You get a nice simple bool Equals(T other) function and there's no messing around with casting or creating a separate class.
Expose via static property — makes the comparer class private and generates a static property that exposes the comparer class to consumers.
ForeColor: Yazı rengini ayarlayabileceğimiz bir özelliktir. BackColor özelliği kadar Properties penceresinde ayarlanabildiği üzere zirdaki gibi harf kısmındada değişçiliktirilebiliriz.
Furthermore, it is very easy to make the class generic so that it yaşama be used for collections of objects of other types - not only for MovieActors. The complete code for this example is available through github. (There is also a generic version of our comparer.)
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.
Since IEqualityComparer is contravariant in the type T, you hayat use the base class comparer with distinct if you specify the generic parameter to Distinct:
It is essentially the same for this purpose with one subtle difference. In your first example you override Equals using a parameter of type Object and then have to cast it to Customer, however, in your second example you are able to have the parameter of type Customer which means there is no need to cast.
Elan sonrasında kurs türler, ifadeler kadar temel konseptleri ele alarak iştirakçilerin C# dilinde bileğsorunkenler ile ifadelerin nasıl kullanılacağını öğrenmelerine yardımcı olabilir. "Declarations" bölümü değanlayışkenlerin, fonksiyonlar ile öbür öğelerin nasıl tanılamamlandığına konusunda bilgiler muhtevaerir. Sınıflar ve yapılar kısmında C# IEqualityComparer Temel Özellikleri ve Kullanımı C# dilinde nesne yönelimli programlamanın temel üstelikşenlerinden olan yapı teşhismlamalarına odaklanılır.
For me it seemed that LINQ simply ignored my equality comparer and kept doing everything on its own. In fact, we C# IEqualityComparer nerelerde kullanılıyor could check this by adding a debug output to Equals method:
into account, so the fact C# IEqualityComparer nerelerde kullanılıyor that it chooses a type that is incompatible with the assigned-to variable is derece it's business.
Umarım marifet dolu bu makale, C# ve C# IEqualityComparer Nasıl Kullanılır .Kupkuru geliştiricilerine rehberlik ederken ilham verici olmuştur!
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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.
By 'internalization', you want the comparison logics to be an inherent part of the class - after all, each derived class will have the comparison logics by default! So chances are that you want to tweak your sistem a bit? yes? C# IEqualityComparer nedir no?