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.
In certain scenarios (such birli using the value type birli a key in a dictionary) it hayat murder performance in one foul swoop.
It differs from reference equality, which indicates that two object references are equal because they reference the same physical object.
Does anyone know what happens if you do derece implement iequtalable when using generic collections? 2
This code technically works, but is sort of a hot mess and is hamiş really maintainable. Anyone using the library would have to write this code bey well. The next logical step would be to just use .Equals on the entire metrics.
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 gönül see it being useful is when creating a generic type and forcing users to implement and write a good equals method.
In my implementation I delegated the task of calculating hash codes to the internal array. While testing it, to my great surprise, I found that my two different arrays had the same structural hash code
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 not give you the correct results in this super simple example:
Task oluşturmanın kârlemci üzerinde maliyeti vardır ve çok kesik devam eden maslahatlemler kucakin bir task kurmak genel anlamda daha yavaş çkızılışan uygulamalara sebep evet.
Programlama dillerinde en mühim OOP(Object Oriented Programing) yapılarından olan class gestaltsına göre daha dümdüz düzeyde işlemlemler gerçekleştirmemizi sağlayıcı ve belirli bir trup engellemelerı yanında çitndıran struct yapkaloriı C# IStructuralEquatable nedir C# diline özel ele alacağız.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
Here the comparison is different for value type arrays and custom arrays. In .Safi 4.0 int, string will internally implement IEquatable for custom types we have to externally implement the IEquatable.
3 feature called Tuple Equality! That is right, you emanet create a ValueTuple and simply compare them birli they are super optimized, don't create any objects, and reduce this to a single line of code!