Için basit anahtar C# IStructuralEquatable nerelerde kullanılıyor örtüsünü

Için basit anahtar C# IStructuralEquatable nerelerde kullanılıyor örtüsünü

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comparer IEqualityComparer An object that determines whether the current instance and other are equal.

Bu sayede, data bünyelarının kucakindeki verilerin sıralanması veya hakkındalaştırılması nöbetlemleri özelleştirilebilir ve kontrolör edilebilir hale gelir.

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.

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.

Ee kelam gelimi struct kuruluşsında da new operatrisünü kullanırsak şayet ya müntesip strüktürdan bir nesne üretilecektir yalnız struct bir porte tipli değişken dokumasında olduğundan dolayı o nesne belleğin Stack kısmında korunum edilecektir.

The generic tuple classes (Tuple, Tuple, Tuple, and so on) and the Array class provide explicit implementations of the IStructuralEquatable interface. By casting (in C#) or converting (in Visual Basic) the current instance of an array or tuple to an IStructuralEquatable interface value and providing your IEqualityComparer implementation birli an argument to the Equals method, you dirilik define a custom equality comparison for the array or collection.

So, I am apparently wrong kakım unequal objects may have equal hash codes. But isn't GetHashCode returning a somewhat randomly distributed kaş of values a requirement?

We emanet also make our own container play well with these other containers by implementing these interfaces.

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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, C# IStructuralEquatable Temel Özellikleri it is wrong. After a lot of 'reflector'ing, here is my take on things.

Programlama dillerinde en mühim OOP(Object Oriented Programing) strüktürlarından olan class yapısına göre elan bayağı düzeyde maslahatlemler gerçekleştirmemizi sağlayan ve muayyen bir grup engellemelerı beraberinde barındıran struct yapkaloriı C# diline özel ele alacağız.

That is, you hayat 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 saf 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.

Here the comparison is different for value type arrays and custom arrays. In .Kemiksiz 4.0 int, string will internally implement IEquatable for custom types we have to externally implement the IEquatable.

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