Greatest Kılavuzu C# IStructuralEquatable Kullanımı için

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

= 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.

Other types which implement structural equality/comparability include tuples and anonymous types - which both clearly benefit from the ability to perform comparison based on their structure and content. A question you didn't ask is:

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

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

IStructuralEquatable is quite new and unknown, but I read somewhere that it kişi be used to compare the contents of collections and arrays. Am I wrong, or is my .Safi wrong?

I've noticed these two interfaces, and several associated classes, have been added in .NET 4. They seem a bit superfluous to me; I've read several blogs about them, but I still gönül't figure out what mesele they solve that was tricky before .Kupkuru 4.

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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 C# IStructuralEquatable Temel Özellikleri when computing the hash code. Like this, all objects with identical content will have the same hash code, independent of app domain and other circumstances.

Do hamiş send hash codes across application domains or processes. In some cases, hash codes may be computed on a per-process or per-application domain basis.

The IStructuralEquatable interface supports only custom comparisons for structural equality. The IStructuralComparable interface supports custom structural comparisons for sorting and ordering.

Specifically, I do derece know the exact type of the object. The only assumption I make is that it inherit from IStructuralEquatable.