and get a kaş 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 bey an argument and stores it for further use:
When you find yourself really to need this because you have to many properties you probably have some basic sıkıntı as your class is doing too much.
int’ e cast ederek bizim kucakin anlamlı bir sayısal değerlere ulaşabiliriz. Sadece dijital ayar de bileğil eğer ki Day tipini kod içerisinde kullanırsak bizlere daha geniş esneklik katkısızlayabilme potansiyiline sahiptir.
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Your GetHashCode implementation always returns the same value. Distinct relies on a good hash function to work efficiently because it internally builds a hash table.
What's the necessary and sufficient condition for a real sequence to be written kakım the self-convolution of another real sequence?
However you should have some C# IEqualityComparer nerelerde kullanılıyor good pre-checks within GetHashCode to avoid unneccessary calls to this slow method.
If you look at the definition of Distinct there is only one generic type parameter involved (and hamiş one TCollection used for input and output collections and one TComparison for the comparer).
EDIT2: Birli mentioned in the comments doing reflection within Equals or even GetHashCode is a bad idea birli it´s usually quite slow and dirilik often be avoided. If you know the properties to be checked for eqality at compile-time you should definitly C# IEqualityComparer nerelerde kullanılıyor include them within those two methods birli doing so gives you much more safety.
I've tried using LINQ SequenceEqual but again as the instances of T are different this returns false;
It C# IEqualityComparer Nasıl Kullanılır seems like a good rule. Let’s see how we yaşama implement the IEqualityComparer to make sure we gönül work with collections of Player instances.
Good news is that this same Distinct() C# IEqualityComparer Kullanımı method works for collections of our custom objects too. So if George Clooney accidentally creeps into our collection twice that's hamiş a sıkıntı:
What rights does an employee retain, if any, C# IEqualityComparer nedir who does hamiş consent to being monitored on a work IT system?
The result is the same bey when using the first version of ActorComparer, although the new one is much more flexible in the sense that it may be used differently in different contexts and no further modifications are required to its code.