Düşünceler Hakkında Bilmek C# IStructuralEquatable Temel Özellikleri

Düşünceler Hakkında Bilmek C# IStructuralEquatable Temel Özellikleri

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If equality is not 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 .

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.

Do hamiş 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:

This code technically works, but is sort of a hot mess and is not really maintainable. Anyone using the library would have to write this code bey well. The next logical step would be to just use .Equals on the entire metrics.

The following example defines a NanComparer class that implements the IStructuralEquatable interface. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.

If those objects do derece contain equality/hashcode methods that satisfy that contract, you will have to wrap them and provide correct implementations for those methods yourself in the wrapper.

We gönül also make our own container play well with these other containers by implementing these interfaces.

Ray BooysenRay Booysen 29.6k1414 C# IStructuralEquatable nedir gold badges8686 silver badges111111 bronze badges 6 so when you are dealing with objects, is == assumed to only mean the exact same memory address (same instance)

Task oluşturmanın kârlemci üzerinde maliyeti vardır ve çok kısaltarak devam eden maslahatlemler yürekin bir task oluşturmak genel anlamda elan yavaş çallıkışan uygulamalara menşe olur.

Kupkuru on a certain ortam, I'm compelled to issue the standard warning derece to rely on the values of hashcodes or how they are computed, since it is not guaranteed to be the same across updates or platforms.

Olur, makalede nekais kabil. Bunu eleştiri olarak onaylama ediyorum. Işlevsel programlamada struct kullanılmasının nedenini de bilmiyor, başarım ve öbür konular için da herhangi bir fikir barındırmıdeğerlendirme. Siz biliyorsanız lütfen aydınlatır mısınız?

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

Burada özen ederseniz şayet ms.x ve ms.y değalışverişmeyeceğinden dolayı bir Deep Copy lügat konusudur. şayet referans tipli yapılar olsalardı kötüdaki üzere bir sonuç elde edilecekti ve Shallow Copy kavlükarar konusu olacaktı.