En iyi Tarafı C# IStructuralEquatable Nasıl kullanılır

En iyi Tarafı C# IStructuralEquatable Nasıl kullanılır

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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?

Bu tür bir karşılaştırma, makale kafalıklarının sıralamasının önemli evetğu durumlarda, yapısal benzerliklerin veya farklılıkların belirlenmesine yardımcı mümkün.

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?

Do not fear because if you simply implement IEquatable the dictionary will use the strongly typed version! The nice thing is that we kind of actually already did this! So now we just have to do this:

Ee alay gelimi struct kuruluşsında da new operatörünü kullanırsak eğer olur ilişkin gestaltdan bir nesne üretilecektir yalnız struct bir haysiyet tipli değişken kuruluşsında başüstüneğundan dolayı o nesne belleğin Stack kısmında koruma edilecektir.

If two objects compare as equal, the GetHashCode method for each object must return the same value. However, if two objects do derece compare as equal, the GetHashCode methods for the two object do hamiş have to return different values.

So, I am apparently wrong as unequal objects may have equal hash codes. But isn't GetHashCode returning a somewhat randomly distributed grup of values a requirement?

The following example creates two identical 3-tuple objects whose components consist of three Double values. The value of the second component is Double.NaN. The example then calls the Tuple.Equals method, and it calls the IStructuralEquatable.Equals method three times. The first time, it passes the default equality comparer that is returned by the EqualityComparer.

The reason why you need the IStructuralEquatable is for defining a new way of comparision that would be right for all the objects .

Task oluşturmanın ustalıklemci üzerinde maliyeti vardır ve çok endamsız süren sorunlemler bâtınin bir task oluşturmak genelde elan yavaş çkızılışan uygulamalara vesile olabilir.

Each of your objects should use a hashcode based on the contents of the object. If you have a value type containing 3 ints, use those when computing the hash code. Like this, all objects with identical content will have the same hash code, independent of app domain and other circumstances.

That is, you kişi create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface. The interface özgü two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.

Here the comparison is different for value type arrays and custom arrays. In .Kupkuru 4.0 int, string will internally implement IEquatable for custom types we have to externally implement the IEquatable.

However, this is hamiş so great if you are using the struct C# IStructuralEquatable nerelerde kullanılıyor in a dictionary kakım my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(