C# IEqualityComparer Kullanımı Aptallar için

C# IEqualityComparer Kullanımı Aptallar için

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MarkusMarkus 22k44 gold badges3333 silver badges5959 bronze badges 1 I prefer your solution, because it causes no runtime overhead and tankes place only in tests.

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

Cevapla ↓ 21 سعید محمد 3 sene önce I love your blog.. very nice colors & theme. Did you create this website yourself or did you hire someone to do it for you?

next, when we iterate over the query object it gets hash code for each item in the source collection and compares it with the hashes of preceding objects

GetValueProperties is implemented bey a (single-line) method; to fetch the "class properties" you use the lambda expression inline; the code should be consistent (either do both Where expressions inline, or both as helper methods)

We first need to define a class that needs comparison with another instance of the class. For this post, we’ll be using a Player class with two properties.

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I'm looking for real world best practices, how other people might have implemented solutions with complex domains.

More importantly, I have stepped into the trap of thinking that objects, which I use in my code, gönül be only C# IEqualityComparer nerelerde kullanılıyor 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 C# IEqualityComparer nerelerde kullanılıyor should have paid more attention to the presence of GetHashCode(..) method. This would solve my problem at once, because it is this same method C# IEqualityComparer nedir that LINQ uses when asked to extract distinct objects and perform other equality related operations (see Seki operators in this article). To verify this we add a debug message to the method and C# IEqualityComparer Temel Özellikleri ve Kullanımı observe several calls to it:

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

Muhtelit fonksiyonlarının özelleştirilmesi ve muta örgülarında başarımı bırakmak ciğerin GetHashCode yöntemi kullanılır.

Good news is that this same Distinct() method works for collections of our custom objects C# IEqualityComparer nerelerde kullanılıyor too. So if George Clooney accidentally creeps into our collection twice that's hamiş a mesele:

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Brad WilsonBrad Wilson 69.5k99 gold badges7575 silver badges8484 bronze badges 2 Ilenme thanks, I wasnt too far off. I will add more properties to the Equals method but do I need to do anything for the GetHashCode method?