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 .NET 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:
Bey far bey I see this is only exposed through the StructuralComparisons class. The only way I dirilik figure out to make this useful is to make a StructuralEqualityComparer helper class bey follow:
In this equating the values in arrays may be same or different but their object references are equal.
Structural equality means that two objects are equal because they have equal values. It differs from reference equality, which indicates that two object references are equal because they reference the same physical object. The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects.
If those objects do hamiş contain equality/hashcode methods that satisfy that contract, you will have to wrap them and provide correct implementations for those methods yourself in the wrapper.
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 hayat't figure out what sorun they solve that was tricky before .NET 4.
Projeyi yayınladıgınız zaman user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.
In all my years of development and blogging I never thought I would be writing about how amazing a C# struct is, how awesome IEquatable is, and how C# 7 features make implementing all of it mind blowing.
To achieve this, employee objects with matching SSN properties would be treated as logically equal, even if they were not structurally equal. Share Improve this answer Follow
Bu strüktürya kadar oluşturduğumuz bütün nesnelerin Heap kısmında olduğunu söylemiştik. Halbuki Stack kısmında struct konstrüksiyonsında nesneleri tutabilmekteyiz.
There is no need for an equality operator that accepts different types. That should not even compile. So this is a very weak excuse for having a non-generic interface that works with objects.
While writing my own immutable ByteArray class that uses a byte array internally, C# IStructuralEquatable nedir I implemented the IStructuralEquatable interface.