C Interoperability

Topics

C and Objective-C Pointers

• OpaquePointer
• AutoreleasingUnsafeMutablePointer

C Variadic Functions

• withVaList(_:_:)
• CVaListPointer
• CVarArg
• getVaList(_:)

Pointers to Values

• withUnsafePointer(to:_:)
• withUnsafePointer(to:_:)
• withUnsafeMutablePointer(to:_:)
• withUnsafeBytes(of:_:)
• withUnsafeBytes(of:_:)
• withUnsafeMutableBytes(of:_:)

Aliases for Imported C Types

• CBool
• CChar
• CChar8
• CChar16
• CChar32
• CDouble
• CLongDouble
• CFloat
• CFloat16
• CInt
• CLong
• CLongLong
• CShort
• CSignedChar
• CUnsignedChar
• CUnsignedInt
• CUnsignedLong
• CUnsignedLongLong
• CUnsignedShort
• CWideChar

See Also

Programming Tasks

• Input and Output
• Debugging and Reflection
• Macros
• Concurrency
• Key-Path Expressions
• Manual Memory Management
• Type Casting and Existential Types
• Operator Declarations