Foreword

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

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
ranges and indexes
readonly instance members
name shadowing in nested functions
static local functions
?? Disposable ref structs