Temel İlkeleri C# IStructuralEquatable nerelerde kullanılıyor

Temel İlkeleri C# IStructuralEquatable nerelerde kullanılıyor

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That is, you dirilik create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface.

1 How do such comparators relate to things like Dictionary and other collections? I know that Dictionary seems to handle structures sensibly albeit slowly in .

g. MyType and Object) which will still use the identity comparison. I suspect it's hamiş a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and

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 can't be overridden and always compares by reference.

Kakım 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.

I never put much thought into using a struct over a class or even additional optimizations because to me the struct was optimized already. When I was working on fixing a bug in our DeviceDisplay to hamiş trigger new events unless a value changed a whole new world opened up to me.

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. Birli an example see the different implementation of the two methods:

When an implementer overrides the virtual Equals method in a struct, the purpose is to provide a more efficient means of performing the value equality check and optionally to base the comparison on some subset of the struct's field or properties.

Reading through the excellent blog post by Sergey on struct equality performance he mentions that the default implementations are pretty slow and using boxing for each member. Additionally, he mentions C# IStructuralEquatable Nasıl kullanılır that a memory comparison may hamiş give you the correct results in this super simple example:

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

Ancak, fruits1 ve fruits3 dizileri aynı elemanlara farklı sıralarda iye olduğundan, CompareTo metodu farklı bir mesabe döndürür ve bu dizilerin strüktürel olarak müsavi olmadığını belirtir.

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

The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.

Bu alanda veya özge bir alanda, benim ve öbür yardımcı insanların paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm altına girmeniz manaına gelmemektedir.