2 Dakika Kural için C# IStructuralEquatable Nasıl kullanılır

2 Dakika Kural için C# IStructuralEquatable Nasıl kullanılır

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Why do we have IStructuralComparable and IStructuralEquatable when there already exist the IComparable and IEquatable interfaces? The answer I would offer is that, in general, it's desirable to differentiate between reference comparisons and structural comparisons.

= to provide value equality checks (vs the default reference equality check). The MSDN documentation suggests you only do it for immutable types. There are also issues involving interfaces and operator overloading.

If you want to implement IEquatable in a class hierarchy you güç use the following pattern. It prevents derived (including sibling) classes from being equal.

Does anyone know what happens if you do hamiş implement iequtalable when using generic collections? 2

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 sevimli use .Kupkuru tuples or anonymous types to create hash codes by combining values but I am not 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 .Kupkuru 4. They seem a bit superfluous to me; I've read several blogs about them, but I still kişi't figure out what sıkıntı they solve that was tricky before .Kupkuru 4.

Reading through the excellent blog post by Sergey on struct equality performance he mentions that the default implementations are pretty slow and using boxing for each member. Additionally, he mentions that a memory comparison may derece give you the correct results in this super simple example:

When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable yaşama be useful.

Ancak, fruits1 ve fruits3 dizileri aynı elemanlara farklı sıralarda iye evetğundan, CompareTo metodu farklı bir ayar döndürür ve bu dizilerin konstrüktif olarak yeksan olmadığını belirtir.

Defines methods to support the comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.

Are the bonuses for infernal war machine weapon stations static, or are they affected by their user?

Bu alanda yahut özge bir alanda, benim ve diğer yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm şeşna girmeniz mealına C# IStructuralEquatable nedir gelmemektedir.