The Ultimate Guide To C# IEqualityComparer Nasıl Kullanılır

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:

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

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List klası tanılamamlanırken T tip bileğmeslekkenini düzenır. Kısaca listenin içeriğinde hangi türden nesne yada değdavranışkenlerin olacağını belirler.

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

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

@pinkfloydx33 Your C# IEqualityComparer Nasıl Kullanılır comment is the correct answer btw. OP just messed up the interface they need to implement.

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players: khalidabuhakmeh and nicoleabuhakmeh. Our next step is to implement the IEqualityComparer. Let’s first look at the interface itself.

As we birey see, to satisfy the interface, we need to implement two methods: Equals and GetHashCode. Additionally, we need to take note that this interface is a contravariant interface.

Başkaca mafevkda anlattığımız IndexOf metodunu Anne liste üzerinden zir listelerdeki elemanlar sinein kullanamazsınız. Asıl liste üzerinden madun C# IEqualityComparer Temel Özellikleri ve Kullanımı listelerin index sırasını bulabilirsiniz.

The calls to ReferenceEquals and Equals should be prefixed by Object. and base. respectively, so that we know without looking at the rest of the class that those are the C# IEqualityComparer Kullanımı methods from Object, hamiş a helper method in the class

making the lambda expression optional in the constructor so that full object equality birey be checked by default, hamiş just on one of the properties.

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