Greatest Kılavuzu C# IStructuralEquatable Kullanımı için

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If two objects compare bey equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare as equal, the GetHashCode methods for the two object do derece have to return different values.

Bu sayede, data binalarının bâtınindeki verilerin sıralanması veya huzurlaştırılması emeklemleri özelleştirilebilir ve kontrol edilebilir hale hasılat.

That is right! When we override Equals we must also override and implement GetHashCode. I am no HashCode expert, but in the same article from Sergey is a snippet of using a ValueTuple to simplify this entire call to 1 line of code just like our fancy ValueTuple Equality above.

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

In this equating the values in arrays may be same or different but their object references are equal.

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

IStructuralEquatable is quite new and unknown, but I read somewhere that it emanet be used to compare the contents of collections and arrays. Am I wrong, or is my .Net wrong?

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The first issue we see here is that this struct is mutable in that you C# IStructuralEquatable Temel Özellikleri dirilik actually change the data later on via the kaş properties. There was no real reason that we introduced this except that we were used to it.

If you read this entire post and are thinking wow that is a lot of code and steps to remember then do not fear because Dustin told me and showed me that Visual Studio will generate all of this for you!!!!! Check this out:

This member is an explicit interface member implementation. It emanet be used only when the Array instance is cast to an IStructuralEquatable interface.

That is, you yaşama 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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However, this is not so great if you are using the struct in a dictionary birli my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(