Definitive Guide C# IStructuralEquatable Temel Özellikleri için

Definitive Guide C# IStructuralEquatable Temel Özellikleri için

Blog Article

If two objects compare bey equal, the GetHashCode method for each object must return the same value. However, if two objects do hamiş compare birli equal, the GetHashCode methods for the two object do not have to return different values.

= 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.

Are the bonuses for infernal war machine weapon stations static, or are they affected by their user?

Equals and object.ReferenceEquals. Equals is meant to be overridden for whatever sort of comparison makes the most sense for a given type, whereas ReferenceEquals birey't be overridden and always compares by reference.

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.

So, I am apparently wrong birli unequal objects may have equal hash codes. But isn't GetHashCode returning a somewhat randomly distributed kaş of values a requirement?

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 dirilik't figure out what sıkıntı they solve that was tricky before .Safi 4.

The reason why you need the IStructuralEquatable is for defining a new way of comparision that would be right for all the objects .

Strüktürel eşitlik, bedel değerlere sahip oldukları muhtevain dü nesnenin müsavi başüstüneğu mealına hasılat. Aynı fiziki nesneye başlangıçvurdıkları için dü nesne esasvurusunun hemayar olduğunu gösteren müracaat eşitliğinden farklıdır. arabirimi, IStructuralEquatable derme nesnelerinin konstrüktif eşitliğini denetlemek muhtevain özelleştirilmiş hakkındalaştırmalar uygulamanıza olanak tanılamar.

Your browser isn’t supported anymore. Update it to get the best YouTube C# IStructuralEquatable Kullanımı experience and our latest features. Learn more

Defines methods to support the comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.

GetHashCode does hamiş return unique values for instances that are not equal. However, instances that are equal will always return the same hash code.

The Equals method supports custom structural comparison of array and tuple objects. This method in turn calls the comparer object's IEqualityComparer.Equals method to compare individual array elements or tuple components, starting with the first element or component.