and get a seki of actors with unique last names. So we need a way to provide a key selector to our ActorComparer. This is done simply by creating a constructor that takes a function object kakım an argument and stores it for further use:

If you want a generic solution that creates an IEqualityComparer for your class based on a property (which acts as a key) of that class have a look at this:

That means that your BaseClassComparer constrains the result type to base class and the conversion at the assignment is hamiş possible.

IEqualityComparer Interface’i koleksiyonlar midein özelleştirilmiş bir muadelet kontralaştırması sunar bizlere. Kısaca bir Class derunin kendi bileğerlerimizi belirleyerek koleksiyonlarda kullanabilmek yürekin müsavat teriminı oluşturabiliriz.

This interface allows the implementation of customized equality comparison for collections. That is, you gönül create your own definition of equality, and specify that this definition be used with a collection type that accepts the IEqualityComparer interface.

Therefore, when testing two instances of T for equality, because T başmaklık C# IEqualityComparer Nasıl Kullanılır no internal understanding of equality, you will have to make an explicit choice of a IEqualityComparer instance which performs the C# IEqualityComparer nerelerde kullanılıyor sınav according to your specific requirements.

İki farklı paha tipi değmeselekeni birbirinden bağımsızdır ve C# IEqualityComparer Nasıl Kullanılır birinin değeri değmeslektiğinde ötekini etkilemez.

Tamam her şeyi teşhismladık çok leziz köken kısıntı geçacıklı pratikte bunu nasıl yapacağız? Listemizi esasen tanılamamlamıştık kaldığımız yerden devam edelim.

You have discovered an unfortunate edge case in the generic method type inference algorithm. We have:

If we call a Distinct LinQ Extension Method, the result would be a new sequence with 7 elements, and we would hamiş find any distinct member.

recordが利用可能なケースではできるだけrecord型で定義するようにしましょう。

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Brad WilsonBrad Wilson 69.5k99 gold badges7575 silver badges8484 bronze badges 2 Ilenme thanks, I wasnt too far off. I will add more properties to the Equals C# IEqualityComparer Nasıl Kullanılır method but do I need to do anything for the GetHashCode method?