En iyi Tarafı C# IEqualityComparer Nasıl Kullanılır
En iyi Tarafı C# IEqualityComparer Nasıl Kullanılır
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The last statement basically means that in case we rely on Equals(..) method we could calculate hash based only on the last name and the result will still be the same:
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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?
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Your GetHashCode implementation always returns the same value. Distinct relies on a good hash function to work efficiently because it internally builds a hash table.
Please also note the use of the BindingFlags parameter so you dirilik restrict the properties to only the public ones and the ones on instance-level.
The issue here is that comparing floating-point numbers for equality might not work bey expected, due to minute rounding errors. There are different methods of comparing floating-point numbers for near-equality
@pinkfloydx33 Your comment is the C# IEqualityComparer nerelerde kullanılıyor correct answer btw. OP just messed up the interface they need to implement.
Oralk, eşitliği farklı bir şekilde tanımlayan bir müsavat karşılaştırıcısıyla yeni baştan oluşturulur: Birimleri nüshaysa dü kutu hemayar olarak kabul edilir.
into account, so the fact that it chooses a type that is incompatible with the assigned-to C# IEqualityComparer nerelerde kullanılıyor variable is not it's business.
If there are no fields/properties in your type or you do hamiş select any of them, ReSharper, depending on your settings, throws new NotImplementedException(), returns default value, or C# IEqualityComparer Kullanımı puts code that will not compile in the body of the generated methods. You yaşama configure the settings on the Code Editing
Ayrıca C# IEqualityComparer Kullanımı fevkda anlattığımız IndexOf metodunu Temel liste üzerinden madun listelerdeki elemanlar muhtevain kullanamazsınız. Asıl liste üzerinden ast listelerin index sırasını bulabilirsiniz.
However, choosing the more C# IEqualityComparer nedir specific type Giraffe: return value kişi implicitly be cast to a larger type Animal if needed; and a return type of IEnumerable implicitly casts to IEnumerable. And that's the most used variant interface. I wonder why the more general type was chosen?
As we saw above, it doesn’t take much code. Birli our mostra evolves, we’ll likely have to extend our comparers, so always thinking about what “equal” means now and what it could mean in the future is a valuable exercise.