Hakkında C# IStructuralEquatable Temel Özellikleri
Hakkında C# IStructuralEquatable Temel Özellikleri
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comparer IEqualityComparer An object that determines whether the current instance and other are equal.
Bu tür bir önlaştırma, makale saksılıklarının sıralamasının önemli evetğu durumlarda, yapısal benzerliklerin veya farklılıkların belirlenmesine yardımcı kabil.
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.
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You generic method has a type parameter T but the type is hamiş part of the signature of the function so how is T supposed to be used in the function? Anyway, you kişi use .Kemiksiz tuples or anonymous types to create hash codes by combining values but I am not sure this answers your question.
If two objects compare birli equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare bey equal, the GetHashCode methods for the two object do hamiş have to return different values.
What does IEquatable buy you, exactly? The only reason I hayat see it being useful is when creating a generic type and forcing users to implement and write a good equals method.
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Coming soon: Throughout 2024 we will be phasing out GitHub Issues birli the feedback mechanism for content and replacing it with a new feedback system. For more information see: .
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 özgü 8 upvotes, it is wrong. After a lot of 'reflector'ing, here is my take on things.
Kupkuru on a certain ortam, I'm compelled to issue the standard warning derece to rely on the values of hashcodes or how they are computed, since it is hamiş guaranteed to be the same across updates or platforms.
IStructuralEquatable is used with arrays to determine whether the arrays are structurally equal. The StructuralEqualityComparer.Equals method is used for this purpose.
Default property. The second time, it passes the default equality comparer that is returned by the StructuralComparisons.StructuralEqualityComparer property. The third time, it passes the custom NanComparer object. Bey the output from the example shows, the first three method calls return true, whereas the fourth call returns false.
Burada dikkat ederseniz şayet ms.x ve ms.y bileğçalışmameyeceğinden dolayı bir Deep Copy kelam konusudur. şayet referans tipli bünyelar olsalardı süflidaki gibi bir sonuç elde edilecekti ve Shallow Copy söz konusu olacaktı.