Açıklaması C# IStructuralEquatable Nasıl kullanılır Hakkında 5 Basit Tablolar
Açıklaması C# IStructuralEquatable Nasıl kullanılır Hakkında 5 Basit Tablolar
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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 bey equal, the GetHashCode methods for the two object do derece 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 .
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.
Does anyone know what happens if you do not implement iequtalable when using generic collections? 2
Let us hamiş forget about additional operators and derece just relying on Equals. We yaşama implement the == and != operators easily:
comparer IEqualityComparer An object that determines whether the current instance and other are equal.
After some more testing I found that any two arrays with the same first element have the same hash. I still think this is strange behavior.
Defines a generalized method that a value type or class implements to create a type-specific method for determining equality of instances.
Değişik bir ifadeyle, kendi strüktürel eşitlik teşhismınızı oluşturabilir ve bu teşhismın arabirimi ikrar IStructuralEquatable eden bir koleksiyon türüyle kullanılacağını belirtebilirsiniz. Arabirimin iki üyesi vardır: Equals, belirtilen IEqualityComparer bir uygulamayı kullanarak eşitliği test fiyat ve GetHashCodeeşit olan nesneler için aynı katışık kodları döndürür.
When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable emanet be useful.
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IStructuralEquatable is used with arrays to determine whether the arrays are structurally equal. The StructuralEqualityComparer.Equals method is used for this purpose.
The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.
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 C# IStructuralEquatable nedir tuple components, starting with the first element or component.