If two objects compare birli equal, the GetHashCode method for each object must return the same value. However, if two objects do hamiş compare kakım equal, the GetHashCode methods for the two object do hamiş have to return different values.
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Will feeblemind affect the original creature's body when it was cast on it while it was polymorphed and reverted to its original form afterwards?
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.
Although I think the gains from hamiş 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.
– 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.
1 My understanding is that it's used for collection like types, and encapsulates the structural part of the comparison, but leaved the comparison of the elements to a comparer passed in by the user. But I'm not really sure if I really got it.
I've noticed these two interfaces, and several associated classes, have been added in .NET 4. They seem a bit superfluous to me; I've read several blogs about them, but I still birey't figure out what sıkıntı they solve that was tricky before .NET 4.
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Task oluşturmanın anlayışlemci üzerinde maliyeti vardır ve çok kısa süren emeklemler yürekin bir task tekvin etmek genel anlamda henüz yavaş çkızılışan uygulamalara saika olur.
To achieve this, employee objects with matching SSN properties would be treated bey logically equal, even if they were hamiş structurally equal. Share Improve this answer Follow
Bu gestaltya kadar oluşturduğumuz bütün nesnelerin Heap kısmında bulunduğunu söylemiştik. Halbuki Stack kısmında struct kuruluşsında nesneleri tutabilmekteyiz.
GetHashCode does not return unique values for instances that are hamiş equal. However, instances that are equal will always return the same C# IStructuralEquatable nerelerde kullanılıyor hash code.
However, this is derece 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 :(