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.
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It differs from reference equality, which indicates that two object references are equal because they reference the same physical object.
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 not just compare references or individual values.
You generic method saf a type parameter T but the type is derece part of the signature of the function so how is T supposed to be used in the function? Anyway, you hayat use .NET tuples or anonymous types to create hash codes by combining values but I am hamiş sure this answers your question.
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So, I am apparently wrong as unequal objects may have equal hash codes. But isn't GetHashCode returning a somewhat randomly distributed kaş of values a requirement?
I've noticed these two interfaces, and several associated classes, have been added in .Kemiksiz 4. They seem a bit superfluous to me; I've read several blogs about them, but I still birey't figure out what problem they solve that was tricky before .Kemiksiz 4.
The first issue we see here is that this struct is mutable in that you kişi actually change the data later on via the set properties. There was no real reason that we introduced this C# IStructuralEquatable Kullanımı except that we were used to it.
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To achieve this, employee objects with matching SSN properties would be treated kakım logically equal, even if they were not structurally equal. Share Improve this answer Follow
That is, you birey 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 özgü 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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3 feature called Tuple Equality! That is right, you birey 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!