The last statement basically means that in case we rely on Equals(..) method we could calculate hash based only on the last name and the result will still be the same:

C# programlarında namuslu tipleri kullanarak, akıl yönetimi ve bilgi manipülasyonunu henüz hayır anlayabilir ve henüz müessir kodlar yazabilirsiniz.

Another scenario where it may be useful to have an alternative means of comparison is when an object holds a reference to an instance a mutable type, but will never expose that instance to anything that might mutate it. In general, two instances of int[] that hold the same sequence of values will hamiş be interchangeable, since it would be possible that in future one or both of them might be changed to hold different values.

Make the properties / fieldInfos fields static; they don't change for each closed instance of the type PropertiesByValueComparer (i.e., for each T passed to it), so you don't need to initialize them for every new instance of the comparer

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

Important Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to C# IEqualityComparer nerelerde kullanılıyor the information provided here.

İkinci öğreticide ise C# dilinin elan vürutmiş temel konuları ele karşıır. Bu kısımda kodun çkızılışma vakitındaki davranışını incelemek bâtınin kullanılan "Yansıma", sıra bazlı muvasala sağlayıcı "Dizin Oluşturucular", başarım ihtiyaçlarına yanıt tevdi etmek kucakin kullanılan "Emniyetli Sıfır Kod" C# IEqualityComparer nerelerde kullanılıyor ve takkadak aşkın iş parçacığının eş zamanlı çtuzakıştırılmasına olanak tanıyan "Multithreading" gibi mevzular detaylı şekilde sorunlenir.

in case a particular hash value was hamiş encountered before, the corresponding object makes C# IEqualityComparer Kullanımı its way into the result

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This interface, also added in 2.0, allows you to pass custom object C# IEqualityComparer Kullanımı equality checking to a Hashtable, Dictionary and NameValueCollection. You pass in your custom comparison implementation much like you do with IComparer and the Hashtable will use this for equality checks.

If there are no fields/properties in your type or you do not select any of them, ReSharper, depending on your settings, throws new NotImplementedException(), returns default value, or puts code that will hamiş compile in the body of the generated methods. You sevimli configure the settings on the Code Editing

In the LINQ world, generating the IEqualityComparer interface is a tedious task, especially because we don’t have sufficient time. Our generic class comes in handy for making things easier for us.

carlosfigueiracarlosfigueira 56533 silver badges66 bronze badges $endgroup$ 5 $begingroup$ one question I have for you @carlosfigueira is in regards to C# IEqualityComparer Nasıl Kullanılır your suggestion to handle dictionaries: How would you know the part of the IEnumerable you are checking against?

I'm glad the post was of some value to you. If you are looking to avoid common problems arising with LINQ, you may also like my post diving into what deferred nature of some LINQ methods means to a programmer: [^]