The following pages document new features of Scala 3.

Table of Contents

• Trait Parameters
• Transparent Traits and Classes
• Universal Apply Methods
• Export Clauses
• Opaque Type Aliases
• Opaque Type Aliases: More Details
• Named Tuples
• Open Classes
• Parameter Untupling
• Generalized Method Syntax
• Kind Polymorphism
• The Matchable Trait
• The @threadUnsafe annotation
• The @targetName annotation
• New Control Syntax
• Optional Braces
• Safe Initialization
• TypeTest
• Experimental Definitions
• Preview Definitions
• Binary Integer Literals
• Toplevel Definitions
• Better fors
• The runtimeChecked method
• The `into` Type and Modifier