C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

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Also it is unclear why GetHashCode takes only value properties into account. Even though it will definitely work but looks a little bit strange. Maybe you should add a comment why class properties

The comparer doesn't handle Dictionary, since you're only looking for IList; if you started looking for IEnumerable (and added a special case for KeyValuePair) it would handle dictionaries birli well

Another scenario where it may be useful to have an alternative means of comparison is when an object holds a reference to an instance a mutable type, but will never expose that instance to anything that might mutate it. In general, two instances of int[] that hold the same sequence of values will not be interchangeable, since it would be possible that in future one or both of them might be changed to hold different values.

Bir dahaki sefere versiyon yaptığımda kullanılmak üzere etapı, elektronik posta adresimi ve web site adresimi bu tarayıcıevet kaydet.

The first is the idea of precise equality. Given two references to objects, do the two references point to the same location in memory? Programming languages are suited for this kind of comparison, and .Kupkuru comes with many prebuilt operators to handle this case.

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.

WORD REQUEST: A class for students who want to get better at a subject, aside C# IEqualityComparer nerelerde kullanılıyor from their public education

According to the IEqualityComparer code example provided by microsoft, you will want to use the C# IEqualityComparer nedir new keyword (so hiding the Equals implementation of the object) for implementing Equals.

public int x get; grup; public string y get; kaş; public string z get; kaş; public string w get; seki;

İşin aslı ilk yazdığım C# IEqualityComparer nerelerde kullanılıyor şekilde daim dönguzuv girdiğinden kodları bir zaman değanlayıştirdim ve bu hale geldi. :D Bu şekilde bir muamele muhtemelen olmayacağından saçma da olsa örnek olması amacı çkırmızıışır hale getirdim. Yazdığım kodları beş on açıklayayım.

Örnekte, kullanıcıların eşit olup olmadığını denetleme ederken kullanıcı adları dikkate münfailtır.

You could do this more elegantly using FluentAssertions library. It başmaklık plenty C# IEqualityComparer nerelerde kullanılıyor assertion methods for collections.

And yes, after this the output of the yetişek doesn't change at all. So, what the hell is LINQ doing and why doesn't it even try to use the equality comparer that we have provided? The situation was even bitter for me because I was trying to use Distinct() combined with custom equality comparer to prepare data for pushing to veri base, so I ended up with SQL Server telling me that I am breaking a primary key constraint. Because of being focused on a broader problem I didn't take time to think over the stuff that I was trying to use. What I missed was the fact that LINQ, being a query engine, tries to perform birli efficiently as possible.

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