C# IStructuralEquatable nedir Ile ilgili detaylı notlar

C# IStructuralEquatable nedir Ile ilgili detaylı notlar

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It's normally expected that if you implement IEquatable.Equals you will also override Object.Equals to be consistent. In this case how would you support both reference and structural equality?

Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.

Other types which implement structural equality/comparability include tuples and anonymous types - which both clearly benefit from the ability to perform comparison based on their structure and content. A question you didn't ask is:

Do not fear because if you simply implement IEquatable the dictionary will use the strongly typed version! The nice thing is that we kind of actually already did this! So now we just have to do this:

You generic method has a type parameter T but the type is not part of the signature of the function so how is T supposed to be used in the function? Anyway, you can use .Kemiksiz tuples or anonymous types to create hash codes by combining values but I am hamiş sure this answers your question.

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

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 C# IStructuralEquatable Nasıl kullanılır be used otherwise. As 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.

The first issue we see here is that this struct is mutable in that you güç actually change the veri later on via the grup properties. There was no real reason that we introduced this except that we were used to it.

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.

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

Is there any legal justification for content on the web without an explicit licence being freeware? more hot questions

Specifically, I do derece know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.