The Ultimate Guide To C# IEqualityComparer nerelerde kullanılıyor

The Ultimate Guide To C# IEqualityComparer nerelerde kullanılıyor

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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 derece be interchangeable, since it would be possible that in future one or both of them might be changed to hold different values.

演算子（==）と（!=）のオーバーロードを実装します（推奨・必須ではない）

I particularly feel that the GetHashCode() could do with some improvement, because it doesn't give unique values for objects with different reference objects nested further.

Please also note the use of the BindingFlags parameter so you hayat restrict the properties to only the public ones and the ones on instance-level.

Collaborate with us on GitHub The source for this content can be found on GitHub, where you birey also create and review issues and pull requests. For more information, see C# IEqualityComparer Nasıl Kullanılır our contributor guide.

Kişi a unique position be deduced if pieces are replaced by checkers (sevimli see piece color but not type)

Going with your example, say that you wanted to compare the objects ignoring case, so that "Apple" and "apple" would be considered the same object. Then your C# IEqualityComparer nerelerde kullanılıyor ProductComparer may look like:

I've tried using LINQ SequenceEqual but again birli the instances of T are different this returns false;

I birey also make an IEqualityComparer for a C# IEqualityComparer Kullanımı "parent class" and use on classes that inherit. I yaşama have comparer that will behave in a different way, I güç make one to compare Value C# IEqualityComparer nerelerde kullanılıyor instead of Key.

According to this thinking, both types should implement IEquatable, because it doesn't C# IEqualityComparer Temel Özellikleri ve Kullanımı seem likely that there are other meaningful ways of doing an equality sınav.

The same goes for the LINQ operators that accept a comparer. But again, always consider if the equatable behavior that should be intrinsic to the class rather than defined externally.

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