Labels

• actor isolation

  Feature → concurrency: Actor isolation
• affects ABI

  Flag: Affects ABI
• Android

  Platform: Android
• Any

  Feature → types: The `Any` built-in type
• AnyKeyPath

  Area → standard library: The `AnyKeyPath` type
• AnyObject

  Feature → types: The `AnyObject` built-in type
• ARC

  Feature: automatic reference counting
• argument labels

  Feature: function argument labels
• arm

  Architecture: any ARM
• arm64

  Architecture: arm64 (aarch64) — any 64-bit ARM
• armhf

  Architecture: the Debian port for ARM processors (armv7+) that have hardware floating point support
• armv7

  Architecture: ARMv7
• armv8

  Architecture: ARMv8
• Array

  Area → standard library: The `Array` type
• array literals

  Feature → expressions → literals: Array literals
• assertion failure

  Bug → crash: An assertion failure
• assignments

  Feature → expressions: assignments
• associated type inference
• associated values

  Feature → enums: enum cases with associated values (payload)
• associatedtype

  Feature → declarations → protocol: `associatedtype` declarations
• AST

  Area → compiler: The libSwiftAST library
• ASTDumper

  Area → compiler: The AST debug format printer
• ASTGen

  Area → compiler: The ASTGen module, which translates SwiftSyntax trees to the C++ AST
• ASTPrinter

  Area → compiler: The AST printer
• async & await

  Feature → concurrency: asynchronous function aka the async/await pattern
• attributes

  Feature: Declaration and type attributes
• AutoDiff
• autolinking
• availability

  The @available attribute and availability checking in general
• backticked identifiers

  Feature → identifiers: Backticked identifiers. Allows using reserved words as identifiers