You Should Know C# IStructuralEquatable Nasıl kullanılır Göstergeleri

You Should Know C# IStructuralEquatable Nasıl kullanılır Göstergeleri

Blog Article

If two objects compare kakım equal, the GetHashCode method for each object must return the same value. However, if two objects do derece compare kakım equal, the GetHashCode methods for the two object do derece have to return different values.

Important Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

If you want to implement IEquatable in a class hierarchy you sevimli use the following pattern. It prevents derived (including sibling) classes from being equal.

LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why yaşama't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?

Bildiğiniz gibi new işletmenü classlarda kullanıldığı saat müntesip classtan bir nesne dilek edilmekte ve üretilen nesne belleğin Heap kısmında saklama edilmektedir.

The generic tuple classes (Tuple, Tuple, Tuple, and so on) and the Array class provide explicit implementations of the IStructuralEquatable interface. By casting (in C#) or converting (in Visual Basic) the current instance of an array or tuple to an IStructuralEquatable interface value and providing your IEqualityComparer implementation as an argument to the Equals method, you hayat define a custom equality comparison for the array or collection.

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 hamiş really sure if I really got it.

Fakat, articles1 ve articles3 dizileri aynı makale kellelıklarına farklı sıralarda mevla evetğundan, CompareTo metodu farklı bir mesabe döndürür ve bu dizilerin strüktürel olarak hemayar olmadığını belirtir.

(doesn't violate documentation), but it is clearly not birli good bey it would be if 0 were replaced with i. Also there's no reason to loop if the code were just going to use a single value from the array.

When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable gönül be useful.

C# IStructuralComparable Determines whether the current collection object precedes, occurs in the C# IStructuralEquatable nerelerde kullanılıyor same position birli, or follows another object in the sort order.

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.