Unsafely converts an unmanaged class reference to a pointer.
func toOpaque() -> UnsafeMutableRawPointer An opaque pointer to the value of this unmanaged reference.
This operation does not change reference counts.
let str0 = "boxcar" as CFString
let bits = Unmanaged.passUnretained(str0)
let ptr = bits.toOpaque()import Swift@frozen struct Unmanaged<Instance> where Instance : AnyObjectA type for propagating an unmanaged object reference.
@frozen struct UnsafeMutableRawPointerA raw pointer for accessing and manipulating untyped data.
static func fromOpaque(_ value: UnsafeRawPointer) -> Unmanaged<Instance> Unsafely turns an opaque C pointer into an unmanaged class reference.
static func passRetained(_ value: Instance) -> Unmanaged<Instance> Creates an unmanaged reference with an unbalanced retain.
static func passUnretained(_ value: Instance) -> Unmanaged<Instance> Creates an unmanaged reference without performing an unbalanced retain.
func release() Performs an unbalanced release of the object.
func retain() -> Unmanaged<Instance> Performs an unbalanced retain of the object.
func takeRetainedValue() -> Instance Gets the value of this unmanaged reference as a managed reference and consumes an unbalanced retain of it.
func takeUnretainedValue() -> Instance Gets the value of this unmanaged reference as a managed reference without consuming an unbalanced retain of it.