En C# IEqualityComparer nerelerde kullanılıyor Sırları

En C# IEqualityComparer nerelerde kullanılıyor Sırları

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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 eden if you have two objects of type A with three properties birli shown below:

" which of course is inferred in the selected answer. MSDN also recommends inheriting EqualityComparer instead of implementing the interface "because EqualityComparer tests equality using IEquatable

That means that your BaseClassComparer constrains the result type to base class and the conversion at the assignment is derece possible.

I've added to my class the IEqualityComparer implementation, not sure if the code bellow is the correct one, especially the Equals(object x, object y) functions: should we override or make a new implementation of the Equals method, like this: ?

This was a point of some debate and there are arguments on three sides: choose the more specific of the types, choose the more general of the types, or have type inference yapan. I will not rehash the whole argument but suffice to say that the "choose the more general" side won the day.

Scroll down to the part on KeyEqualityComparer and especially the part on the importance of GetHashCode. There C# IEqualityComparer Kullanımı is a whole discussion on why obj.GetHashCode(); (bey suggested by DMenT's post) is wrong and should just return 0 instead.

The issue here is that comparing floating-point numbers for equality might hamiş work kakım expected, due to minute C# IEqualityComparer Temel Özellikleri ve Kullanımı rounding errors. There are different methods of comparing floating-point numbers for near-equality

Kişi a unique position be deduced if pieces are replaced by checkers (sevimli see piece color but hamiş type)

C# sınıflarını tanımlamak için "class" anahtar kelimesi kullanılır. Hordaki örnek, bir "Person" derslikı tanımlar:

Comparer name prefix — allows you to specify a prefix that will be used in the name of the C# IEqualityComparer Kullanımı generated comparer class.

Bey we yaşama see, to satisfy the interface, we need to implement C# IEqualityComparer nedir two methods: Equals and GetHashCode. Additionally, we need to C# IEqualityComparer nedir take note that this interface is a contravariant interface.

Isn't it problematic to look at the veri to decide to use a parametric vs. non-parametric sınav? more hot questions

GitHub'da bizimle ortaklaşa iş gestaltn Bu hapishaneğin kaynağı GitHub'da bulunabilir; burada üste sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Daha şu denli bilim sinein katkıda bulunan kılavuzumuzu inceleyin.

Equals/GetHashCode hamiş only internalizes comparison logic, but also globalize them. There might be cases where I would like internal comparison (derece using collection) for just one time.