En Kuralları Of C# IStructuralEquatable Kullanımı
En Kuralları Of C# IStructuralEquatable Kullanımı
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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.
Bu tür bir önlaştırma, makale kellelıklarının sıralamasının önemli evetğu durumlarda, yapısal benzerliklerin veya farklılıkların belirlenmesine yardımcı mümkün.
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 derece just compare references or individual values.
Bey an example, it might make sense for two different instances of an Employee class to be considered equal if they both represent the same entity in your system.
comparer IEqualityComparer An object that determines whether the current instance and other are equal.
If those objects do derece contain equality/hashcode methods that satisfy that contract, C# IStructuralEquatable Temel Özellikleri you will have to wrap them and provide correct implementations for those methods yourself in the wrapper.
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Farklı bir ifadeyle, kendi strüktürel denklik teşhismınızı oluşturabilir ve bu teşhismın arabirimi kabul IStructuralEquatable eden bir derlem türüyle kullanılacağını belirtebilirsiniz. Arabirimin iki üyesi vardır: Equals, tamlanan IEqualityComparer bir uygulamayı kullanarak eşitliği sınav paha ve GetHashCodeeşit olan nesneler muhtevain aynı karma kodları döndürür.
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Net on a certain platform, I'm compelled to issue the standard warning hamiş to rely on the values of hashcodes or how they are computed, since it is not guaranteed to be the same across updates or platforms.
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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. Birli the output from the example shows, the first three method calls return true, whereas the fourth call returns false.
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