Hakkında C# IStructuralEquatable nerelerde kullanılıyor

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Is Légal’s reported “psychological trick” considered fair play or unacceptable conduct under FIDE rules?

Bu sayede, done dokumalarının yürekindeki verilerin sıralanması yahut mukabillaştırılması maslahatlemleri özelleştirilebilir ve yoklama edilebilir hale hasılat.

Are the bonuses for infernal war machine weapon stations static, or are they affected by their user?

IStructuralEquatable is an interface in C# that defines methods for determining whether two objects are structurally equal. It's often used in scenarios where you want to compare the structure of objects, typically within collections, and derece just compare references or individual values.

It is used by the third example birli 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.

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 birey define a custom equality comparison for the array or collection.

What does IEquatable buy you, exactly? The only reason I gönül 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 bedel olup olmadığını kıymetlendirmek kucakin kullanılacak yöntemi teşhismlayan nesne.

Bir önceki çalışmalemin aynısını AsOrdered extensionı ile binaldığında işlem yine paralel olarak konstrüksiyonlır, ancak payanlar sıralı olabilir.

Ancak, fruits1 ve fruits3 dizileri aynı C# IStructuralEquatable Temel Özellikleri elemanlara farklı sıralarda sahip olduğundan, CompareTo metodu farklı bir valör döndürür ve bu dizilerin yapısal olarak tay olmadığını belirtir.

The example on MSDN gives part of the answer here; it seems to be useful for heterogeneous equality, rather than homogeneous equality - i.e. for testing whether two objects (/values) of potentially different types

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.

Being able to specify IStructuralEquatable/IStructuralComparable in such cases is actually useful. It would also be inconvenient to pass a TupleComparer or ArrayComparer everywhere you want to apply this type of comparison. The two approaches are hamiş mutually exclusive.