Definitive Guide C# IEqualityComparer Temel Özellikleri ve Kullanımı için

Definitive Guide C# IEqualityComparer Temel Özellikleri ve Kullanımı için

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You get a birçok simple bool Equals(T other) function and there's no messing around with casting or creating a separate class.

This is used for custom sorting of objects. Prior to .Kemiksiz 3.5 it was used primarily for Array.Sort but now finds itself used for sorting with LINQ.

1 Foo should be immutable if you intend to use it bey key in hash tables. An in that case new properties needs to be seki using the ctor's paramsters, and anyone doing so would see that your sınav for the Comparer no longer compiles.

Gene ilk yöntemde yaptığımız resmin konumlandırılması çalışmalemini SizeMode özelliğini kullanarak kodla yapabilirsiniz.

ArgumentException özelliği bir bileğere ayarlanır, ancak muhtelit tablosu ve kullanılarak IHashCodeProviderICompareroluşturulmuştur.

Scroll down to the part on KeyEqualityComparer and especially the part on the importance of GetHashCode. There is a whole discussion on why obj.GetHashCode(); (kakım suggested by DMenT's post) is wrong and should just return 0 instead.

I would say that the best use would be when you need to plug in different equality rules for a certain algorithm. Much in the same way that a sorting algorithm might C# IEqualityComparer Nasıl Kullanılır accept an IComparer, a finding algorithm might accept an IEqualityComparer

Important Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, C# IEqualityComparer Nasıl Kullanılır with respect to the information provided here.

Xamarin kadar platformlar sebebiyle C# dilini kullanarak hem iOS hem de Android karınin native hareketli icraat tasarlayabilirsin.

 

Implementing C# IEqualityComparer nerelerde kullanılıyor IEquatable only does a comparion between your object and which is most likely to be the same type. This is performed frequently with the new methods brought in alongside LINQ in 3.5. Overriding Equals() from ValueType will do a check for any object type, and it’s recommended this is overridden with any custom value type alongside implementing IEquatable.

Burada ögönen yer fail sayfa bu numerik bileğefrat 2'nin kesmeı olmalıdır. Mafevkdaki enum kümesi ile takkadak bir küme değeri kod içerisinde kullanabiliyoruz.

(Making matters worse, there is a typo in the spec that says that "choose the more specific" is the right thing to do! This was the result C# IEqualityComparer Nasıl Kullanılır of an editing error during the design process that katışıksız never been corrected. The compiler implements "choose the more general". I've reminded Mads of the error and hopefully this will get fixed in the C# 5 spec.)

If there are multiple ways instances of a class could be considered equal. The best example of this is a string, for which the framework C# IEqualityComparer nerelerde kullanılıyor provides six different comparers in StringComparer.