5 Temel Unsurları için C# IEqualityComparer Nasıl Kullanılır
5 Temel Unsurları için C# IEqualityComparer Nasıl Kullanılır
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1 Writing code without knowing what it actually does is called cargo cult programming. It’s a surprisingly widespread practice. It fundamentally doesn’t work.
This is used for custom sorting of objects. Prior to .Kupkuru 3.5 it was used primarily for Array.Sort but now finds itself used for sorting with LINQ.
When i am using dictionaries sometimes I have to change the default Equals meaning in order to compare Keys. I see that if I override the Equals and GetHashCode on the key's class or i create a new class which implements IEqualityComparer I have the same result. So what's the difference between using IEqualityComparer and Equals/GethashCode Override?
Hamiş surprisingly, the izlence prints out our list of actors and despite Mr. Clooney's excellency he is mentioned only once there:
In other words support the use of this interface if you are developing a custom collection and you want to allow your consumers to control equality which is used in a number of LINQ and collection related methods (eg. Sort).
Scroll down to the part on KeyEqualityComparer and especially the part C# IEqualityComparer Nasıl Kullanılır on the importance C# IEqualityComparer nedir of GetHashCode. There is a whole discussion on why obj.GetHashCode(); (as suggested by DMenT's post) is wrong and should just return 0 instead.
Bu özellik, özürlü kullanıcılar karınin ekran okuyucu mukayyetmlar veya sair yardımcı teknolojiler aracılığıyla kullanılabilir.
Tamam her şeyi tanılamamladık çok esaslı üs kısıntı geçelim pratikte bunu C# IEqualityComparer Kullanımı nasıl yapacağız? Listemizi doğrusu tanılamamlamıştık kaldığımız yerden devam edelim.
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Where did the pronunciation of the word "kilometer/kilometre" as "kl C# IEqualityComparer Kullanımı OM iter" rather than "KILL o meeter" originate?
On the other hand, if there are several equally reasonable methods of comparing two Ts for equality, IEqualityComparer would seem more appropriate: This interface is not meant to be implemented by T itself, but by other "external" classes.
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(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 C# IEqualityComparer Temel Özellikleri ve Kullanımı the result of an editing error during the design process that has 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.)
When implementing interfaces of classes it is important to read the documentation, to know which contract you’re supposed to implement.1