Returns a requested value from a bag.
SDKs
- iOS 2.0+
- macOS 10.0+
- Mac Catalyst 13.0+
- tvOS 9.0+
- watchOS 2.0+
Framework
- Core Foundation
Declaration
const void * CFBagGetValue(CFBagParameters
theBagThe bag to examine.
valueThe value for which to find matches in
the. The equal callback provided whenBag thewas created is used to compare. If the equal callback wasBag NULL, pointer equality (in C, ==) is used. Ifvalue, or any other value inthe, is not understood by the equal callback, the behavior is undefined.Bag
Return Value
A pointer to value, or NULL if value is not in the. If the value is a Core Foundation object, ownership follows the The Get Rule.
Discussion
Depending on the implementation of the equal callback specified when creating the, the value returned may not have the same pointer equality as value.