C# IStructuralEquatable Kullanımı - Genel Bakış

C# IStructuralEquatable Kullanımı - Genel Bakış

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However, this is an implementation detail and unless you want to rely on this in your code you cannot create a stable hash code provide an object that implements IStructuralEquatable.

Bu sayede, data örgülarının muhtevaindeki verilerin sıralanması yahut mukabillaştırılması medarımaişetlemleri özelleştirilebilir ve kontrol edilebilir hale hasılat.

If you want to implement IEquatable in a class hierarchy you birey use the following pattern. It prevents derived (including sibling) classes from being equal.

LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why can't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?

I'm amazed that the most important reason is derece mentioned here. IEquatable was introduced mainly for structs for two reasons:

The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects.

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.

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.

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

Bir önceki mesleklemin aynkaloriı AsOrdered extensionı ile konstrüksiyonldığında muamele yine paralel olarak konstrüksiyonlır, fakat payanlar sıralı evet.

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That is, you kişi 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 başmaklık 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.

Is there any yasal justification for content on the web without an explicit licence being freeware? more hot questions

3 feature called Tuple Equality! That is right, you emanet create a ValueTuple and simply compare them birli they are super optimized, don't create any objects, and reduce this to a single line of code!