5 Temel Unsurları için C# IEqualityComparer Temel Özellikleri ve Kullanımı

5 Temel Unsurları için C# IEqualityComparer Temel Özellikleri ve Kullanımı

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Provides an equality check when there is only one way of comparing the objects (implemented inside the class)

Note that IEqualityComparer may (and should) be used to perform more complex comparisons, however its implementation won't get much more complex in most cases.

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.

Hash functions that are used to generate hash codes, actually do one thing: they project elements from some data kaş to a smaller veri grup (the grup of hash codes). The former might be almost anything, while the latter is usually the kaş of integers.

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.

Params anahtar lügat kullanmaını gösteren cılız bir yetişek yapalım. Parametre olarak int tipinde bir dizi alacaktır.

İkinci öğreticide ise C# dilinin henüz gelişmiş temel mevzuları ele karşıır. Bu C# IEqualityComparer nedir kısımda kodun çalışma zamanındaki davranışını incelemek muhtevain kullanılan "Yansıma", silsile bazlı erişim sağlayan "Dizin Oluşturucular", performans ihtiyaçlarına cevap vermek muhtevain kullanılan "Emniyetli Sıfır Kod" ve takkadak çokça iş parçacığının eş zamanlı çdüzenıştırılmasına imkân teşhisyan "Multithreading" üzere konular detaylı şekilde nöbetlenir.

You could possibly create C# IEqualityComparer Kullanımı a GenericComparer with a generic parameter which is constrained to be at least of base class which might get you closer to what you are trying to do. This would look like

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LeeLee 143k2020 gold badges238238 silver badges289289 bronze badges Add a comment  

... the above suggests I C# IEqualityComparer Temel Özellikleri ve Kullanımı should create a custom collection for any T implementing IEquatable. Would a collection like List have some kind of subtle bug in it otherwise?

According to this thinking, both types should implement IEquatable, because it doesn't seem likely that there are other meaningful ways C# IEqualityComparer nerelerde kullanılıyor of doing an equality sınav.

I strongly disagree: the lecture was needed, and it was taken to heart. The code, bey written, was bad, and based on bad work practice. Derece pointing this out would be a disservice, and hamiş at all helpful, since then the OP couldn’t improve how they work.

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: [^]