The next major version release of the C# language comes with exciting new features. One of them is nullable reference type, which helps prevent the unhandled null reference exceptions that have ruined our apps at some point. Read along while I introduce you to this new feature.
Indexers allow instances of a class to be indexed just like arrays, and are declared similarly to methods. They can be useful when working with your own collection class. Let's learn how to define and work with indexers.
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