C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

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Also it is unclear why GetHashCode takes only value properties into account. Even though it will definitely work but looks a little bit strange. Maybe you should add a comment why class properties

I'd also suggest small refactoring of FamilySelector class. Currently it holds the data and performs comparison. Usually implementation of IEqualityComparer is a veri-less class that just performs a comparison:

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

Yaşama a unique position be deduced if pieces are replaced by checkers (yaşama see piece color but derece type)

Notice that I didn't have to override Equals, GetHashCode in neither of the classes. I birey use this comparer in any object that implements ICustom without having to rewrite the comparison logic.

The comparer will validate that prop1 is the same (and add B to the pool), then validate that prop2 is the same (and add C to the pool), and when it validates prop3, even though they're different, since both B and C are in the pool, the comparer will consider them to be the same.

I would say that the best use would be when you need to plug in different equality rules for a certain algorithm. Much in the same way that a sorting algorithm might accept an IComparer, a finding algorithm might accept an IEqualityComparer

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 C# IEqualityComparer Kullanımı is different.

I've assumed that you want to select ItemWrapper - it's hard to tell without seeing the types involved, but that looks likely to be what you want.

Henüz şu denli olgun muhtevain Microsoft Learn’daki “C# 12'bile Neler Yeni” sayfasına ve Roslyn Özellik Durumu sayfasına nazar atabilirsiniz. Siz de bu yenilikçi özellikleri deneyerek nominalm ihya deneyiminizi vüruttirebilirsiniz.

On the C# IEqualityComparer nerelerde kullanılıyor other hand, if there are several equally reasonable methods of comparing two Ts for equality, IEqualityComparer would seem more appropriate: This interface is derece meant to be implemented by T itself, but C# IEqualityComparer Temel Özellikleri ve Kullanımı by other "external" classes.

C# c# ref out paramsoutout tasarrufıparamsparams kullanımıref tasarrufı Yazı dolaşımı

What Distinct() actually does C# IEqualityComparer Temel Özellikleri ve Kullanımı here is comparing object references. So our second George Clooney is in fact an independent object C# IEqualityComparer Kullanımı (since it was created independently) and its reference differs from the reference of the first one - therefore it appears in the output twice:

Or if you need to change how the comparer sorts, that you have to change them all? Lets say you do that comparison in 500 places, some in 3rd party code, now you have a maintenance nightmare.