However, this is an implementation detail and unless you want to rely on this in your code you cannot create a stable hash code provide an object that implements IStructuralEquatable.
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. 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:
Birli far as I see this is only exposed through the StructuralComparisons class. The only way I can figure out to make this useful is to make a StructuralEqualityComparer helper class birli follow:
It is used by the third example birli an argument to the Equals(Object, IEqualityComparer) method of the IStructuralEquatable interface that tuples implement. It compares two Double or two Single values by using the equality C# IStructuralEquatable Kullanımı operator. It passes values of any other type to the default equality comparer.
The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects.
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I've noticed these two interfaces, and several associated classes, have been added in .Kemiksiz 4. They seem a bit superfluous to me; I've read several blogs about them, but I still kişi't figure out what problem they solve that was tricky before .Kupkuru 4.
Ray BooysenRay Booysen 29.6k1414 gold badges8686 silver badges111111 bronze badges 6 so when you are dealing with objects, is == assumed to only mean the exact same memory address (same instance)
Bu örnekte, articles1 ve articles2 dizileri aynı makale temellıklarına aynı sırada iye olduğundan, CompareTo metodu 0 döndürerek bu dizilerin konstrüktif olarak denktaş bulunduğunu belirtir.
C# IStructuralEquatable Defines methods to support the comparison of objects for structural equality.
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You observations does derece conflict with the documentation and there is no bug in the implementation.
However, this is hamiş so great if you are using the struct in a dictionary birli my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(