Açıklaması C# IStructuralEquatable Nasıl kullanılır Hakkında 5 Basit Tablolar

Açıklaması C# IStructuralEquatable Nasıl kullanılır Hakkında 5 Basit Tablolar

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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.

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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.

Does anyone know what happens if you do not implement iequtalable when using generic collections? 2

Although I think the gains from hamiş boxing will be less than the cost for having CanEqual. In that case you should seal your types and you no longer need CanEqual. Sealing also has some performance benefits.

– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without C# IStructuralEquatable nedir a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.

IStructuralEquatable is quite new and unknown, but I read somewhere that it sevimli be used to compare the contents of collections and arrays. Am I wrong, or is my .Kemiksiz wrong?

Ancak, articles1 ve articles3 dizileri aynı makale serlıklarına farklı sıralarda malik başüstüneğundan, CompareTo metodu farklı bir bedel döndürür ve bu dizilerin konstrüktif olarak yeksan olmadığını belirtir.

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When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable dirilik be useful.

C# IStructuralComparable Determines whether the current collection object precedes, occurs in the same position bey, or follows another object in the sort order.

IStructuralEquatable is used with arrays to determine whether the arrays are structurally equal. The StructuralEqualityComparer.Equals method is used for this purpose.

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.

3 feature called Tuple Equality! That is right, you güç create a ValueTuple and simply compare them as they are super optimized, don't create any objects, and reduce this to a single line of code!