Temel İlkeleri C# IStructuralEquatable nerelerde kullanılıyor

Temel İlkeleri C# IStructuralEquatable nerelerde kullanılıyor

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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 hamiş compare bey equal, the GetHashCode methods for the two object do derece have to return different values.

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

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

IStructuralComparable arayüzü, ekseri Array ve Tuple kabilinden veri konstrüksiyonları tarafından uygulanır. Bu muta strüktürları, elemanlarının sıralamasını ve yapkaloriı dikkate alarak içinlaştırma yapar.

You generic method saf a type parameter T but the type is derece part of the signature of the function so how is T supposed to be used in the function? Anyway, you güç use .Kemiksiz tuples or anonymous types to create hash codes by combining values but I am hamiş sure this answers your question.

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.

The IEquatable implementation will require one less cast for these classes and bey a result will be slightly faster than the standard object.Equals method that would be used otherwise. As an example see the different implementation of the two methods:

Ancak, articles1 ve articles3 dizileri aynı makale mirlıklarına farklı sıralarda mevla başüstüneğundan, CompareTo metodu farklı bir değer döndürür ve bu dizilerin strüktürel olarak tay olmadığını belirtir.

(doesn't violate documentation), but it is clearly hamiş as 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.

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Each of your objects should use a hashcode based on the contents of the object. If you have a value type containing 3 ints, use those when computing the hash code. Like this, all objects with identical content will have the same hash code, independent of app domain C# IStructuralEquatable Temel Özellikleri and other circumstances.

Defines methods to support the comparison of objects for structural equality. Structural equality means that two objects are equal because they have equal values.

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The Equals method supports custom structural comparison of array and tuple objects. This method in turn calls the comparer object's IEqualityComparer.Equals method to compare individual array elements or tuple components, starting with the first element or component.