Union types in Scala 3 enable direct specification of multiple accepted types for function parameters. This offers flexibility while providing better documentation of allowed types.
In Scala 2, you had to use Any and pattern-match on types, which was less direct and less clear. Scala 3's union types offer a much clearer alternative.
Using union types improves code clarity by explicitly stating allowed input types, enhancing both documentation and type safety in your functions.
The addition of union types to Scala 3 introduces a dynamic feature traditionally seen in dynamically-typed languages, promoting cleaner and more versatile code in a statically-typed environment.
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