C# IEqualityComparer Nasıl Kullanılır - Genel Bakış
C# IEqualityComparer Nasıl Kullanılır - Genel Bakış
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IEqualityComparer is a generic .Kemiksiz interface that allows implementing customized equality comparison for collections.
If the class is defined in such a way that you birey't define it kakım 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).
The CompareTo method would be the default way of ordering your User class, perhaps comparing by Name. If you then decided that you wanted to sort a list of User objects by another property, say Age, you could write a class that implemented IComparer instead of altering CompareTo inside User. This would perform the custom sorting, for example:
When writing programs in C# with the help of LINQ I have come across the IEqualityComparer generic interface several times. The name conveys the purpose of the interface clearly, still, surprisingly, my first attempts to apply it were marked by strong confusion - the thing merely didn't work the way I wanted it to. Moreover, after going to Google and StackOverflow I have noticed that I'm derece the only one to face difficulties with it.
Bu iş nihayetinde koymak istediğinizi bilgisayarınızdaki konumundan seçerek Aç butonuna tıklayın.
You have to change the comparer to also check the new properties. You could achieve this by using reflection but that would make your comparer insanely slow.
C# C# IEqualityComparer Nasıl Kullanılır ile yazılım geliştirirken, nesneleri temsil eden sınıflar oluşturursunuz. Örneğin, bir otomobili söz gelişi fail bir “Otomobil” dershaneı oluşturabilirsiniz. Bu sınıflardan nesneler oluşturarak programınızın temel yapı taşlarını düz yazı edersiniz.
In the plain case, when we need to drop only exact duplicates, the simple Distinct() call will do. The simplest possible example is getting unique C# IEqualityComparer nerelerde kullanılıyor integers from a collection of numbers:
Xamarin kabil platformlar, C# kullanarak hem Android hem bile iOS dâhilin taşınabilir icraat oluşturmanızı katkısızlar.
Contravariance enables use to use a less derived type than that specified by the generic parameter. In our case, we could pass in an object instance instead C# IEqualityComparer nerelerde kullanılıyor of a Player instance.
comparing two objects for values without listing every column See more C# IEqualityComparer nerelerde kullanılıyor linked questions Related
Kakım a matter of style, we C# IEqualityComparer Temel Özellikleri ve Kullanımı could encapsulate the equality comparer in our Player class and expose the IEqualityComparer through a static property.
The same goes for the LINQ operators that accept a comparer. But again, always consider if the equatable behavior that should be intrinsic to the class rather than defined externally.
Where did the pronunciation of the word "kilometer/kilometre" birli "kl OM iter" rather than "KILL o meeter" originate?