Benim C# IStructuralEquatable Nasıl kullanılır Başlarken Çalışmak

Benim C# IStructuralEquatable Nasıl kullanılır Başlarken Çalışmak

Blog Article

If two objects compare birli equal, the GetHashCode method for each object must return the same value. However, if two objects do derece compare kakım equal, the GetHashCode methods for the two object do not have to return different values.

Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.

. The best example of this is arrays, which with .Kupkuru 4 now implement the IStructuralEquatable interface. This makes it possible to distinguish whether you are comparing two arrays for reference equality, or for "structural equality" - whether they have the same number of items with the same values in each position. Here's an example:

LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why yaşama't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?

Let us derece forget about additional operators and hamiş just relying on Equals. We can implement the == and != operators easily:

The following example defines a NanComparer class that implements the IStructuralEquatable interface. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.

Coming soon: Throughout 2024 we will be phasing out GitHub Issues as the feedback mechanism for content and replacing it with a new feedback system. For more information see: .

When an implementer overrides the virtual Equals method in a struct, the purpose is to provide a more efficient means of performing the value equality check and optionally to base the comparison on some subset of the struct's field or properties.

The reason why you need the IStructuralEquatable is for defining a new way of comparision that would be right for all the objects .

Task oluşturmanın medarımaişetlemci üzerinde maliyeti vardır ve çok kısa süren işçiliklemler karınin bir task yapılandırmak genel anlamda elan yavaş çalışan uygulamalara saika olur.

To achieve this, employee objects with matching SSN properties would be treated bey logically equal, C# IStructuralEquatable Temel Özellikleri even if they were not structurally equal. Share Improve this answer Follow

Ha, makalede nekais mümkün. Bunu tenkit olarak akseptans ediyorum. Işlevsel programlamada struct kullanılmasının nedenini bile bilmiyor, başarım ve öteki mevzular için da herhangi bir düşünüm çitndırmıyorum. Siz biliyorsanız lütfen aydınlatır mısınız?

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Being able to specify IStructuralEquatable/IStructuralComparable in such cases is actually useful. It would also be inconvenient to pass a TupleComparer or ArrayComparer everywhere you want to apply this type of comparison. The two approaches are derece mutually exclusive.