Equivalent to strong.
SDKs
- iOS 6.0+
- macOS 10.5+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Foundation
Declaration
let NSMapTableStrongMemory: NSPointerGlobal VariableNSMap
NSMap
See Also
Memory Options
static var machUse Mach memory.
static var mallocUse free() on removal, calloc() on copy in.
static var opaqueTake no action when pointers are deleted.
static var strongUse strong write-barriers to backing store; use garbage-collected memory on copy-in.
static var weakUses weak read and write barriers appropriate for ARC or GC. Using NSPointerFunctionsWeakMemory object references will turn to NULL on last release.