C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

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Here, you'll find a first simple code sample that works only on simple types (the ones composed only by primitif properties), and a second one that is complete (for a wider range of classes and complex types).

When testing two instances for equality you have to make an explicit choice of which IEqualityComparer instance to use.

Temel komut satırı uygulamalarından kompleks mesleklevselliklere malik taşıtlara denli her şeyi C# ile tasarlayabilirsin.

CodeFuller's answer will work fine, but kakım an alternative option, you could use MoreLINQ and its DistinctBy method, which would avoid you needing to create a separate class at all:

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I have a list of custom object where I am trying to remove duplicate records. I am seeing so many online articles which points towards IEqualityComparer(I've never used this before). Question is, when should I use it? I hayat achieve same result by LINQ in one line code.

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in case a particular hash value was hamiş encountered before, the corresponding object C# IEqualityComparer Temel Özellikleri ve Kullanımı makes its way into the result

You will need some properties that will allways be available on your type and that provide a good enough idea of what might be considered C# IEqualityComparer Kullanımı equal. All theadditional properties however should only go into the expensive Equals-method.

The Func is a class standing for something that might be C# IEqualityComparer Nasıl Kullanılır called with MovieActor argument and must yield a result of type object. Although generally I don't like dealing with pure object's in my code, this is a valid way to C# IEqualityComparer nerelerde kullanılıyor define a key selector hamiş bounding it to some specific key type.

1 @Boiethios Then you might introduce some dirty-flag that determinaes if your object was modified istead of constantly checking all properties if they are still same as what you have in the database.

C# ile veritabanlarına erişim sağlayan icraat geliştirebilirsiniz. ADO.Safi C# IEqualityComparer Nasıl Kullanılır gibi teknolojiler, veritabanı etkileşimini kolaylaştırır.

So now we know how to use IEqualityComparer with LINQ and derece make a mess of it. I hope this helps. However, I would like to push our ActorComparer a little further. Kakım you might know, LINQ başmaklık an OrderBy(..) extension method that allows us to sort a collection according to some key.

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