Reports whether or not a value is in a bag.
- iOS 2.0+
- macOS 10.0+
- tvOS 9.0+
- watchOS 2.0+
- Core Foundation
The bag to examine.
The value to match in
the. The equal callback provided when
thewas created is used to compare. If the equal callback was
NULL, pointer equality (in C, ==) is used. If
value, or any other value in
the, is not understood by the equal callback, the behavior is undefined.
value is contained in