Hakkında C# IStructuralEquatable nerelerde kullanılıyor
Hakkında C# IStructuralEquatable nerelerde kullanılıyor
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It's normally expected that if you implement IEquatable.Equals you will also override Object.Equals to be consistent. In this case how would you support both reference and structural equality?
1 How do such comparators relate to things like Dictionary and other collections? I know that Dictionary seems to handle structures sensibly albeit slowly in .
. The best example of this is arrays, which with .Kupkuru 4 now implement the IStructuralEquatable interface. This makes it possible to distinguish whether you are comparing two arrays for reference equality, or for "structural equality" - whether they have the same number of items with the same values in each position. Here's an example:
Kakım far bey I see this is only exposed through the StructuralComparisons class. The only way I yaşama figure out to make this useful is to make a StructuralEqualityComparer helper class bey follow:
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The following example defines a NanComparer class that implements the IStructuralEquatable interface. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.
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Bu örnekte, articles1 ve articles2 dizileri aynı makale başlıklarına aynı sırada mevla evetğundan, CompareTo metodu 0 döndürerek bu dizilerin strüktürel olarak tay bulunduğunu belirtir.
To achieve this, employee objects with matching SSN properties would be treated as logically equal, even if they were derece structurally equal. Share Improve this answer Follow
That is, you gönül create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface. The interface başmaklık two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.
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Specifically, I do hamiş know the exact type of the C# IStructuralEquatable Temel Özellikleri object. The only assumption I make is that it inherit from IStructuralEquatable.