C# IStructuralEquatable nedir Için Adım Haritaya göre Yeni Adım

C# IStructuralEquatable nedir Için Adım Haritaya göre Yeni Adım

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If two objects compare bey equal, the GetHashCode method for each object must return the same value. However, if two objects do hamiş compare kakım equal, the GetHashCode methods for the two object do hamiş have to return different values.

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 .

Reference types (read classes) don't benefit as 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.

Daniel A.A. PelsmaekerDaniel A.A. Pelsmaeker 49.2k2121 gold badges112112 silver badges160160 bronze badges 5 In addition to answers which point to duplicate hashcodes as is documented behavior, some reasoning and reflection would also lead you to the same conclusion.

I'm amazed that the most important reason is hamiş mentioned here. IEquatable was introduced mainly for structs for two reasons:

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Aynı mesleklemi her bir iterasyon midein bir task oluşturup yapabiliyorken neden Koşut bir döngü oluşturmalıyız?

I've noticed these two interfaces, and several associated classes, have been added in .NET 4. They seem a bit superfluous to me; I've read several blogs about them, but I still güç't figure out what sıkıntı they solve that was tricky before .NET 4.

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

Ancak, fruits1 ve fruits3 dizileri aynı elemanlara farklı sıralarda ehil evetğundan, CompareTo metodu farklı bir ayar döndürür ve bu dizilerin strüktürel olarak tay olmadığını belirtir.

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

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Specifically, I do hamiş know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.