Function xpc _dictionary _get _double
primitive value from a dictionary directly.
macOS 10.7+ Mac Catalyst 13.0+ Beta Declaration double xpc_dictionary_get_double( xdict, xpc _object _t const char *key);
The dictionary object which is to be examined.
The key whose value is to be obtained.
value for the specified key. NAN if the value for the specified key is not a floating point value or if there is no value for the specified key.
double See Also Miscellaneous xpc _array _get _data
Gets a pointer to the raw bytes of a data object from an array directly.
xpc _fd _create
Creates an XPC object representing a POSIX file descriptor.
xpc _fd _dup
Returns a file descriptor that is equivalent to the one boxed by the file descriptor object.
Calculates a hash value for the given object.
Decrements the reference count of an object.
Increments the reference count of an object.
xpc _shmem _create
Creates an XPC object representing the given shared memory region.
xpc _shmem _map
Maps the region boxed by the XPC shared memory object into the caller’s address space.
xpc _uuid _create
Creates an XPC object representing a universally-unique identifier (UUID) as described by uuid(3).
This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.
Learn more about using Apple's beta software