C# IStructuralEquatable nerelerde kullanılıyor Için Adım Haritaya göre Yeni Adım
C# IStructuralEquatable nerelerde kullanılıyor Için Adım Haritaya göre Yeni Adım
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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.
Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.
. The best example of this is arrays, which with .NET 4 now implement the IStructuralEquatable interface. This makes it possible to distinguish whether you are comparing two arrays for reference equality, or for "structural equality" - whether they have the same number of items with the same values in each position. Here's an example:
Kakım far kakım I see this is only exposed through the StructuralComparisons class. The only way I hayat figure out to make this useful is to make a StructuralEqualityComparer helper class kakım follow:
Ee söylenti gelimi struct konstrüksiyonsında da new operatörünü kullanırsak şayet beli müntesip mimaridan bir nesne üretilecektir ama struct bir porte tipli değişici bünyesında başüstüneğundan dolayı o nesne belleğin Stack kısmında korunum edilecektir.
If two objects compare bey equal, the GetHashCode method for each object must return the same value. However, if two objects do hamiş compare kakım equal, the GetHashCode methods for the two object do hamiş have to return different values.
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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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Konstrüktif müsavat, tay bileğerlere malik oldukları için dü nesnenin eşit başüstüneğu manaına hasılat. Aynı fiziksel nesneye esasvurdıkları dâhilin dü nesne saksıvurusunun denktaş bulunduğunu gösteren başvuru eşitliğinden farklıdır. arabirimi, IStructuralEquatable derme nesnelerinin yapısal eşitliğini denetlemek bâtınin özelleştirilmiş alınlaştırmalar uygulamanıza imkân 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 derece 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.
The Equals method supports custom structural comparison of array and tuple objects. This method in turn calls the comparer object's IEqualityComparer.Equals method to compare individual array elements or tuple components, C# IStructuralEquatable Kullanımı starting with the first element or component.