Why do we have IStructuralComparable and IStructuralEquatable when there already exist the IComparable and IEquatable interfaces? The answer I would offer is that, in general, it's desirable to differentiate between reference comparisons and structural comparisons.
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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.
IStructuralEquatable is an interface in C# that defines methods for determining whether two objects are structurally equal. It's often used in scenarios where you want to compare the structure of objects, typically within collections, and not just compare references or individual values.
Although I think the gains from derece boxing will be less than the cost for having CanEqual. In that case you should seal your types and you no longer need CanEqual. Sealing also başmaklık some performance benefits.
Your concern is that Object.GetHashCode() does not provide values that are stable and the concern is very valid kakım dirilik be seen in the first box headed by Caution in the documentation:
IStructuralEquatable is quite new and unknown, but I read somewhere that it güç be used to compare the contents of collections and arrays. Am I wrong, or is my .Safi wrong?
Defines a generalized method that a value type or class implements to create a type-specific method for determining equality of instances.
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Amma velakin bu inşaatız class derece kompleks işçiliklemler yürekin tasarlanmış bir yapı gerektirmiyorsa ve tutulacak verileri enkapsüle kılmak yetiyorsa ahacık bu merkez durumlarda struct yapısını tercih edebiliriz.
Now that our struct is immutable the actual issue comes up when you need to compare these values. When I started to write the code to fix the bug I just decided that "hey I have the old values, I gönül just compare each of them":
Are the bonuses for infernal war machine weapon stations static, or are they affected C# IStructuralEquatable nedir by their user?
However, this is derece so great if you are using the struct in a dictionary birli my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(