C# IEqualityComparer Nasıl Kullanılır - Genel Bakış

C# IEqualityComparer Nasıl Kullanılır - Genel Bakış

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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.

ReSharper provides the Generate equality comparer command to automate generation of the comparer class.

This said, let's return to our ActorComparer. You might suggest that to achieve the goal we need to perform some more complex modifications, but no - all we have to do is use the comparer the new way:

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

In other words support the use of this interface if you are developing a custom collection and you want to allow your consumers to control equality which is used in a number of LINQ and collection related methods (eg. Sort).

I have a list of custom object where I am trying to remove duplicate records. 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.

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:

You could possibly create a GenericComparer with a generic parameter which is C# IEqualityComparer Kullanımı constrained to be at least of base class which might get you closer to what you are trying to do. This would look like

I've assumed that you want to select ItemWrapper - it's hard to tell without seeing the types involved, but that looks likely to be what you want.

Where did the pronunciation of the word "kilometer/kilometre" as "kl OM iter" rather than "KILL o meeter" originate?

1 @Boiethios Then you might introduce some dirty-flag that determinaes if C# IEqualityComparer Nasıl Kullanılır your object was modified istead of constantly checking all properties if they are still same as what you have in the database.

You could do this more elegantly using FluentAssertions library. It has plenty assertion methods for collections.

(Making matters worse, there is a typo in the spec C# IEqualityComparer Nasıl Kullanılır that says that "choose the more specific" is the right thing to do! This was the result of an editing error during the C# IEqualityComparer Temel Özellikleri ve Kullanımı design process that katışıksız never been corrected. The compiler implements "choose the more general". I've reminded Mads of the error and hopefully C# IEqualityComparer Temel Özellikleri ve Kullanımı this will get fixed in the C# 5 spec.)

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