En iyi Tarafı C# IStructuralEquatable nerelerde kullanılıyor
En iyi Tarafı C# IStructuralEquatable nerelerde kullanılıyor
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If equality is hamiş needed for the derived class you gönül skip IEquatable but you need to override the CanEqual to prevent it being equal with base classes (unless of course they should be considered equal).
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g. MyType and Object) which will still use the identity comparison. I suspect it's not a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and
As far birli I see this is only exposed through the StructuralComparisons class. The only way I emanet figure out to make this useful is to make a StructuralEqualityComparer helper class kakım follow:
This code technically works, but is sort of a hot mess and is hamiş really maintainable. Anyone using the library would have to write this code as well. The next logical step would be to just use .Equals on the entire metrics.
– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.
1 My understanding is that it's used for collection like types, and encapsulates the structural part of the comparison, but leaved the comparison of the elements to a comparer passed in by the user. But I'm not really sure if I really got it.
In my implementation I delegated the task of calculating hash codes to the internal array. While testing it, to my great surprise, I found that my two different arrays had the same structural hash code
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Bu örnekte, articles1 ve articles2 dizileri aynı makale mirlıklarına aynı sırada iye olduğundan, CompareTo metodu 0 döndürerek bu dizilerin yapısal olarak bedel olduğunu belirtir.
Net on a certain ortam, I'm compelled to issue the standard warning derece to rely on the values of hashcodes or how they are computed, since it is derece guaranteed to be the same across updates or platforms.
Ha, makalede nekais olabilir. Bunu tenkit olarak kabul ediyorum. Fonksiyonel programlamada struct kullanılmasının nedenini bile bilmiyor, performans ve diğer konular üzerine da herhangi bir rey barındırmıtefsir. Siz biliyorsanız lütfen aydınlatır mısınız?
You observations does derece conflict with the documentation and there is no bug in the implementation.
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