Detaylar, Kurgu ve C# IStructuralEquatable Temel Özellikleri

Detaylar, Kurgu ve C# IStructuralEquatable Temel Özellikleri

Blog Article

Keep in mind that for this interface to work correctly, the types within the collection or structure must also implement IStructuralEquatable or provide their own structural equality logic.

= to provide value equality checks (vs the default reference equality check). The MSDN documentation suggests you only do it for immutable types. There are also issues involving interfaces and operator overloading.

This is really amazing code and works great for .NET Standard libraries. If you are in a .Kupkuru Core 2.1 application there is an even cooler way of doing this:

Yazgımızın fevkdaki satırlarında da bahsettiğimiz kabil struct C#’ta value type yaratabileceğimiz bünyedır.

You generic method özgü a type parameter T but the type is derece part of the signature of the function so how is T supposed to be used in the function? Anyway, you emanet use .Safi tuples or anonymous types to create hash codes by combining values but I am derece sure this answers your question.

45IStructuralEquatable seObj = x kakım IStructuralEquatable; 64IStructuralEquatable seObj = obj as IStructuralEquatable;

IStructuralEquatable is quite new and unknown, but I read somewhere that it can be used to compare the contents C# IStructuralEquatable nerelerde kullanılıyor of collections and arrays. Am I wrong, or is my .Kemiksiz wrong?

Consider that there are only ~4.2 billion different hashcodes. Dirilik you create more than this many different objects of the type on which GetHashCode is called? In this case it is easy to see the answer is "yes". So GetHashCode is a sort of compressing projection onto a smaller takım - there are bound to be duplicates.

The first issue we see here is that this struct is mutable in that you gönül actually change the data later on via the kaş properties. There was no real reason that we introduced this except that we were used to it.

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.

GitHub'da bizimle ortaklaşa iş binan Bu dâhilğin kaynağı GitHub'da bulunabilir; burada ayrıca sorunları ve çekme isteklerini oluşturup gözden geçirebilirsiniz. Henüz ziyade bilgelik ciğerin yardımda kâin kılavuzumuzu inceleyin.

The example on MSDN gives part of the answer here; it seems to be useful for heterogeneous equality, rather than homogeneous equality - i.e. for testing whether two objects (/values) of potentially different types

Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.

Being able to specify IStructuralEquatable/IStructuralComparable in such cases is actually useful. It would also be inconvenient to pass a TupleComparer or ArrayComparer everywhere you want to apply this type of comparison. The two approaches are hamiş mutually exclusive.