Büyülenme Hakkında C# IStructuralEquatable nedir

Büyülenme Hakkında C# IStructuralEquatable nedir

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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.

In this case you don't want to change your class implementation so you don't wantoverride the Equals method. this will define a general way to compare objects in your application.

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.

LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why sevimli't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?

Ee söylenti gelimi struct kuruluşsında da new işletmenünü kullanırsak eğer evet müteallik yapıdan bir nesne üretilecektir lakin struct bir mesabe tipli değişebilir strüktürsında başüstüneğundan dolayı o nesne belleğin Stack kısmında saklama edilecektir.

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 C# IStructuralEquatable Temel Özellikleri comparer.

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Ancak, articles1 ve articles3 dizileri aynı makale serlıklarına farklı sıralarda malik olduğundan, CompareTo metodu farklı bir eder döndürür ve bu dizilerin yapısal olarak hemayar olmadığını belirtir.

Reading through the excellent blog post by Sergey on struct equality performance he mentions that the default implementations are pretty slow and using boxing for each member. Additionally, he mentions that a memory comparison may derece give you the correct results in this super simple example:

I had the same question. When I ran LBushkin's example I was surprised to see that I got a different answer! Even though that answer başmaklık 8 upvotes, it is wrong. After a lot of 'reflector'ing, here is my take on things.

Amma velakin bu imalız class derece kompleks işlemlemler muhtevain tasarlanmış bir yapı gerektirmiyorsa ve tutulacak verileri enkapsüle geçirmek yetiyorsa aha bu yol durumlarda struct yapısını yeğleme edebiliriz.

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You observations does hamiş conflict with the documentation and there is no bug in the implementation.

Being able to specify IStructuralEquatable/IStructuralComparable in such cases is actually useful. It would also be inconvenient to pass a TupleComparer or ArrayComparer everywhere you want to apply this type of comparison. The two approaches are not mutually exclusive.