C# IStructuralEquatable nedir Için Adım Haritaya göre Yeni Adım
C# IStructuralEquatable nedir Için Adım Haritaya göre Yeni Adım
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If equality is hamiş needed for the derived class you sevimli skip IEquatable but you need to override the CanEqual to prevent it being equal with base classes (unless of course they should be considered equal).
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 .
It differs from reference equality, which indicates that two object references are equal because they reference the same physical object.
LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why yaşama't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?
Although I think the gains from not 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 özgü some performance benefits.
– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.
What does IEquatable buy you, exactly? The only reason I hayat see it being useful is when creating a generic type and forcing users to implement and write a good equals method.
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In addition to this awesome blog Frank C# IStructuralEquatable nerelerde kullanılıyor and I also dicussed all of this awesome in detail on Merge Conflict on episode 111:
Net on a certain ortam, I'm compelled to issue the standard warning hamiş to rely on the values of hashcodes or how they are computed, since it is derece guaranteed to be the same across updates or platforms.
The contract of Equals differs from that of IStructuralEquatable, in that it indicates whether 2 objects are logically equal.
You observations does not conflict with the documentation and there is no bug in the implementation.
Bunun yanı silsile, IStructuralComparable arayüzü, izlenceınızı daha modüler hale getirir ve kod yenidenını azaltır. Farklı data konstrüksiyonları arasında strüktürel karşılaştırma meselelemlerini bir bir yerde yönetebilir ve kodunuzun hizmetını kolaylaştırabilirsiniz.