Bir İnceleme C# IStructuralEquatable Temel Özellikleri

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If equality is not needed for the derived class you birey 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).

In certain scenarios (such kakım using the value type birli a key in a dictionary) it güç murder performance in one foul swoop.

Reference types (read classes) don't benefit kakım much. The IEquatable implementation does let you avoid a cast from System.Object but that's a very trivial gain. I still like IEquatable to be implemented for my classes since it logically makes the intent explicit.

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. Kakım the output from the example shows, the first three method calls return true, whereas the fourth call returns false.

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The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects.

After some more testing I found that any two arrays with the same first element have the same hash. I still think this is strange behavior.

We hayat also make our own container play well with these C# IStructuralEquatable Temel Özellikleri other containers by implementing these interfaces.

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Bir önceki işlemlemin aynısını AsOrdered extensionı ile binaldığında iş gine paralel olarak yapılır, fakat sonuçlar sıralı olabilir.

Programlama dillerinde en mühim OOP(Object Oriented Programing) yapılarından olan class örgüsına gereğince henüz macerasız düzeyde alışverişlemler gerçekleştirmemizi sağlayan ve mukannen bir ekipman engellemelerı nispetle çitndıran struct yapkaloriı C# diline özel ele alacağız.

The example on MSDN gives part of the answer here; it seems to be useful for heterogeneous equality, rather than homogeneous equality - i.e. for testing whether two objects (/values) of potentially different types

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Being able to specify IStructuralEquatable/IStructuralComparable in such cases is actually useful. It would also be inconvenient to pass a TupleComparer or ArrayComparer everywhere you want to apply this type of comparison. The two approaches are hamiş mutually exclusive.