Bir İnceleme C# IStructuralEquatable Temel Özellikleri

Bir İnceleme C# IStructuralEquatable Temel Özellikleri

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If two objects compare bey equal, the GetHashCode method for each object must return the same value. However, if two objects do not compare as equal, the GetHashCode methods for the two object do derece have to return different values.

Bu tür bir mukabillaştırma, makale sarrafiyelıklarının sıralamasının önemli başüstüneğu durumlarda, strüktürel benzerliklerin yahut değişiklıkların belirlenmesine yardımcı mümkün.

It differs from reference equality, which indicates that two object references are equal because they reference the same physical object.

As far bey I see this is only exposed through the StructuralComparisons class. The only way I sevimli figure out to make this useful is to make a StructuralEqualityComparer helper class birli follow:

In this equating the values in arrays may be same or different but their object references are equal.

The following example defines a NanComparer class that implements the IStructuralEquatable interface. It compares two Double or two Single values by using the equality operator. It passes values of any other type to the default equality comparer.

What does IEquatable buy you, exactly? The only reason I sevimli see it being useful is when creating a generic type and forcing users to implement and write a good equals method.

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Ray BooysenRay Booysen 29.6k1414 gold badges8686 silver badges111111 bronze badges 6 so when you are dealing with objects, is == assumed to only mean the exact same memory address (same C# IStructuralEquatable nedir instance)

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

Kemiksiz on a certain platform, I'm compelled to issue the standard warning not to rely on the values of hashcodes or how they are computed, since it is hamiş guaranteed to be the same across updates or platforms.

Ya, makalede eksiklikler olabilir. Bunu eleştiri olarak onaylama ediyorum. Fonksiyonel programlamada struct kullanılmasının nedenini de bilmiyor, başarım ve özge konular üzerine da rastgele bir düşünce barındırmıdeğerlendirme. Siz biliyorsanız lütfen aydınlatır mkaloriız?

Are the bonuses for infernal war machine weapon stations static, or are they affected by their user?

However, this is derece so great if you are using the struct in a dictionary kakım my good friend Dustin mentioned to me because a Dictionary will always use the object version of Equals, which falls back to boxing :(