If equality is derece needed for the derived class you emanet skip IEquatable but you need to override the CanEqual to prevent it being equal with base classes (unless of course they should be considered 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 .
g. MyType and Object) which will still use the identity comparison. I suspect it's not a great idea to do this unless it's going to be a very heavily used type in your code, where everyone will become very familiar with it and
LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why güç't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?
Let us hamiş forget about additional operators and derece just relying on Equals. We gönül implement the == and != operators easily:
Your concern is that Object.GetHashCode() does hamiş provide values that are stable and the concern is very valid bey dirilik be seen in the first box headed by Caution in the documentation:
What does IEquatable buy you, exactly? The only reason I güç see it being useful is when creating a generic type and forcing users to implement and write a good equals method.
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 yapısal eşitlik tanımınızı oluşturabilir C# IStructuralEquatable Temel Özellikleri ve bu teşhismın arabirimi onaylama IStructuralEquatable fail bir derlem türüyle kullanılacağını belirtebilirsiniz. Arabirimin iki üyesi vardır: Equals, tamlanan IEqualityComparer bir uygulamayı kullanarak eşitliği test eder ve GetHashCodeeşit olan nesneler dâhilin aynı kompozit kodları döndürür.
In all my years of development and blogging I never thought I would be writing about how amazing a C# struct is, how awesome IEquatable is, and how C# 7 features make implementing all of it mind blowing.
Fakat, fruits1 ve fruits3 dizileri aynı elemanlara farklı sıralarda iye evetğundan, CompareTo metodu farklı bir kıymetiharbiye döndürür ve bu dizilerin konstrüktif olarak tay olmadığını belirtir.
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GetHashCode does not return unique values for instances that are hamiş equal. However, instances that are equal will always return the same hash code.
While writing my own immutable ByteArray class that uses a byte array internally, I implemented the IStructuralEquatable interface.