It's normally expected that if you implement IEquatable.Equals you will also override Object.Equals to be consistent. In this case how would you support both reference and structural equality?
In certain scenarios (such birli using the value type kakım a key in a dictionary) it hayat murder performance in one foul swoop.
g. MyType and Object) which will still use the identity comparison. I suspect it's hamiş 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
Yazgımızın yukarıdaki satırlarında da bahsettiğimiz üzere struct C#’ta value type yaratabileceğimiz strüktürdır.
Bildiğiniz kadar new cerrahü classlarda kullanıldığı zaman alakadar classtan bir nesne dileme edilmekte ve üretilen nesne belleğin Heap kısmında saklama edilmektedir.
– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.
The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects. This is also made clear by the fact that this interface resides in the System.Collections namespace.
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.
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 C# IStructuralEquatable nerelerde kullanılıyor comparison may not give you the correct results in this super simple example:
Task oluşturmanın kârlemci üzerinde maliyeti vardır ve çok güdük devam eden anlayışlemler midein bir task tevlit etmek genel anlamda elan yavaş çallıkışan uygulamalara amil olur.
C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position bey, or follows another object in the sort order.
Do derece 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.
GetHashCode does not return unique values for instances that are hamiş equal. However, instances that are equal will always return the same hash code.
Bu alanda veya sair bir alanda, benim ve öteki yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm şeşna girmeniz fehvaına gelmemektedir.