En C# IStructuralEquatable Nasıl kullanılır Sırları
En C# IStructuralEquatable Nasıl kullanılır Sırları
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That is, you can 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 derece 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, ekseriyetle Array ve Tuple üzere data gestaltları aracılığıyla uygulanır. Bu bilgi örgüları, elemanlarının sıralamasını ve yapkaloriı dikkate alarak muhaliflaştırma yapar.
You generic method katışıksız 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 yaşama use .NET tuples or anonymous types to create hash codes by combining values but I am hamiş sure this answers your question.
Your concern is that Object.GetHashCode() does hamiş provide values that are stable and the concern is very valid kakım güç be seen in the first box headed by Caution in the documentation:
If those objects do C# IStructuralEquatable nerelerde kullanılıyor derece contain equality/hashcode methods that satisfy that contract, you will have to wrap them and provide correct implementations for those methods yourself in the wrapper.
Consider that there are only ~4.2 billion different hashcodes. Emanet you create more than this many different objects of the type on which GetHashCode is called? In this case it is easy to see the answer is "yes". So GetHashCode is a sort of compressing projection onto a smaller set - there are bound to be duplicates.
Fantasy TV series with a male protagonist who uses a bow and arrows and katışıksız a hawk/falcon/eagle type bird companion
Bu örnekte, articles1 ve articles2 dizileri aynı makale serlıklarına aynı tam sahip olduğundan, CompareTo metodu 0 döndürerek bu dizilerin strüktürel olarak bedel olduğunu belirtir.
Each of your objects should use a hashcode based on the contents of the object. If you have a value type containing 3 ints, use those when computing the hash code. Like this, all objects with identical content will have the same hash code, independent of app domain and other circumstances.
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Fantasy TV series with a male protagonist who uses a bow and arrows and has a hawk/falcon/eagle type bird companion
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