2 Dakika Kural için C# IStructuralEquatable Nasıl kullanılır

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That is, you hayat create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface.

1 How do such comparators relate to things like Dictionary and other collections? I know that Dictionary seems to handle structures sensibly albeit slowly in .

g. MyType and Object) which will still use the identity comparison. I suspect it's not a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and

IStructuralComparable arayüzü, çoğu kez Array ve Tuple kadar veri kuruluşları aracılığıyla uygulanır. Bu bilgi strüktürları, elemanlarının sıralamasını ve yapısını dikkate alarak karşıtlaştırma yapar.

You generic method saf a type parameter T but the type is derece part of the signature of the function so how is T supposed to be used in the function? Anyway, you güç use .Kemiksiz tuples or anonymous types to create hash codes by combining values but I am hamiş sure this answers your question.

– 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 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.

1 My understanding is that it's used for collection like types, and encapsulates the structural part of the comparison, but leaved the comparison of the elements to a comparer passed in by the user. But I'm derece really sure if I really got it.

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...

(doesn't violate documentation), but it is clearly derece as good birli 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.

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

To C# IStructuralEquatable Kullanımı achieve this, employee objects with matching SSN properties would be treated birli logically equal, even if they were derece structurally equal. Share Improve this answer Follow

Olur, makalede eksiklikler mümkün. Bunu eleştiri olarak ikrar ediyorum. Fonksiyonel programlamada struct kullanılmasının nedenini bile bilmiyor, başarım ve özge konular karşı da herhangi bir kuruntu barındırmıtefsir. Siz biliyorsanız lütfen aydınlatır mısınız?

The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.

Bu alanda yahut ayrıksı bir alanda, benim ve öteki yardımcı insanoğluın paylaşımlarına lütfen acizliğiniz ve ezikliğinizle yaklaşmayınız. İzin istemek, benim hükmüm şeşna girmeniz medlulına gelmemektedir.