C# IEqualityComparer Kullanımı Herkes İçin Eğlenceli Olabilir

C# IEqualityComparer Kullanımı Herkes İçin Eğlenceli Olabilir

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I think the pool logic might be broken; you're adding objects which you see to the pool, and if the objects are on the pool then they're considered the same. It will fail if you have two objects of type A with three properties bey shown below:

" which of course is inferred in the selected answer. MSDN also recommends inheriting EqualityComparer instead of implementing the interface "because EqualityComparer tests equality using IEquatable

Temel komut satırı uygulamalarından kompleks nöbetlevselliklere iye pusatlara kadar her şeyi C# ile tasarlayabilirsin.

IEqualityComparer Interface’i koleksiyonlar bâtınin özelleştirilmiş bir müsavat içinlaştırması sunar bizlere. Doğrusu bir Class için kendi bileğerlerimizi belirleyerek koleksiyonlarda kullanabilmek kucakin müsavat kavramını oluşturabiliriz.

Tutorials Teacher programlama dünyasına intisap etmek veya mevcut bilgisini tevsi etmek isteyenler derunin ülkü platformlardan biridir.

What's the necessary and sufficient condition for a real sequence to be written as the self-convolution of another real sequence?

It is essentially the same for this purpose with one subtle difference. In your first example you override Equals using a parameter of type Object and then have to cast it to Customer, however, in your second example you are able to have the parameter of C# IEqualityComparer Nasıl Kullanılır type Customer which means there is no need to cast.

After inspecting multiple SO questions and answers related to the topic as well bey some other articles I have both found the solution that fitted my needs for the moment and got some understanding of the way C# IEqualityComparer Temel Özellikleri ve Kullanımı IEqualityComparer is actually used by LINQ operators. Here I will try to explain what I got from there.

Going with your example, say that you wanted to compare the objects ignoring case, so that "Apple" and "apple" would be considered the same object. Then your ProductComparer may C# IEqualityComparer Nasıl Kullanılır look like:

Comparer name prefix — allows you to specify a prefix that will be used C# IEqualityComparer nedir in C# IEqualityComparer nerelerde kullanılıyor the name of the generated comparer class.

1 @Boiethios Then you might introduce some dirty-flag that determinaes if your object was modified istead of constantly checking all properties if they are still same birli what you have in the database.

So there you go. In this situation, type inference chooses the more general type and infers that the call means Distinct. Type inference never takes the return type

Equals method instead of the Object.Equals method. but if I look at the implementation, they both use the generic Type:

Doing that you changed the behavior for a single class, what if you need the same logic for other classes? If you need a "generic comparison". That is why you have IEqualityComparer.