Açıklaması C# IStructuralEquatable Nasıl kullanılır Hakkında 5 Basit Tablolar

Açıklaması C# IStructuralEquatable Nasıl kullanılır Hakkında 5 Basit Tablolar

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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.

1 How do such comparators relate to things like Dictionary and other collections? I know that Dictionary seems to handle structures sensibly albeit slowly in .

This is really amazing code and works great for .Kemiksiz Standard libraries. If you are in a .Kupkuru Core 2.1 application there is an even cooler way of doing this:

LBushkinLBushkin 131k3333 gold badges217217 silver badges265265 bronze badges 11 8 Why birey't you just specify an IEqualityComparer yourself that does this? What does the IStructuralEquatable interface add to this?

I'm amazed that the most important reason is hamiş mentioned here. IEquatable was introduced mainly for structs for two reasons:

Your concern is that Object.GetHashCode() does derece provide values that are stable and the concern is very valid as hayat be seen in the first box headed by Caution in the documentation:

Is Légal’s reported “psychological trick” considered fair play or unacceptable conduct under FIDE rules?

The following example creates two identical 3-tuple objects whose components consist of three C# IStructuralEquatable Kullanımı 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.

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

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C# IStructuralEquatable Defines methods to support the comparison of objects for structural equality.

Now that our struct is immutable the actual issue comes up when you need to compare these values. When I started to write the code to fix the bug I just decided that "hey I have the old values, I güç just compare each of them":

Here the comparison is different for value type arrays and custom arrays. In .Kupkuru 4.0 int, string will internally implement IEquatable for custom types we have to externally implement the IEquatable.

While writing my own immutable ByteArray class that uses a byte array internally, I implemented the IStructuralEquatable interface.