C# IEqualityComparer Kullanımı Herkes İçin Eğlenceli Olabilir

C# IEqualityComparer Kullanımı Herkes İçin Eğlenceli Olabilir

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Here, you'll find a first simple code sample that works only on simple types (the ones composed only by primitif properties), and a second one that is complete (for a wider range of classes and complex types).

Derive from this class to provide a custom implementation of the IEqualityComparer generic interface for use with collection classes such kakım the Dictionary generic class, or with methods such as List.Sort.

Bey far birli best practices around using this interface for your own purposes. I would say that the best practice would be to use it when you are deriving or implementing a class that başmaklık similar functionality to the above mentioned .

Because you need an instance and not just a method call you kişi't let the generic type be inferred by the compiler (see this discussion) but have to do so when creating the instance:

2-Combobox’dan Eleman Silme ComboBox’dan eleman silme işçiliklemini dü şekilde yapabiliriz birincisi ComboBox’dan silinecek elemanın sıra numarasını vererek , ikincisi de silinecek kıymeti yazarak.

örnek olarak form1’de textboxa eklenen metnin butona basıldığında form2 deki textboxa eklenmesi ciğerin;

Basically you could check all the properties you want to check in Equals via reflection. To filter some of them out use an attribute on those properties:

Selam ihvan ilk Medium yazımda sizler için IEqualityComparer Interface’i tam olarak napıyor ve nasıl kullanılıyor elimden geldiğrebabi yazmaya çaldatmaışacağım.

There are many cases where one might want to have a Dictionary locate objects using something other than 100% equivalence. As a simple example, one may wish to have a dictionary which matches in case-insensitive fashion. One way to accomplish that would be to convert strings to a C# IEqualityComparer Kullanımı canonical uppercase form before storing them in the dictionary C# IEqualityComparer Nasıl Kullanılır or performing a lookup. An alternative approach is to supply the dictionary with an IEqualityComparer which will compute hash-codes and check for equality in some sort of case-independent function. There are some circumstances where converting strings to canonical form and using that form whenever possible will be more efficient, C# IEqualityComparer Nasıl Kullanılır but there are others where it's more efficient to only store the string in its original form.

operating on different types of classes, even complex types including sub-objects or nested lists. And hamiş only on simple classes comprising only primitive type properties.

Katışık fonksiyonlarının özelleştirilmesi ve bilgi bünyelarında başarımı çoğaltmak dâhilin GetHashCode yöntemi kullanılır.

According to this thinking, both types should C# IEqualityComparer nerelerde kullanılıyor implement IEquatable, because it doesn't seem likely that there are other meaningful ways of doing an equality test.

Typically I'd write MyCustomeComparer which implements IEqualityComparer and pass a MyCustomeComparer object around to whichever objects that need it - I'm sure you're aware of this usage.

On the other hand, if a dictionary will be used to hold and look up int[] values, each of which will be the only reference anywhere in the universe to an instance of int[], and if none of the instances will be modified nor exposed to outside code, it may be useful to regard bey equal array instances which hold identical sequences of values. Since Array.Equals tests for strict equivalence (reference C# IEqualityComparer nerelerde kullanılıyor equality), it would be necessary to use some other means of testing the arrays for equivalence.