıl kullanılır için

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That is, you hayat 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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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.

Equals and object.ReferenceEquals. Equals is meant to be overridden for whatever sort of comparison makes the most sense for a given type, whereas ReferenceEquals güç't be overridden and always compares by reference.

Ee kavil gelimi struct mimarisında da new operatrisünü kullanırsak eğer he müntesip binadan bir nesne üretilecektir fakat struct bir porte tipli mütehavvil mimarisında olduğundan dolayı o nesne belleğin Stack kısmında koruma edilecektir.

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 as an argument to the Equals method, you güç define a custom equality comparison for the array or collection.

After some more testing I found that any two arrays with the same first element have the same hash. I still think this is strange behavior.

Defines a generalized method that a value type or class implements C# IStructuralEquatable Temel Özellikleri to create a type-specific method for determining equality of instances.

Reading through the excellent blog post by Sergey on struct equality performance he mentions that the default implementations are pretty slow and using boxing for each member. Additionally, he mentions that a memory comparison may not give you the correct results in this super simple example:

Task oluşturmanın sorunlemci üzerinde maliyeti vardır ve çok kesik devam eden meselelemler sinein bir task tekvin etmek genelde daha yavaş çallıkışan uygulamalara münasebet olur.

Safi on a certain platform, I'm compelled to issue the standard warning derece to rely on the values of hashcodes or how they are computed, since it is hamiş guaranteed to be the same across updates or platforms.

Do hamiş send hash codes across application domains or processes. In some cases, hash codes may be computed on a per-process or per-application domain basis.

GetHashCode does not return unique values for instances that are not equal. However, instances that are equal will always return the same hash code.

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 components, starting with the first element or component.