Foreword

This specification replaces ECMA-334:2023. Changes from the previous edition include the addition of the following features:

• enhanced interpolated verbatim strings
• asynchronous streams
• using declarations and async using
• generic method override with constraints
• unmanaged constructed types
• default member implementations in interfaces
• permit stackalloc in nested contexts
• notnull constraint
• null coalescing assignment
• nullable reference types
• positional, property, and discard patterns
• ranges and indexes
• readonly instance members
• name shadowing in nested functions
• static local functions
• Disposable ref structs