Hakkında herşey C# IStructuralEquatable Temel Özellikleri

Hakkında herşey C# IStructuralEquatable Temel Özellikleri

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comparer IEqualityComparer An object that determines whether the current instance and other are equal.

= to provide value equality checks (vs the default reference equality check). The MSDN documentation suggests you only do it for immutable types. There are also issues involving interfaces and operator overloading.

It differs from reference equality, which indicates that two object references are equal because they reference the same physical object.

Equals and object.ReferenceEquals. Equals is meant to be overridden for whatever sort of comparison makes the most sense for a given type, whereas ReferenceEquals güç't be overridden and always compares by reference.

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The IEquatable implementation will require one less cast for these classes and kakım a result will be slightly faster than the standard object.Equals method that would be used C# IStructuralEquatable nerelerde kullanılıyor otherwise. Kakım an example see the different implementation of the two methods:

Ancak, articles1 ve articles3 dizileri aynı makale kellelıklarına farklı sıralarda malik başüstüneğundan, CompareTo metodu farklı bir boy bos döndürür ve bu dizilerin strüktürel olarak müsavi olmadığını belirtir.

Başka bir ifadeyle, kendi konstrüktif denklik teşhismınızı oluşturabilir ve bu teşhismın arabirimi akseptans IStructuralEquatable eden bir koleksiyon türüyle kullanılacağını belirtebilirsiniz. Arabirimin dü üyesi vardır: Equals, tamlanan IEqualityComparer bir uygulamayı kullanarak eşitliği sınav değer ve GetHashCodeeşit olan nesneler bâtınin aynı katışık kodları döndürür.

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This member is an explicit interface member implementation. It hayat be used only when the Array instance is cast to an IStructuralEquatable interface.

Defines methods to support the comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.

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.

While writing my own immutable ByteArray class that uses a byte array internally, I implemented the IStructuralEquatable interface.