struct Unmanaged A type for propagating an unmanaged object reference. When you use this type, you become partially responsible for keeping the object alive. Instance Methods func autorelease() -> Unmanaged<Instance> Required Performs an unbalanced autorelease of the object. Declaration public func autorelease() -> Unmanaged<Instance> func release() Required Performs an unbalanced release of the object. Declaration public func release() func retain() -> Unmanaged<Instance> Required Performs an unbalanced retain of the object. Declaration public func retain() -> Unmanaged<Instance> func takeRetainedValue() -> Instance Required Gets the value of this unmanaged reference as a managed reference and consumes an unbalanced retain of it. This is useful when a function returns an unmanaged reference and you know that you're responsible for releasing the result. Declaration public func takeRetainedValue() -> Instance func takeUnretainedValue() -> Instance Required Gets the value of this unmanaged reference as a managed reference without consuming an unbalanced retain of it. This is useful when a function returns an unmanaged reference and you know that you're not responsible for releasing the result. Declaration public func takeUnretainedValue() -> Instance func toOpaque() -> UnsafeMutableRawPointer Required Unsafely converts an unmanaged class reference to a pointer. This operation does not change reference counts. let str0 = "boxcar" as CFString let bits = Unmanaged.passUnretained(str0) let ptr = bits.toOpaque() Declaration public func toOpaque() -> UnsafeMutableRawPointer Type Methods func fromOpaque(_ value: UnsafeRawPointer) -> Unmanaged<Instance> Required Unsafely turns an opaque C pointer into an unmanaged class reference. This operation does not change reference counts. let str: CFString = Unmanaged.fromOpaque(ptr).takeUnretainedValue() Parameter value: An opaque C pointer. Declaration public static func fromOpaque(_ value: UnsafeRawPointer) -> Unmanaged<Instance> func passRetained(_ value: Instance) -> Unmanaged<Instance> Required Creates an unmanaged reference with an unbalanced retain. The instance passed as value will leak if nothing eventually balances the retain. This is useful when passing an object to an API which Swift does not know the ownership rules for, but you know that the API expects you to pass the object at +1. Parameter value: A class instance. Declaration public static func passRetained(_ value: Instance) -> Unmanaged<Instance> func passUnretained(_ value: Instance) -> Unmanaged<Instance> Required Creates an unmanaged reference without performing an unbalanced retain. This is useful when passing a reference to an API which Swift does not know the ownership rules for, but you know that the API expects you to pass the object at +0. CFArraySetValueAtIndex(.passUnretained(array), i, .passUnretained(object)) Parameter value: A class instance. Declaration public static func passUnretained(_ value: Instance) -> Unmanaged<Instance>