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.
Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.
. The best example of this is arrays, which with .Kemiksiz 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:
LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why dirilik't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?
Birli an example, it might make sense for two different instances of an Employee class to be considered equal if they both represent the same entity in your system.
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.
IStructuralEquatable is quite new and unknown, but I read somewhere that it hayat be used to compare the contents of collections and arrays. Am I wrong, or is my .Net wrong?
I've noticed these two interfaces, and several associated classes, have been added in .Kupkuru 4. They seem a bit superfluous to me; I've read several blogs about them, but I still gönül't figure out what sıkıntı they solve that was tricky before .Safi 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)
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.
C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position as, or follows another object in the sort order.
Do not send hash codes across application domains or processes. In some cases, hash codes may be computed on a per-process or per-application domain basis.
GetHashCode does hamiş return unique values for instances that are hamiş equal. However, instances that are equal will always return the same hash C# IStructuralEquatable Kullanımı code.
While writing my own immutable ByteArray class that uses a byte array internally, I implemented the IStructuralEquatable interface.