Why it matters

Scala 3 is the future. Understanding shapes migration + new project design.

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The architecture

Enums: 'enum Color { case Red, Green, Blue }'.

Given: 'given intOrdering: Ordering[Int] = ...'.

Scala 3 highlightsEnumscleaner ADTsGiven/usingcleaner implicitsExtension methodsclear syntaxFull backward compat via -Xsource:3 flag; migration paths exist
Scala 3 features.
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How it works end to end

Extension: 'extension (i: Int) def isEven: Boolean = i % 2 == 0'.

Optional braces / indented syntax.

Union types: 'Int | String'.

Match types: type-level pattern matching.

Metaprogramming: quotes + splices replace macros.