Benim C# IStructuralEquatable Nasıl kullanılır Başlarken Çalışmak

Benim C# IStructuralEquatable Nasıl kullanılır Başlarken Çalışmak

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That is, you gönül create your own definition of structural equality and specify that this definition be used with a collection type that accepts the IStructuralEquatable interface.

Now, when we call Equals ourselves it will directly call our new fancy Equals that takes in a ScreenMetrics, which is great.

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.

Do derece fear because if you simply implement IEquatable the dictionary will use the strongly typed version! The birçok thing is that we kind of actually already did this! So now we just have to do this:

It is used by the third example as an argument to the Equals(Object, IEqualityComparer) method of the IStructuralEquatable interface that tuples implement. 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.

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The IEquatable implementation will require one less cast for these classes and kakım 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:

Defines a generalized method that a value type or class implements to create a type-specific method for determining equality of instances.

comparer IEqualityComparer İki nesnenin yeksan olup olmadığını değerlendirmek için kullanılacak yöntemi tanımlayan nesne.

In Xamarin.Essentials we use the C# struct all over the place to encapsulate "small groups of related variables" for our event handlers. They are groups of veri that don't need to be created by the developers consuming the data and are only really used for reading the data.

C# IStructuralComparable Determines C# IStructuralEquatable nerelerde kullanılıyor whether the current collection object precedes, occurs in the same position as, or follows another object in the sort order.

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There is no need for an equality operator that accepts different types. That should hamiş even compile. So this is a very weak excuse for having a non-generic interface that works with objects.

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