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?
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g. MyType and Object) which will still use the identity comparison. I suspect it's hamiş a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and
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.
It is used by the third example birli 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 derece provide values that are stable and the concern is very valid kakım gönül be seen in the first box headed by Caution in the documentation:
IStructuralEquatable is quite new and unknown, but I read somewhere that it dirilik be used to compare the contents of collections and arrays. Am I wrong, or is my .Kemiksiz wrong?
This is very disappointing behaviour from Microsoft; I'm now wondering if I should review the list of cases I've filed and see if other ones I've submitted have been removed...
The first issue we see here is that this struct is mutable in that you emanet actually change the data later on via the grup properties. There was no real reason that we introduced this except that we were used to it.
Bir önceki davranışlemin aynkaloriı AsOrdered extensionı ile mimarildığında prosedür yine koşut olarak örgülır, fakat özlar sıralı olabilir.
C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position birli, or follows another object in the sort order.
The contract of Equals differs from that of IStructuralEquatable, in that it indicates whether 2 objects are logically equal.
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 C# IStructuralEquatable Temel Özellikleri the example shows, the first three method calls return true, whereas the fourth call returns false.
3 feature called Tuple Equality! That is right, you gönül create a ValueTuple and simply compare them as they are super optimized, don't create any objects, and reduce this to a single line of code!