En C# IEqualityComparer nerelerde kullanılıyor Sırları

En C# IEqualityComparer nerelerde kullanılıyor Sırları

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Burada enum kümesinde sıfır bir elemana erişmek isteriz. Runtime da hiç bir problem gerçekleşemez ve bize dijital değeri veya olması müstelzim sayısal kıymeti döner , yanlış bulunduğunun ayırtına varmayız. Gene bile kontrolör etmekte yarar var :)

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

If you don't specify this, the compiler infers the type of T to be BaseClass since BaseClassComparer implements IEqualityComparer.

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This interface allows the implementation of customized equality comparison for collections. That is, you birey create your own definition of equality, and specify that this definition be used with a collection type that accepts the IEqualityComparer interface.

If you change your class to implement IEquatable instead, the implementation of Distinct (which will use EqualityComparer.Default which in turn sees your type implements IEquatable and delegates to that) will work as you expect.

Oluşturduğunuz dershaneı, koleksiyon oluştururken veya katlaştırma müstelzim diğer senaryolarda kullanabilirsiniz.

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

More importantly, I have stepped into the trap of thinking that objects, which I use in my code, güç be only partially relevant to me, while in case we do OOP every object must be considered in its entirety (things like SOLID help us with that.) This way, when implementing the IEqualityComparer interface I should have paid more attention to the presence of GetHashCode(..) method. This would solve my mesele at once, because it is this same method that LINQ uses when asked to extract distinct objects and perform other equality related operations (see Grup operators in this C# IEqualityComparer nerelerde kullanılıyor article). To verify this we add a debug message to the method and observe several calls to it:

C# Mod Ahiz İşlemi , kırmız ile c sharp eğitimimize devam ediyoruz. Bu dersimizde Mod ahiz şu demek oluyor ki bölme hizmetleminden artan bulma sorunlemini göreceğiz. Bu C# IEqualityComparer nerelerde kullanılıyor bahis…

The instructions and examples given here address the use of the feature in C#. For more information about other languages, refer to corresponding topics in the ReSharper by language section.

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

For example if you C# IEqualityComparer nerelerde kullanılıyor class implements IEntity which katışıksız an Id property, you could then use a comparison class for all equality checks that implements IEqualityComparer.

Her dü öğretici bile kullanıcıların C# dilinin temellerini kavramalarını peylemek üzere detaylı ve aşama hamle örneklerle zenginleştirilmiştir.