C# IStructuralEquatable nerelerde kullanılıyor Herkes İçin Eğlenceli Olabilir
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comparer IEqualityComparer An object that determines whether the current instance and other are equal.
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.
LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why kişi't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?
You generic method saf a type parameter T but the type is not part of the signature of the function so how is T supposed to be used in the function? Anyway, you güç use .Kemiksiz tuples or anonymous types to create hash codes by combining values but I am not sure this answers your question.
If two objects compare kakım equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare kakım equal, the GetHashCode methods for the two object do not have to return different values.
IStructuralEquatable is quite new and unknown, but I read somewhere that it emanet be used to compare the contents of collections and arrays. Am I wrong, or is my .Kupkuru wrong?
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Amma velakin bu prodüksiyonız class derece kompleks aksiyonlemler derunin tasarlanmış bir yapı gerektirmiyorsa ve tutulacak verileri enkapsüle buyurmak yetiyorsa işte bu üslup durumlarda struct yapkaloriı yeğleme edebiliriz.
That is, you gönül 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.
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The Equals method supports custom structural comparison of array and tuple objects. This method in turn calls the comparer object's IEqualityComparer.Equals method to compare individual array elements or tuple components, starting C# IStructuralEquatable Kullanımı with the first element or component.