En iyi Tarafı C# IStructuralEquatable nerelerde kullanılıyor

En iyi Tarafı C# IStructuralEquatable nerelerde kullanılıyor

Blog Article

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.

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

. The best example of this is arrays, which with .Kupkuru 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:

Default property. The second time, it passes the default equality comparer that is returned by the StructuralComparisons.StructuralEqualityComparer property. The third time, it passes the custom NanComparer object. As the output from the example shows, the first three method calls return true, whereas the fourth call returns false.

You generic method katışıksız a type parameter T but the type is not part of the signature of the function so how is T supposed to be used in the function? Anyway, you birey use .Safi tuples or anonymous types to create hash codes by combining values but I am derece sure this answers your question.

The following example defines a NanComparer class that implements the IStructuralEquatable interface. It compares two Double or two Single values by using the equality operator. It passes C# IStructuralEquatable nerelerde kullanılıyor values of any other type to the default equality comparer.

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

Defines a generalized method that a value type or class implements to create a type-specific method for determining equality of instances.

Projeyi yayınladıgınız saat user secrets kullanılmıyor. Bu sadece geliştirme aşamasında kullanılabilir.

In addition to this awesome blog Frank and I also dicussed all of this awesome in detail on Merge Conflict on episode 111:

To achieve this, employee objects with matching SSN properties would be treated bey logically equal, even if they were not structurally equal. Share Improve this answer Follow

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

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

Bunun semtı silsile, IStructuralComparable arayüzü, izlenceınızı elan modüler hale getirir ve kod yineını azaltır. Farklı done konstrüksiyonları arasında strüktürel karşılaştırma maslahatlemlerini yekta bir yerde yönetebilir ve kodunuzun bakımını kolaylaştırabilirsiniz.