You Should Know C# IEqualityComparer Nasıl Kullanılır Göstergeleri
You Should Know C# IEqualityComparer Nasıl Kullanılır Göstergeleri
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Is it possible to give an unambiguous definition to the concept of “information”? more hot questions
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 birli List.Sort.
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:
CodeFuller's answer will work fine, but birli an alternative option, you could use MoreLINQ and its DistinctBy method, which would avoid you needing to create a separate class at all:
Name: Bu özelliği kullanarak vesair kontrollerde bile olduğu kadar şifre kısmında kullanacağımız ismi belirliyoruz. Varsayılan olarak listBox1 , listBox2 .. şeklinde buzakılabileceği kabil kendimiz isteğimize görede bir kişi verebiliriz.
The second form is logical equality. Anyone who başmaklık worked with databases understands the idea of identifiers and their use case for distinguishing sameness. Developers define reasons for equality in code, but the logic kişi be composed of smaller precise equality comparisons.
However you should have some good pre-checks within GetHashCode to avoid unneccessary calls to this slow method.
There are multiple ways to tackle this and tell LINQ how the C# IEqualityComparer Nasıl Kullanılır objects should be compared to each other. I will cover the use of IEqualityComparer. The interface contains two methods:
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into account, so the fact C# IEqualityComparer Kullanımı that it chooses a type that is incompatible with the assigned-to variable is derece it's business.
On the other hand, if there are several equally reasonable methods of comparing two Ts for equality, IEqualityComparer would seem more appropriate: C# IEqualityComparer Nasıl Kullanılır This interface is not meant to be implemented by T itself, but by other C# IEqualityComparer Nasıl Kullanılır "external" classes.
Isn't it problematic to look at the data to decide to use a parametric vs. non-parametric test? more hot questions
No property will C# IEqualityComparer Nasıl Kullanılır be added at runtime. I only want to ensure that nobody modify this class without make some test red. We are hundreds in the team and some guy could modify the class without notice side effects.
The result is the same as when using the first version of ActorComparer, although the new one is much more flexible in the sense that it may be used differently in different contexts and no further modifications are required to its code.