C# IEqualityComparer Nasıl Kullanılır - Genel Bakış

C# IEqualityComparer Nasıl Kullanılır - Genel Bakış

Blog Article

Is it possible to give an unambiguous definition to the concept of “information”? more hot questions

The comparer doesn't handle Dictionary, since you're only looking for IList; if you started looking for IEnumerable (and added a special case for KeyValuePair) it would handle dictionaries birli well

Another scenario where it may be useful to have an alternative means of comparison is when an object holds a reference to an instance a mutable type, but will never expose that instance to anything that might mutate it. In general, two instances of int[] that hold the same sequence of values will hamiş be interchangeable, since it would be possible that in future one or both of them might be changed to hold different values.

Bir dahaki sefere yorum yapmış olduğumda kullanılmak üzere kademı, e-posta adresimi ve web şehir adresimi bu tarayıcıya kaydet.

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).

The second form is logical equality. Anyone who saf worked with databases understands the idea of identifiers and their use case for distinguishing sameness. Developers define reasons for equality in code, but the logic gönül be composed of smaller precise equality comparisons.

WORD REQUEST: A class for students who want to get better at a subject, aside from their public education

You could possibly create a GenericComparer with a C# IEqualityComparer nerelerde kullanılıyor generic parameter which is constrained to be at least of base class which might get you closer to what you are trying to do. This would look like

For me it seemed that LINQ simply ignored my C# IEqualityComparer nerelerde kullanılıyor equality C# IEqualityComparer Temel Özellikleri ve Kullanımı comparer and kept doing everything on its own. In fact, we could check this by adding a debug output to Equals method:

If it is possible, hayat we add an attribute to a property to say that this property is derece relevant in the comparison?

Hayat apophatic theology offer a coherent resolution to C# IEqualityComparer nedir the "problem of the creator of God"? more hot questions

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

Typically I'd write MyCustomeComparer which implements IEqualityComparer and pass a MyCustomeComparer object C# IEqualityComparer Nasıl Kullanılır around to whichever objects that need it - I'm sure you're aware of this usage.

ArgumentException x ve y farklı türlerdedir ve ikisi bile diğeriyle karşılaştırmaları anlayışleyebilir.