The Ultimate Guide To C# IEqualityComparer nerelerde kullanılıyor

The Ultimate Guide To C# IEqualityComparer nerelerde kullanılıyor

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1 Writing code without knowing what it actually does is called cargo cult programming. It’s a surprisingly widespread practice. It fundamentally doesn’t work.

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:

Besides, it allows to use more than one property bey a key, so the next call is absolutely valid and will preserve all actors with the same last name bey long as their first names differ:

CodeFuller's answer will work fine, but kakım an alternative option, you could use MoreLINQ and its DistinctBy method, which would avoid you needing to create a separate class at all:

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.

Properties Default Returns a default equality comparer for the type specified by the generic argument.

I would say that the best use would be when you need C# IEqualityComparer Nasıl Kullanılır to plug in different equality rules for a certain algorithm. Much in the same way that a sorting algorithm might accept an IComparer, a finding algorithm might accept an IEqualityComparer

Comparing types is optional and depends on your inheritance structure, but in this case, if the two players aren’t the same type, then they are not equal.

This interface C# IEqualityComparer nedir allows the implementation of customized equality comparison for collections. That is, you birey create your own definition of equality, and specify that this definition be used with a C# IEqualityComparer nedir collection type that accepts the IEqualityComparer interface.

players: khalidabuhakmeh and nicoleabuhakmeh. Our next step is to implement the IEqualityComparer. Let’s first look C# IEqualityComparer Temel Özellikleri ve Kullanımı at the interface itself.

Örnekte, kullanıcıların hemayar olup olmadığını yoklama ederken kullanıcı adları dikkate münfailtır.

According to this thinking, both types should implement C# IEqualityComparer Temel Özellikleri ve Kullanımı IEquatable, because it doesn't seem likely that there are other meaningful ways of doing an equality sınav.

Yeni bir valör tipi bileğanlayışkeni oluşturulduğunda, bellekte yeni bir saha ayrılır ve bu düz yalnızca ilgili bileğhizmetkenin değerini sineerir.

Or if you need to change how the comparer sorts, that you have to change them all? Lets say you do that comparison in 500 places, some in 3rd party code, now you have a maintenance nightmare.