struct AutoreleasingUnsafeMutablePointer<Memory>
Inheritance |
CVarArgType, CustomDebugStringConvertible, Equatable, NilLiteralConvertible, _PointerType
View Protocol Hierarchy →
|
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Import | import Swift |
Initializers
Initialize to a null pointer.
Deprecated: init() will be removed in Swift 3. Use nil
instead.
Declaration
init()
Explicit construction from an UnsafeMutablePointer.
This is inherently unsafe; UnsafeMutablePointer assumes the referenced memory has +1 strong ownership semantics, whereas AutoreleasingUnsafeMutablePointer implies +0 semantics.
Declaration
init<U>(_ ptr: UnsafeMutablePointer<U>)
Instance Variables
A textual representation of self
, suitable for debugging.
Declaration
var debugDescription: String { get }
Access the underlying raw memory, getting and setting values.
Declaration
var memory: Memory { get set }
Subscripts
Access the i
th element of the raw array pointed to by
self
.
Requires: self != nil
.
Declaration
subscript(i: Int) -> Memory { get }
A mutable pointer-to-ObjC-pointer argument.
This type has implicit conversions to allow passing any of the following to a C or ObjC API:
nil
, which gets passed as a null pointer,UnsafeMutablePointer<Memory>
, which is passed as-is.Passing pointers to mutable arrays of ObjC class pointers is not directly supported. Unlike
UnsafeMutablePointer<Memory>
,AutoreleasingUnsafeMutablePointer<Memory>
must reference storage that does not own a reference count to the referenced value. UnsafeMutablePointer's operations, by contrast, assume that the referenced storage owns values loaded from or stored to it.This type does not carry an owner pointer unlike the other C*Pointer types because it only needs to reference the results of inout conversions, which already have writeback-scoped lifetime.