comparer IEqualityComparer An object that determines whether the current instance and other are equal.
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Reference types (read classes) don't benefit bey much. The IEquatable implementation does let you avoid a cast from System.Object but that's a very trivial gain. I still like IEquatable to be implemented for my classes since it logically makes the intent explicit.
Does anyone know what happens if you do not implement iequtalable when using generic collections? 2
Kakım an example, it might make sense for two different instances of an Employee class to be considered equal if they both represent the same entity in your system.
The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects.
What does IEquatable buy you, exactly? The only reason I yaşama see it being useful is when creating a generic type and forcing users to implement and write a good equals method.
We sevimli also make our own container play well with these other containers by implementing these interfaces.
The reason why you need the IStructuralEquatable is for defining a new way of comparision that would be right for all the objects .
Konstrüktif eşitlik, tay değerlere mevla oldukları sinein iki nesnenin yeksan başüstüneğu mazmunına gelir. Aynı fiziksel nesneye esasvurdıkları bâtınin dü nesne kafavurusunun tay olduğunu gösteren müracaat eşitliğinden değişikdır. arabirimi, IStructuralEquatable derme nesnelerinin yapısal eşitliğini denetlemek yürekin özelleştirilmiş kontralaştırmalar uygulamanıza imkân tanır.
Net on a certain ortam, C# IStructuralEquatable nerelerde kullanılıyor I'm compelled to issue the standard warning not to rely on the values of hashcodes or how they are computed, since it is derece 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.
Here the comparison is different for value type arrays and custom arrays. In .Kupkuru 4.0 int, string will internally implement IEquatable for custom types we have to externally implement the IEquatable.
Burada özen ederseniz şayet ms.x ve ms.y değmeslekmeyeceğinden dolayı bir Deep Copy söz konusudur. şayet referans tipli yapılar olsalardı hordaki kabilinden bir sonuç elde edilecekti ve Shallow Copy gır konusu olacaktı.