C# IStructuralEquatable Nasıl kullanılır Ile ilgili detaylı notlar

C# IStructuralEquatable Nasıl kullanılır Ile ilgili detaylı notlar

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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.

In certain scenarios (such as using the value type birli a key in a dictionary) it güç murder performance in one foul swoop.

g. MyType and Object) which will still use the identity comparison. I suspect it's derece a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and

Do not fear because if you simply implement IEquatable the dictionary will use the strongly typed version! The birçok thing is that we kind of actually already did this! So now we just have to do this:

As 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.

Structural equality means that two objects are equal because they have equal values. It differs from reference equality, which indicates that two object references are equal because they reference the same physical object. The IStructuralEquatable interface enables you to implement customized C# IStructuralEquatable nedir comparisons to check for the structural equality of collection objects.

After some more testing I found that any two arrays with the same first element have the same hash. I still think this is strange behavior.

I've noticed these two interfaces, and several associated classes, have been added in .NET 4. They seem a bit superfluous to me; I've read several blogs about them, but I still emanet't figure out what problem they solve that was tricky before .Safi 4.

Projeyi yayınladıgınız dakika user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.

Yapısal müsavat, müsavi değerlere sahip oldukları sinein iki nesnenin müsavi olduğu manaına hasılat. Aynı fiziki nesneye temelvurdıkları ciğerin iki nesne başvurusunun bedel olduğunu gösteren başvuru eşitliğinden değişikdır. arabirimi, IStructuralEquatable derlem nesnelerinin strüktürel eşitliğini denetlemek dâhilin özelleştirilmiş mukabillaştırmalar uygulamanıza olanak tanır.

C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position bey, or follows another object in the sort order.

Do not send hash codes across application domains or processes. In some cases, hash codes may be computed on a per-process or per-application domain basis.

There is no need for an equality operator that accepts different types. That should not even compile. So this is a very weak excuse for having a non-generic interface that works with objects.

However, this is derece so great if you are using the struct in a dictionary kakım my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(