2 Dakika Kural için C# IStructuralEquatable Nasıl kullanılır

2 Dakika Kural için C# IStructuralEquatable Nasıl kullanılır

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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 as equal, the GetHashCode methods for the two object do hamiş have to return different values.

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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.

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 kakım 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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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.

Fakat, articles1 ve articles3 dizileri aynı makale serlıklarına farklı sıralarda malik olduğundan, CompareTo metodu farklı bir valör döndürür ve bu dizilerin yapısal olarak müsavi olmadığını belirtir.

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

If you read this entire post and are thinking wow that is a lot of code and steps to remember then do not fear because Dustin told me and showed me that Visual Studio will generate all of this for you!!!!! Check this out:

Amma velakin bu prodüksiyonız class denli kompleks alışverişlemler dâhilin tasarlanmış bir yapı gerektirmiyorsa ve tutulacak verileri enkapsüle buyurmak yetiyorsa işte bu yol durumlarda struct yapkaloriı tercih edebiliriz.

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GetHashCode does hamiş return unique values for instances that are hamiş equal. However, instances that are equal will always return the same hash code.

3 feature called Tuple Equality! That is right, you can create a ValueTuple and simply compare them birli they are super optimized, don't create any objects, and reduce this to a single line of code!