If you do decide you need a comparer, you yaşama certainly use a generalized comparer (see DMenT's answer), but if you need to reuse that logic you should encapsulate it in a dedicated class. You could even declare it by inheriting from the generic base:
The comparer doesn't handle Dictionary, since you're only looking for IList; if you started looking for IEnumerable (and added a special case for KeyValuePair) it would handle dictionaries kakım well
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 hamiş be interchangeable, since it would be possible that in future one or both of them might be changed to hold different values.
Not surprisingly, the program prints out our list of actors and despite Mr. Clooney's excellency he is mentioned only once there:
Tutorials Teacher programlama dünyasına iltihak etmek yahut mevcut bilgisini tevsi etmek isteyenler sinein ülküsel platformlardan biridir.
I have a list of custom object where I am trying to remove duplicate records. C# IEqualityComparer nedir I am seeing so many online articles which points towards IEqualityComparer(I've never used this before). Question is, when should I use it? I sevimli achieve same result by LINQ in one line code.
Bu teamüllemden sonra hordaki pencere karşınıza gelecektir. Burada Local resource seçeneğini seçerek Import butonuna matbuat.
If you C# IEqualityComparer nedir look at the definition of Distinct there is only one generic type parameter involved (and not one TCollection used for input and output collections and one TComparison for the comparer).
C# sınıflarını tanımlamak C# IEqualityComparer Kullanımı yürekin "class" anahtar kelimesi kullanılır. Zirdaki örnek, bir "Person" dershaneı teşhismlar:
Common Type System: .Kemiksiz çatısında herhangi bir programlama diliyle yazdığınız bir üstelikşeni diğer bir .Safi diliyle yararlanmaını sağlar.
SnowbearSnowbear 3,66311 gold badge1919 silver badges2323 bronze badges $endgroup$ 2 $begingroup$ If I'm C# IEqualityComparer Temel Özellikleri ve Kullanımı hamiş mistaken, the GetHashCode() function normally takes the object's memory address into it's calculation. I'll have to C# IEqualityComparer Kullanımı do some more reading up on that. $endgroup$
üste yukarıda anlattığımız IndexOf metodunu Ana liste üzerinden alt listelerdeki elemanlar muhtevain kullanamazsınız. Anne liste üzerinden madun listelerin index sırasını bulabilirsiniz.
Finally, if you just need to filter collection for distinct values based on some key and you want to do it quickly with bey few additional actions as possible, there is a trick that doesn't require creating new types:
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