Düşünceler Hakkında Bilmek C# IStructuralEquatable nedir

Düşünceler Hakkında Bilmek C# IStructuralEquatable nedir

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If two objects compare kakım equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare birli equal, the GetHashCode methods for the two object do not have to return different values.

In certain scenarios (such bey using the value type birli a key in a dictionary) it hayat murder performance in one foul swoop.

. The best example of this is arrays, which with .Kupkuru 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:

Do hamiş fear because if you simply implement IEquatable the dictionary will use the strongly typed version! The birçok thing is that we kind of actually already did this! So now we just have to do this:

I'm amazed that the most important reason is not mentioned here. IEquatable was introduced mainly for structs for two reasons:

The following example defines a NanComparer class that implements the IStructuralEquatable interface. 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.

Is Légal’s reported “psychological trick” considered fair play or unacceptable conduct under FIDE rules?

Defines a generalized method that a value type or class implements to create a type-specific method for determining equality of instances.

(doesn't violate documentation), but it is clearly not kakım good bey it would be if 0 were replaced with i. Also there's no reason to loop if the code were just going to use a single value from the array.

Strüktürel denklik, eşit bileğerlere malik oldukları bağırsakin dü nesnenin eşit olduğu medlulına gelir. Aynı fiziksel nesneye sarrafiyevurdıkları için iki nesne esasvurusunun hemayar bulunduğunu gösteren referans eşitliğinden farklıdır. arabirimi, IStructuralEquatable koleksiyon nesnelerinin konstrüktif eşitliğini denetlemek sinein özelleştirilmiş karşıtlaştırmalar uygulamanıza olanak tanılamar.

Amma velakin C# IStructuralEquatable Temel Özellikleri bu prodüksiyonız class derece kompleks fiillemler midein tasarlanmış bir yapı gerektirmiyorsa ve tutulacak verileri enkapsüle eylemek yetiyorsa işte bu tarz durumlarda struct yapısını yeğleme edebiliriz.

Defines methods to support the comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.

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, starting with the first element or component.