If two objects compare as equal, the GetHashCode method for each object must return the same value. However, if two objects do hamiş compare bey equal, the GetHashCode methods for the two object do derece have to return different values.

In this case you don't want to change your class implementation so you don't wantoverride the Equals method. this will define a general way to compare objects in your application.

This is really amazing code and works great for .Kemiksiz Standard libraries. If you are in a .NET Core 2.1 application there is an even cooler way of doing this:

Alfabemızın mafevkdaki satırlarında da bahsettiğimiz kabilinden struct C#’ta value type yaratabileceğimiz örgüdır.

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Your concern is that Object.GetHashCode() does not provide values that are stable and the concern is very valid bey dirilik be seen in the first box headed by Caution in the documentation:

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Doğrusu anlayacağınız “int” kabil, “bool” gibi kırat tipli bir parametre tekvin etmek istiyorsanız struct yapısını tercih edebilirsiniz.

The reason why you need the IStructuralEquatable is for defining a new way of comparision that would be right for all the objects .

I had the same question. When I ran LBushkin's example I was surprised to see that I got a different answer! Even though that answer başmaklık 8 upvotes, it is wrong. After a lot of 'reflector'ing, C# IStructuralEquatable Temel Özellikleri here is my take on things.

C# IStructuralEquatable Defines methods to support the comparison of objects for structural equality.

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.

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