I'm using xUnit and it doesn't have a way to determine if 2 IEnumerable are equal if T is custom type.
If you need to support custom GetHashCode() functionality, use the alternative constructor to provide a lambda to do the alternative calculation:
This said, let's return to our ActorComparer. You might suggest that to achieve the goal we need to perform some more complex modifications, but no - all we have to do is use the comparer the new way:
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Notice that I didn't have to override Equals, GetHashCode in neither of the classes. I hayat use this comparer in any object that implements ICustom without having to rewrite the comparison logic.
D StanleyD Stanley 152k1111 gold C# IEqualityComparer nedir badges181181 silver badges249249 bronze badges 1 Thank you for detailed explanation.
The issue here is that comparing floating-point numbers for equality might derece work birli expected, due C# IEqualityComparer Temel Özellikleri ve Kullanımı to minute rounding errors. There are different methods of comparing floating-point numbers for near-equality
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If we call a Distinct LinQ Extension Method, the result would be a new sequence with 7 elements, and we would not find any distinct member.
I think the other post you mention is saying that EqualityComparer implements IEqualityComparer and IEqualityComparer, so you don't have to implement both the C# IEqualityComparer Nasıl Kullanılır generic and non-generic interfaces if you derive from EqualityComparer.
So there you go. In this situation, type inference chooses the more general type and infers that the call means Distinct. Type inference never takes the return type
1 shouldn't this işleyen if collections contains a null? however quick C# IEqualityComparer Nasıl Kullanılır experiment on VS C# Interactive doesn't seem to throw null ref exception!
Araç olmayan sınıf ve konstrüksiyonlar, asli gestaltlandırıcı parametreleri C# IEqualityComparer Temel Özellikleri ve Kullanımı yürekin her hengâm bu davranışı istemeyebilir.