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C# 13–Implicit index access

New features keeps getting added to C#. With the release of C# 13 as part of .NET 9, you can now use the implicit index operator, ^ , to initialize a collection in reverse order.

Before C# 13, you had to index elements from the front when using an object initializer. With the introduction of this operator, you get better readability and it  can help avoid potential off-by-one errors.

More information

What's new in C# 13 | Microsoft Learn

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