C# IEqualityComparer Nasıl Kullanılır Için 5-İkinci Trick

C# IEqualityComparer Nasıl Kullanılır Için 5-İkinci Trick

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You get a birçok simple bool Equals(T other) function and there's no messing around with casting or creating a separate class.

When you find yourself really to need this because you have to many properties you probably have some basic sıkıntı kakım your class is doing too much.

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Furthermore, it is very easy to make the class generic so that it emanet be used for collections of objects of other types - not only for MovieActors. The complete code for this example is available through github. (There is also a generic version of our comparer.)

The IEqualityComparer interface supports only equality comparisons. Customization of comparisons for sorting and ordering is provided by the IComparer interface.

The second form is logical equality. Anyone who katışıksız worked with databases understands the idea of identifiers and their use case for distinguishing sameness. Developers define reasons for equality in code, but the logic gönül be composed of smaller precise equality comparisons.

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

Programcının kullanılacak parametre adetsı üzerine herhangi bir ön bilgisinin olmadığı durumlarda.

Xamarin gibi platformlar yardımıyla C# dilini kullanarak hem iOS hem bile Android bağırsakin native mobil icraat tasarlayabilirsin.

Elan bir araba bilgelik yürekin Microsoft Learn’daki “C# 12'de Neler Yeni” C# IEqualityComparer Nasıl Kullanılır sayfasına ve Roslyn Özellik Durumu sayfasına bölüm atabilirsiniz. Siz bile bu teceddütçi özellikleri deneyerek yazılım geliştirme deneyiminizi vüruttirebilirsiniz.

You could be passing, via extension method, a ReadOnlyCollection and they would still be able to evaluate through it. They cannot, then, alter the original collection, because the original collection could be written in any number of ways.

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

Equals/GetHashCode hamiş only internalizes comparison logic, but C# IEqualityComparer nerelerde kullanılıyor also globalize them. There might be cases where I would like internal comparison (not using collection) for just one time.