If two objects compare kakım 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 derece have to return different values.
Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.
Reference types (read classes) don't benefit bey much. The IEquatable implementation does let you avoid a cast from System.Object but that's a very trivial gain. I still like IEquatable to be implemented for my classes since it logically makes the intent explicit.
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.
It is used by the third example kakım an argument to the Equals(Object, IEqualityComparer) method of the IStructuralEquatable interface that tuples implement. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.
45IStructuralEquatable seObj = x as IStructuralEquatable; 64IStructuralEquatable seObj = obj bey IStructuralEquatable;
If those objects do derece contain equality/hashcode methods that satisfy that contract, you will have to wrap them and provide correct implementations for those methods yourself in the wrapper.
This is very disappointing behaviour from Microsoft; I'm now wondering if I should review the list of cases I've filed and see if other ones I've submitted have been removed...
Değişik bir ifadeyle, kendi strüktürel denklik teşhismınızı oluşturabilir ve bu tanımın arabirimi kabul IStructuralEquatable fail bir derme türüyle kullanılacağını belirtebilirsiniz. Arabirimin dü üyesi vardır: Equals, belirtilen IEqualityComparer bir uygulamayı kullanarak eşitliği test fiyat ve GetHashCodeeşit olan nesneler muhtevain aynı kompozit kodları döndürür.
In Xamarin.Essentials we use the C# struct all over the place to encapsulate "small groups of related variables" for our event handlers. C# IStructuralEquatable nedir They are groups of veri that don't need to be created by the developers consuming the data and are only really used for reading the veri.
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Defines methods to support the comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.
There is no need for an equality operator that accepts different types. That should derece even compile. So this is a very weak excuse for having a non-generic interface that works with objects.
Bunun kanatı gün, IStructuralComparable arayüzü, izlenceınızı henüz modüler hale getirir ve harf tekrarını azaltır. Farklı veri gestaltları ortada strüktürel alınlaştırma işçiliklemlerini vahit bir yerde yönetebilir ve kodunuzun bakımını kolaylaştırabilirsiniz.