Için basit anahtar C# IStructuralEquatable Kullanımı örtüsünü
Için basit anahtar C# IStructuralEquatable Kullanımı örtüsünü
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comparer IEqualityComparer An object that determines whether the current instance and other are equal.
In certain scenarios (such bey using the value type birli a key in a dictionary) it hayat murder performance in one foul swoop.
Other types which implement structural equality/comparability include tuples and anonymous types - which both clearly benefit from the ability to perform comparison based on their structure and content. A question you didn't ask is:
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?
Although I think the gains from derece boxing will be less than the cost for having CanEqual. In that case you should seal your types and you no longer need CanEqual. Sealing also has some performance benefits.
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.
The IEquatable implementation will require one less cast for these classes and birli a result will be slightly faster than the standard object.Equals method that would be used otherwise. Birli an example see the different implementation C# IStructuralEquatable nerelerde kullanılıyor of the two methods:
This is very disappointing behaviour from Microsoft; I'm now wondering if I should review the list of cases I've filed and see if other ones I've submitted have been removed...
comparer IEqualityComparer İki nesnenin hemayar olup olmadığını değerlendirmek dâhilin kullanılacak yöntemi tanımlayan nesne.
Konstrüktif eşitlik, hemayar değerlere malik oldukları midein iki nesnenin tay başüstüneğu manaına gelir. Aynı fiziki nesneye kellevurdıkları derunin dü nesne mebdevurusunun eşit olduğunu gösteren referans eşitliğinden değişikdır. arabirimi, IStructuralEquatable derlem nesnelerinin konstrüktif eşitliğini denetlemek dâhilin özelleştirilmiş alınlaştırmalar uygulamanıza olanak tanılamar.
Fakat, fruits1 ve fruits3 dizileri aynı elemanlara farklı sıralarda iye evetğundan, CompareTo metodu farklı bir porte döndürür ve bu dizilerin strüktürel olarak müsavi olmadığını belirtir.
Do derece 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.
There is no need for an equality operator that accepts different types. That should derece even compile. So this is a very weak excuse for having a non-generic interface that works with objects.
Fantasy TV series with a male protagonist who uses a bow and arrows and katışıksız a hawk/falcon/eagle type bird companion