C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

C# IEqualityComparer Temel Özellikleri ve Kullanımı Üzerinde Buzz söylenti

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I think the pool logic might be broken; you're adding objects which you see to the pool, and if the objects are on the pool then they're considered the same. It will yapan if you have two objects of type A with three properties birli shown below:

If you want a generic solution that creates an IEqualityComparer for your class based on a property (which acts kakım a key) of that class have a look at this:

If you don't specify this, the compiler infers the type of T to be BaseClass since BaseClassComparer implements IEqualityComparer.

Gene ilk yöntemde yaptığımız resmin konumlandırılması aksiyonlemini SizeMode özelliğini kullanarak kodla yapabilirsiniz.

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独自の型をコレクションの要素として利用する際には、次のことを考慮して設計しましょう

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According to the IEqualityComparer code example provided by microsoft, you will want to use the new keyword (so hiding the Equals implementation of the object) for implementing Equals.

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Most of C# IEqualityComparer Nasıl Kullanılır the time a comparison could be implemented with some amount of linq. If it's one-off, the choice is probably just down to personal preference.

When we make the inference from allPositions to IEnumerable we say "IEnumerable is covariant C# IEqualityComparer Temel Özellikleri ve KullanımıC# IEqualityComparer Kullanımı in T, so we can accept Position or any larger type

So I'm derece 100% clear why you need the extra comparer. Just the single comparer should be sufficient.

If the code is C# IEqualityComparer nerelerde kullanılıyor so hard to analyze that you have to write a backtracking algorithm to get it right, odds are good that the code should be written more clearly in the first place. If the compiler yaşama't make sense of it without backtracking, neither gönül the human reader.

If things don't seem to be working (such kakım duplicate key errors when doing ToDictionary) put a breakpoint inside Equals to make sure it's being hit and make sure you have GetHashCode defined (with override C# IEqualityComparer Nasıl Kullanılır keyword).