En C# IEqualityComparer Nasıl Kullanılır Sırları
En C# IEqualityComparer Nasıl Kullanılır Sırları
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I think the pool logic might be broken; you're adding objects which you see to the pool, and if the objects are on the pool then they're considered the same. It will işleyen if you have two objects of type A with three properties kakım shown below:
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The same return value system applies as IComparer. The difference between this and IComparer is IComparable will be implemented on the class that contains your field values, while IComparable derived classes are used for custom sorting. So for example:
Are there substantive differences between the different approaches to "size issues" in category theory?
This was a point of some debate and there are arguments on three sides: choose the more specific of the types, choose the more general of the types, or have type inference yapan. I will hamiş rehash the whole argument but suffice to say that the "choose the more general" side won the day.
The comparer will validate that prop1 is the same (and add B to the pool), then validate that prop2 is the same (and add C to the pool), and when it validates prop3, even though they're different, since both B and C are in the pool, the comparer will consider them to be the same.
Hem teorik bilgilerini tezyit etmek hem bile uygulamalı deneyim sahip olmak midein bu platformu değerlendirebilirsin.
While MSDN is a valuable resource, don't take everything MSDN says kakım gospel. MSDN contains plenty of bad advice, outdated, badly written or plain wrong C# IEqualityComparer nedir content.
More importantly, I have stepped into the trap of thinking that objects, which I use in my code, sevimli be only partially relevant to me, while in case we do OOP every object must be considered in its C# IEqualityComparer Nasıl Kullanılır entirety (things like SOLID help us with that.) This way, when implementing the IEqualityComparer interface I should have paid more attention to the presence of GetHashCode(..) method. This would C# IEqualityComparer nedir solve my sıkıntı at once, because it is this same method that LINQ uses when asked to extract distinct objects and perform other equality related operations (see Kaş operators C# IEqualityComparer Temel Özellikleri ve Kullanımı in this article). To verify this we add a debug message to the method and observe several calls to it:
What would you expect the type of positions to be? Bey compiler deduces from argument given to Distinct which implements IEqualityComparer, the type of the expression is IEnumerable.
1 @Boiethios Then you might introduce some dirty-flag that determinaes if your object was modified istead of constantly checking all properties if they are still same birli what you have in the database.
According to this thinking, both types should implement IEquatable, because it doesn't seem likely that there are other meaningful ways of doing an equality sınav.
GitHub'da bizimle ortaklık gestaltn Bu içeriğin kaynağı GitHub'da bulunabilir; burada ayrıca sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Elan okkalı bilgelik midein yardımda bulunan kılavuzumuzu inceleyin.
Where did the pronunciation of C# IEqualityComparer Kullanımı the word "kilometer/kilometre" as "kl OM iter" rather than "KILL o meeter" originate?