Hakkında herşey C# IStructuralEquatable Nasıl kullanılır

Hakkında herşey C# IStructuralEquatable Nasıl kullanılır

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comparer IEqualityComparer An object that determines whether the current instance and other are equal.

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g. MyType and Object) which will still use the identity comparison. I suspect it's derece a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and

IStructuralEquatable is an interface in C# that defines methods for determining whether two objects are structurally equal. It's often used in scenarios where you want to compare the structure of objects, typically within collections, and not just compare references or individual values.

This code technically works, but is sort of a hot mess and is not really maintainable. Anyone using the library would have to write this code kakım well. The next logical step would be to just use .Equals on the entire metrics.

– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.

1 My understanding is that it's used for collection like types, and encapsulates the structural part of the comparison, but leaved the comparison of the elements to a comparer passed in by the user. But I'm not really sure if I really got it.

Yani anlayacağınız “int” üzere, “bool” üzere kıymet tipli bir değişebilir peydahlamak istiyorsanız struct yapkaloriı tercih edebilirsiniz.

Reading through the excellent blog post by Sergey on struct equality performance he mentions that the default implementations are pretty slow and using boxing for each member. Additionally, he mentions that a memory comparison may derece give you the correct results in this super simple example:

Bu örnekte, articles1 ve articles2 dizileri C# IStructuralEquatable nedir aynı makale mebdelıklarına aynı tam malik başüstüneğundan, CompareTo metodu 0 döndürerek bu dizilerin yapısal olarak denktaş olduğunu belirtir.

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IStructuralEquatable is used with arrays to determine whether the arrays are structurally equal. The StructuralEqualityComparer.Equals method is used for this purpose.

Default property. The second time, it passes the default equality comparer that is returned by the StructuralComparisons.StructuralEqualityComparer property. The third time, it passes the custom NanComparer object. As the output from the example shows, the first three method calls return true, whereas the fourth call returns false.

Specifically, I do derece know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.