En son beş C# IStructuralEquatable Kullanımı Kentsel haber
En son beş C# IStructuralEquatable Kullanımı Kentsel haber
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That is, you sevimli create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface.
Bu tür bir muhaliflaştırma, makale saksılıklarının sıralamasının önemli başüstüneğu durumlarda, yapısal benzerliklerin yahut farklılıkların belirlenmesine yardımcı olur.
This is really amazing code and works great for .Safi Standard libraries. If you are in a .Safi Core 2.1 application there is an even cooler way of doing this:
IStructuralEquatable is an interface in C# that defines methods for determining whether two objects are structurally equal. It's often used in scenarios where you want to compare the structure of objects, typically within collections, and hamiş just compare references or individual values.
In this equating the values in arrays may be same or different but their object references are equal.
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The IEquatable implementation will require one less cast for these classes and bey a result will be slightly faster than the standard object.Equals method that would be used otherwise. Birli an example see the different implementation of the two methods:
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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When working with collections or structures where the order of elements matters, and you want to compare their structures, IStructuralEquatable hayat be useful.
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Bu örgüya kadar oluşturduğumuz bütün nesnelerin Heap kısmında bulunduğunu söylemiştik. Halbuki Stack kısmında struct strüktürsında nesneleri tutabilmekteyiz.
Just look at the default ValueType.Equals(object) code that gets called otherwise. It's an absolute performance C# IStructuralEquatable Nasıl kullanılır killer that introduces boxing, type evaluation and finally falls back on reflection if any of the fields are reference types.
Being able to specify IStructuralEquatable/IStructuralComparable in such cases is actually useful. It would also be inconvenient to pass a TupleComparer or ArrayComparer everywhere you want to apply this type of comparison. The two approaches are not mutually exclusive.