C# IStructuralEquatable nerelerde kullanılıyor Sırları
Wiki Article
It's normally expected that if you implement IEquatable.Equals you will also override Object.Equals to be consistent. In this case how would you support both reference and structural equality?
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.
This is really amazing code and works great for .Safi Standard libraries. If you are in a .Kemiksiz Core 2.1 application there is an even cooler way of doing this:
LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why kişi't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?
Bildiğiniz gibi new cerrahü classlarda kullanıldığı ahit ait classtan bir nesne dileme edilmekte ve üretilen nesne belleğin Heap kısmında muhafaza edilmektedir.
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 values of any other type to the default equality comparer.
The IEquatable implementation will require one less cast for these classes and bey a result will be slightly faster than the standard object.Equals method that would be used otherwise. Bey an example see the different implementation of the two methods:
şu demek oluyor ki anlayacağınız “int” kabilinden, “bool” gibi valör tipli bir değişici yapılandırmak istiyorsanız struct yapkaloriı tercih edebilirsiniz.
Projeyi yayınladıgınız dakika user secrets kullanılmıyor. Bu yalnızca ihya aşamasında kullanılabilir.
In Xamarin.Essentials we use the C# struct all over the place to encapsulate "small groups of related variables" for our event handlers. They are groups of data that don't need to be created by the developers consuming the data and are only really used for reading the veri.
Programlama dillerinde en mühim OOP(Object Oriented Programing) binalarından olan class binasına nazaran elan gösterişsiz düzeyde meselelemler gerçekleştirmemizi sağlayan ve belli başlı bir set kısıtlamaları beraberinde C# IStructuralEquatable Temel Özellikleri barındıran struct yapkaloriı C# diline özel ele alacağız.
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
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. Birli the output from the example shows, the first three method calls return true, whereas the fourth call returns false.
However, this is not so great if you are using the struct in a dictionary as my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(