En C# IEqualityComparer Nasıl Kullanılır Sırları

If you do decide you need a comparer, you kişi certainly use a generalized comparer (see DMenT's answer), but if you need to reuse that logic you should encapsulate it in a dedicated class. You could even declare it by inheriting from the generic base:

The comparer doesn't handle Dictionary, since you're only looking for IList; if you started looking for IEnumerable (and added a special case for KeyValuePair) it would handle dictionaries as well

When i am using dictionaries sometimes I have to change the default Equals meaning in order to compare Keys. I see that if I override the Equals and GetHashCode on the key's class or i create a new class which implements IEqualityComparer I have the same result. So what's the difference between using IEqualityComparer and Equals/GethashCode Override?

ama ben yalnızca otomatik olarak mai ve 0 ın tekrarlanmamasını buttona basmış olduğumda kendiliğinden olarak silinsin istiyorum fareyle seçmek istemiyorum bunun kucakin bir harf varmıdır

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 eden. I will not rehash the whole argument but suffice to say that the "choose the more general" side won the day.

If you change your class to implement IEquatable instead, the implementation of Distinct (which will use EqualityComparer.Default which in turn sees your type implements IEquatable and delegates to that) will work as you expect.

İkinci öğreticide ise C# dilinin daha gelişmiş temel mevzuları ele alınır. Bu bölümde kodun çtuzakışma saatındaki davranışını incelemek yürekin kullanılan "Yansıma", nöbet bazlı muvasala sağlayıcı "Dizin Oluşturucular", başarım gereksinimlerine cevap C# IEqualityComparer Nasıl Kullanılır kazandırmak ciğerin kullanılan "Emniyetli Sıfır Harf" ve yekten bir tomar iş parçacığının eş zamanlı çtuzakıştırılmasına imkân tanıyan "Multithreading" kabil konular detaylı şekilde anlayışlenir.

We’ll write a classic implementation of IEqualityComparer class. In our example, we need to compare customers. Two customers are distinct if your first char Name is different.

In the editor, place the caret at the type name or within a type at the line where you C# IEqualityComparer nerelerde kullanılıyor want to insert an equality comparer class. If the caret is on the type name, the generated code will be added in the beginning of the type declaration.

I'm using C# IEqualityComparer Temel Özellikleri ve Kullanımı this in an integration test, so I insert veri from a IEnumerable into a DB at the start, then call my SUT to retrieve data from DB and compare.

C# ta formunuza eklemiş olduğunuz bir resmi kodla duruma bakarak C# IEqualityComparer nedir temsil etmek veya tebdil etmek gibi durumlarda bu yöntemi kullanabilirsiniz.

Now, think of a field or fields that differentiate our class, ID for example. IEqualityComparer helps you to manage and improve the efficiency

So now we know how to use IEqualityComparer with LINQ and hamiş make a mess of it. I hope this helps. However, I would like C# IEqualityComparer nerelerde kullanılıyor to push our ActorComparer a little further. Kakım you might know, LINQ özgü an OrderBy(..) extension method that allows us to sort a collection according to some key.

5 When writing programs in C# with the help of LINQ I have come across the IEqualityComparer generic interface several times.

Leave a Reply

Your email address will not be published. Required fields are marked *