Definitive Guide C# IEqualityComparer nerelerde kullanılıyor için

Definitive Guide C# IEqualityComparer nerelerde kullanılıyor için

Blog Article

IEqualityComparer is a generic .Kemiksiz interface that allows implementing customized equality comparison for collections.

This way, you birey implement a test that fails if any properties are added. Of course, you'd have to add new properties to the array at the beginning. Bey using reflection is an expensive operation from a performance point of view, I'd propose to use it in the sınav, not in the comparer itself if you need to compare lots of objects.

As far bey best practices around using this interface for your own purposes. I would say that the best practice would be to use it when you are deriving or implementing a class that özgü similar functionality to the above mentioned .

$begingroup$ I have a custom PropertiesByValueComparer and am fairly happy how it behaves for simple classes. I haven't included comparing by fields yet. Is there anything that is blatantly eden about this, or do you have other recommendations?

Bir çok zeban kadar C# da bize enum tasarrufı midein keyword katkısızlar ve “enum” bize özelleştirelebilir enum sınıfları tanılamamlamımıza yardımcı evet.

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.

I am trying to generate a listbox of items that is a concatenation of two strings. I have created a class that implements IEqualityComparer and I want to make this list distinct.

@pinkfloydx33 Your comment is the correct answer btw. OP just messed up the C# IEqualityComparer nedir interface they need to implement.

Going with your example, say that you wanted to compare the objects ignoring case, so that "Apple" and "apple" would be considered the same object. Then C# IEqualityComparer nedir your ProductComparer may look like:

operating on different types of classes, even complex types including sub-objects or nested lists. And hamiş only on simple C# IEqualityComparer nerelerde kullanılıyor classes comprising only primitive type properties.

You could be passing, via extension method, a ReadOnlyCollection and they would still be able to evaluate through it. They cannot, then, alter the original collection, C# IEqualityComparer nedir because the original collection could be written in any number of ways.

You could do this more elegantly using FluentAssertions library. It katışıksız plenty assertion methods for collections.

No property will be C# IEqualityComparer nedir added at runtime. I only want to ensure that nobody modify this class without make some test red. We are hundreds in the team and some guy could modify the class without notice side effects.

Where did the pronunciation of the word "kilometer/kilometre" as "kl OM iter" rather than "KILL o meeter" originate?