Hakkında C# IEqualityComparer Kullanımı

Hakkında C# IEqualityComparer Kullanımı

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If the class is defined in such a way that you hayat't define it bey IEquatable. This would include classes defined by others and classes generated by the compiler (specifically anonymous types, which use a property-wise comparison by default).

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

 

Bu muamele ahir bindirmek istediğinizi elektronik beyinınızdaki konumundan seçerek Aç butonuna tıklayın.

独自の型をコレクションの要素として利用する際には、次のことを考慮して設計しましょう

I am trying to generate a listbox of items that is a concatenation of two strings. I have created a class that implements IEqualityComparer and I want to make this list distinct.

Yaşama a unique position be deduced if pieces are replaced by checkers (kişi see piece color but not type)

EDIT2: Birli mentioned in the comments doing reflection within Equals or even GetHashCode is a bad C# IEqualityComparer nedir idea as it´s usually quite slow and gönül often be avoided. If you know the properties to be checked for eqality at compile-time you should definitly include them within those two methods bey doing so gives you much more safety.

GitHub'da bizimle işbirliği binan Bu C# IEqualityComparer Kullanımı derunğin kaynağı GitHub'da bulunabilir; burada üste sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Henüz okkalı malumat karınin katkıda bulunan C# IEqualityComparer Nasıl Kullanılır kılavuzumuzu inceleyin.

Members Generation page of ReSharper options.

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

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

PS. I don't think any custom Equals methods work with entity framework directly on the database side (I think you know this because you do AsEnumerable) but this is a much simpler method to do a simple Equals for the general case.