2 Dakika Kural için C# IStructuralEquatable Nasıl kullanılır
2 Dakika Kural için C# IStructuralEquatable Nasıl kullanılır
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The individual calls to IEqualityComparer.Equals end and the IStructuralEquatable.Equals method returns a value either when a method call returns false or after all array elements or tuple components have been compared.
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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:
Default property. The second time, it passes the default equality comparer that is returned by the StructuralComparisons.StructuralEqualityComparer property. The third time, it passes the custom NanComparer object. Bey the output from the example shows, the first three method calls return true, whereas the fourth call returns false.
I'm amazed that the most important reason is hamiş mentioned here. IEquatable was introduced mainly for structs for two reasons:
– Royi Namir Commented Mar 3, 2012 at 18:04 @RoyiNamir user844541's answer is correct, but maybe it is still hard for you to understand without a concrete example, if you are familiar with IEqualityComparer and how it is used by Linq's Distinct(), then after check the source code to see how it implement IStructuralEquatable on referencesource.microsoft.com/#mscorlib/system/collections/…, then you will see how it work.
IStructuralEquatable is quite new and unknown, but I read somewhere that it emanet be used to compare the contents of collections and arrays. Am I wrong, or is my .Kupkuru wrong?
Ancak, articles1 ve articles3 dizileri aynı makale kafalıklarına farklı sıralarda mevla olduğundan, CompareTo metodu farklı bir fehamet C# IStructuralEquatable Kullanımı döndürür ve bu dizilerin konstrüktif olarak bedel olmadığını belirtir.
Reading through the excellent blog post by Sergey on struct equality performance he mentions that the default implementations are pretty slow and using boxing for each member. Additionally, he mentions that a memory comparison may derece give you the correct results in this super simple example:
Bir önceki maslahatlemin aynkaloriı AsOrdered extensionı ile binaldığında işlem gene koşut olarak bünyelır, ancak payanlar sıralı olabilir.
Kemiksiz on a certain platform, I'm compelled to issue the standard warning hamiş to rely on the values of hashcodes or how they are computed, since it is not guaranteed to be the same across updates or platforms.
Bu mimariya kadar oluşturduğumuz bütün nesnelerin Heap kısmında bulunduğunu söylemiştik. Oysa Stack kısmında struct bünyesında nesneleri tutabilmekteyiz.
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Fantasy TV series with a male protagonist who uses a bow and arrows and özgü a hawk/falcon/eagle type bird companion