C# IStructuralEquatable nedir Için Adım Haritaya göre Yeni Adım

C# IStructuralEquatable nedir Için Adım Haritaya göre Yeni Adım

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Keep in mind that for this interface to work correctly, the types within the collection or structure must also implement IStructuralEquatable or provide their own structural equality logic.

In this case you don't want to change your class implementation so you don't wantoverride the Equals method. this will define a general way to compare objects in your application.

g. MyType and Object) which will still use the identity comparison. I suspect it's hamiş 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

Daniel A.A. PelsmaekerDaniel A.A. Pelsmaeker 49.2k2121 gold badges112112 silver badges160160 bronze badges 5 In addition to answers which point to duplicate hashcodes bey is documented behavior, some reasoning and reflection would also lead you to the same conclusion.

Ee sözcük gelimi struct gestaltsında da new işletmenünü kullanırsak şayet peki ilgili dokumadan bir nesne üretilecektir amma struct bir değer tipli değişebilir dokumasında olduğundan dolayı o nesne belleğin Stack kısmında saklama edilecektir.

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

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The following example creates two identical 3-tuple objects whose components consist of three Double values. The value of the second component is Double.NaN. The example then calls the Tuple.Equals method, and it calls C# IStructuralEquatable Nasıl kullanılır the IStructuralEquatable.Equals method three times. The first time, it passes the default equality comparer that is returned by the EqualityComparer.

(doesn't violate documentation), but it is clearly hamiş as good birli it would be if 0 were replaced with i. Also there's no reason to loop if the code were just going to use a single value from the array.

In addition to this awesome blog Frank and I also dicussed all of this awesome in detail on Merge Conflict on episode 111:

Programlama dillerinde en mühim OOP(Object Oriented Programing) gestaltlarından olan class binasına için daha gösterişsiz düzeyde meselelemler gerçekleştirmemizi sağlayıcı ve belli başlı bir takım kısıtlamaları nezdinde çitndıran struct yapısını C# diline özel ele alacağız.

The example on MSDN gives part of the answer here; it seems to be useful for heterogeneous equality, rather than homogeneous equality - i.e. for testing whether two objects (/values) of potentially different types

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.

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