Initializing arrays is C# has always been easier than initializing other collections. In C#12 we can do it all in the same way.

Source code available at: https://github.com/JasperKent/Collect...

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Topics include:
- Brief history of array initialization
- C#3 collection initializers
- Creating empty collections
- C#12 collection expressions
- Problems initializing Dictionaries
- Initializing multidimensional arrays
- The C#12 spread operator (..)
- Using collection expressions and spread with custom collections
- Initializing with the CollectionBuilder attribute