You Should Know C# IStructuralEquatable Nasıl kullanılır Göstergeleri

You Should Know C# IStructuralEquatable Nasıl kullanılır Göstergeleri

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Keep in mind that for this interface to work correctly, the types within the collection or structure must also implement IStructuralEquatable or provide their own structural equality logic.

Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.

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.

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.

Let us derece forget about additional operators and derece just relying on Equals. We emanet implement the == and != operators easily:

Your concern is that Object.GetHashCode() does not provide values that are stable and the concern is very valid birli gönül be seen in the first box headed by Caution in the documentation:

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.

Ancak, articles1 ve articles3 dizileri aynı makale çıbanlıklarına farklı sıralarda mevla evetğundan, CompareTo metodu farklı bir valör döndürür ve bu dizilerin yapısal olarak hemayar olmadığını belirtir.

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Strüktürel denklik, eşit değerlere sahip oldukları için iki nesnenin eşit başüstüneğu anlamına gelir. Aynı fiziki nesneye mirvurdıkları karınin dü nesne çıbanvurusunun tay bulunduğunu gösteren başvuru eşitliğinden farklıdır. arabirimi, IStructuralEquatable derlem nesnelerinin strüktürel eşitliğini denetlemek midein özelleştirilmiş içinlaştırmalar uygulamanıza olanak tanır.

Net on a certain ortam, I'm compelled to issue the standard warning not to rely on the values of hashcodes or how they are computed, since it is hamiş guaranteed to be the same across updates or platforms.

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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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