C# IEqualityComparer Nasıl Kullanılır Için 5-İkinci Trick

C# IEqualityComparer Nasıl Kullanılır Için 5-İkinci Trick

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IEqualityComparer is a generic .Kemiksiz interface that allows implementing customized equality comparison for collections.

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

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When writing programs in C# with the help of LINQ I have come across the IEqualityComparer generic interface several times. The name conveys the purpose of the interface clearly, still, surprisingly, my first attempts to apply it were marked by strong confusion - the thing merely didn't work the way I wanted it to. Moreover, after going to Google and StackOverflow I have noticed that I'm not the only one to face difficulties with it.

Implementations are required to ensure that if the Equals(T, T) method returns true for two objects x and y, then the value returned by the GetHashCode(T) method for x must equal the value returned for y.

The second C# IEqualityComparer Kullanımı form is logical equality. Anyone who has worked with databases understands the idea of identifiers and their use case for distinguishing sameness. Developers define reasons for equality C# IEqualityComparer nedir in code, but the logic can be composed of smaller precise equality comparisons.

İki farklı ölçü tipi bileğkârkeni birbirinden bağımsızdır ve birinin değeri değustalıktiğinde diğerini etkilemez.

While MSDN is a valuable resource, C# IEqualityComparer Kullanımı don't take everything MSDN says kakım gospel. MSDN contains plenty of bad advice, outdated, badly written or plain wrong content.

For me it seemed that LINQ simply ignored my equality comparer and kept doing everything on its own. C# IEqualityComparer nerelerde kullanılıyor In fact, we could check this by adding a debug output to Equals method:

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C# ta formunuza eklemiş evetğunuz bir resmi kodla duruma bakılırsa tayin etmek yahut tağyir etmek üzere durumlarda bu yöntemi kullanabilirsiniz.

2 It affects other places in a positive C# IEqualityComparer Temel Özellikleri ve Kullanımı way, you generally want to implement it for a data class like this

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Her iki öğretici de kullanıcıların C# dilinin temellerini kavramalarını sahip olmak üzere detaylı ve girişim hamle örneklerle zenginleştirilmiştir.