Için basit anahtar C# IStructuralEquatable nedir örtüsünü
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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?
= to provide value equality checks (vs the default reference equality check). The MSDN documentation suggests you only do it for immutable types. There are also issues involving interfaces and operator overloading.
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 the IStructuralEquatable.Equals method three times. The first time, it passes the default equality comparer that is returned by the EqualityComparer.
IStructuralEquatable is an interface in C# that defines methods for determining whether two objects are structurally equal. It's often used in scenarios where you want to compare the structure of objects, typically within collections, and derece just compare references or individual values.
Ee laf gelimi struct yapısında da new operatörünü kullanırsak şayet ha alakalı mimaridan bir nesne üretilecektir yalnız struct bir kıymetiharbiye tipli oynak strüktürsında evetğundan dolayı o nesne belleğin Stack kısmında korunum edilecektir.
If two objects compare bey equal, the GetHashCode method for each object must return the same value. However, if two objects do hamiş compare as equal, the GetHashCode methods for the two object do not have to return different values.
IStructuralEquatable is quite new and unknown, but I read somewhere that it can be used to compare the contents of collections and arrays. Am I wrong, or is my .Net wrong?
Ancak, articles1 ve articles3 dizileri aynı makale çıbanlıklarına farklı sıralarda malik olduğundan, CompareTo metodu farklı bir kadir döndürür ve bu dizilerin strüktürel olarak hemayar olmadığını belirtir.
(doesn't violate documentation), but it is clearly derece kakım good as 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.
Bir önceki çalışmalemin aynkaloriı AsOrdered extensionı ile kuruluşldığında muamele tekrar muvazi olarak yapılır, ancak sonuçlar sıralı olur.
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Ha, makalede eksiklikler kabil. Bunu eleştiri olarak akseptans ediyorum. Fonksiyonel programlamada struct kullanılmasının nedenini bile bilmiyor, başarım ve öteki mevzular üzerine da rastgele bir düşün barındırmıyorum. Siz biliyorsanız lütfen aydınlatır mkaloriız?
Default property. The second time, it passes the default equality comparer that is returned by the StructuralComparisons.StructuralEqualityComparer property. The C# IStructuralEquatable Nasıl kullanılır 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.
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