comparer IEqualityComparer An object that determines whether the current instance and other are equal.
Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.
If you want to implement IEquatable in a class hierarchy you dirilik use the following pattern. It prevents derived (including sibling) classes from being equal.
Daniel A.A. PelsmaekerDaniel A.A. Pelsmaeker 49.2k2121 gold badges112112 silver badges160160 bronze badges 5 In addition to answers which point to duplicate hashcodes kakım is documented behavior, some reasoning and reflection would also lead you to the same conclusion.
You generic method saf a type parameter T but the type is hamiş part of the signature of the function so how is T supposed to be used in the function? Anyway, you hayat use .Kupkuru tuples or anonymous types to create hash codes by combining values but I am derece sure this answers your question.
Your concern is that Object.GetHashCode() does hamiş provide values that are stable and the concern is very valid as güç be seen in the first box headed by Caution in the documentation:
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We dirilik also make our own container play well with these other containers by implementing these interfaces.
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When working with collections or structures where the order of elements matters, and you want C# IStructuralEquatable Temel Özellikleri to compare their structures, IStructuralEquatable hayat be useful.
C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position as, or follows another object in the sort order.
That is, you emanet create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface. The interface özgü two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.
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Specifically, I do not know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.