5 Basit Teknikleri için C# IStructuralEquatable nerelerde kullanılıyor
5 Basit Teknikleri için C# IStructuralEquatable nerelerde kullanılıyor
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comparer IEqualityComparer An object that determines whether the current instance and other are equal.
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If you want to implement IEquatable in a class hierarchy you sevimli use the following pattern. It prevents derived (including sibling) classes from being equal.
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Bildiğiniz üzere new operatrisü classlarda kullanıldığı ahit müntesip classtan bir nesne istek edilmekte ve üretilen nesne belleğin Heap kısmında saklama edilmektedir.
– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.
The IStructuralEquatable interface enables you to implement customized comparisons to check for the structural equality of collection objects. This is also made clear by the fact that this interface resides in the System.Collections namespace.
When an implementer overrides the virtual Equals method in a struct, the purpose is to provide a more efficient means of performing the value equality check and optionally to base the comparison on some subset of the struct's field or properties.
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Task oluşturmanın teamüllemci üzerinde maliyeti vardır ve çok kesik süren aksiyonlemler ciğerin bir task yapılandırmak genel anlamda daha yavaş çkızılışan uygulamalara sebep evet.
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.
IStructuralEquatable is used with arrays to C# IStructuralEquatable Kullanımı determine whether the arrays are structurally equal. The StructuralEqualityComparer.Equals method is used for this purpose.
Just look at the default ValueType.Equals(object) code that gets called otherwise. It's an absolute performance killer that introduces boxing, type evaluation and finally falls back on reflection if any of the fields are reference types.
Specifically, I do derece know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.