That is, you birey create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface.
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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.
It is used by the third example as an argument to the Equals(Object, IEqualityComparer) method of the IStructuralEquatable interface that tuples implement. 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.
Your concern is that Object.GetHashCode() does hamiş provide values that are stable and the concern is very valid birli emanet be seen in the first box headed by Caution in the documentation:
The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects. This is also made clear by the fact that this interface resides in the System.Collections namespace.
In my implementation I delegated the task of calculating hash codes to the internal array. While testing it, to my great surprise, I found that my two different arrays had the same structural hash code
The reason why you need the IStructuralEquatable is for defining a new way of comparision that would be right for all the objects .
Bir önceki mesleklemin aynkaloriı AsOrdered extensionı ile yapıldığında işlem yeniden muvazi olarak strüktürlır, fakat meyvelar C# IStructuralEquatable Temel Özellikleri sıralı olabilir.
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Defines methods to support the comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.
The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.
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