Teşhismladığımız enum’ın bütün elemanlarını listelemek istersek bu harf bizlere muhakkak yardımcı olacaktır.
When you find yourself really to need this because you have to many properties you probably have some basic sorun birli your class is doing too much.
Alternatively, you can write an empty comparer class that implements IEqualityComparer, and then pick the corresponding quick-fix from the Ast+Enter menu:
Make the properties / fieldInfos fields static; they don't change for each closed instance of the type PropertiesByValueComparer (i.e., for each T passed to it), so you don't need to initialize them for every new instance of the comparer
The IEqualityComparer interface supports only equality comparisons. Customization of comparisons for sorting and ordering is provided by the IComparer interface.
Scroll down to the part on KeyEqualityComparer and especially the part on the importance of GetHashCode. There is a whole discussion on why obj.GetHashCode(); (as suggested by DMenT's post) is wrong and should just return 0 instead.
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Comparing types is optional and depends on your C# IEqualityComparer Kullanımı inheritance structure, but in this case, if the two players aren’t the same type, then they are derece equal.
What US checks and balances prevent C# IEqualityComparer Temel Özellikleri ve Kullanımı the FBI from raiding politicians unfavorable to the federal government?
LeeLee 143k2020 gold badges238238 silver badges289289 bronze C# IEqualityComparer Kullanımı badges Add a comment
Kakım we can see, to satisfy the interface, we need to implement two methods: Equals and GetHashCode. Additionally, we need to take note that this interface is a contravariant interface.
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
And yes, after this the output of the izlence doesn't change at all. So, what the hell is LINQ doing and why doesn't it even try to use the equality comparer that we have provided? The situation was even bitter for me because I was trying to use Distinct() combined with custom equality comparer to prepare veri for pushing to veri base, so I ended up with SQL Server telling me that I am breaking a primary C# IEqualityComparer nedir key constraint. Because of being focused on a broader mesele I didn't take time to think over the stuff that I was trying to use. What I missed was the fact that LINQ, being a query engine, tries to perform as efficiently as possible.
Bootcamp programları uygulayım bilimi düzında kariyer yapmayı hedefleyen ve bu yönde terbiye almayı C# IEqualityComparer nedir arzulayan her insana açıktır.