5 Basit Teknikleri için C# IStructuralEquatable Kullanımı

5 Basit Teknikleri için C# IStructuralEquatable Kullanımı

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

Bu tür bir muhaliflaştırma, makale kafalıklarının sıralamasının önemli başüstüneğu durumlarda, strüktürel benzerliklerin yahut farklılıkların belirlenmesine yardımcı olabilir.

That is right! When we override Equals we must also override and implement GetHashCode. I am no HashCode expert, but in the same article from Sergey is a snippet of using a ValueTuple to simplify this entire call to 1 line of code just like our fancy ValueTuple Equality above.

IStructuralComparable arayüzü, ekseri Array ve Tuple üzere veri mimariları aracılığıyla uygulanır. Bu muta gestaltları, elemanlarının sıralamasını ve yapkaloriı dikkate alarak hakkındalaştırma yapar.

You generic method özgü a type parameter T but the type is hamiş part of the signature of the function so how is T supposed to be used in the function? Anyway, you can use .Kupkuru tuples or anonymous types to create hash codes by combining values but I am not 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 C# IStructuralEquatable Kullanımı 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.

After some more testing I found that any two arrays with the same first element have the same hash. I still think this is strange behavior.

We birey also make our own container play well with these other containers by implementing these interfaces.

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

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

That is, you sevimli create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface. The interface özgü two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.

Here the comparison is different for value type arrays and custom arrays. In .Net 4.0 int, string will internally implement IEquatable for custom types we have to externally implement the IEquatable.

Burada dikkat ederseniz eğer ms.x ve ms.y bileğaksiyonmeyeceğinden dolayı bir Deep Copy kal konusudur. şayet referans tipli binalar olsalardı kötüdaki üzere bir sonuç elde edilecekti ve Shallow Copy söz konusu olacaktı.