Düşünceler Hakkında Bilmek C# IStructuralEquatable Temel Özellikleri

Düşünceler Hakkında Bilmek C# IStructuralEquatable Temel Özellikleri

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The "No" in part 2 of the answer is actually incorrect. Note: Tried editing the answer, but apparently some think that the highest rated answer being incorrect is hamiş reason enough to approve a correction edit.

In certain scenarios (such kakım using the value type birli a key in a dictionary) it sevimli murder performance in one foul swoop.

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:

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 birey't be overridden and always compares by reference.

This code technically works, but is sort of a hot mess and is hamiş really maintainable. Anyone using the library would have to write this code as well. The next logical step would be to just use .Equals on the entire metrics.

I never put much thought into using a struct over a class or even additional optimizations because to me the struct was optimized already. When I was working on fixing a bug in our DeviceDisplay to hamiş trigger new events unless a value changed a whole new world opened up to me.

So, I am apparently wrong as unequal objects may have equal hash codes. But isn't GetHashCode returning a somewhat randomly distributed kaş of values a requirement?

Kısaca anlayacağınız “int” gibi, “bool” üzere kıymet tipli bir mütehavvil tekvin etmek istiyorsanız struct yapısını yeğleme edebilirsiniz.

comparer IEqualityComparer İki nesnenin yeksan olup olmadığını gitmek bağırsakin kullanılacak yöntemi tanılamamlayan nesne.

Bir önceki konulemin aynısını AsOrdered extensionı ile konstrüksiyonldığında iş yeniden koşut olarak kuruluşlır, ancak akıbetlar sıralı evet.

C# IStructuralComparable Determines whether the current collection object C# IStructuralEquatable nedir precedes, occurs in the same position birli, or follows another object in the sort order.

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. The interface özgü two members: Equals, which tests for equality by using a specified IEqualityComparer implementation, and GetHashCode, which returns identical hash codes for objects that are equal.

You observations does derece conflict with the documentation and there is no bug in the implementation.

However, this is not so great if you are using the struct in a dictionary birli my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(