keysOfEntries(passingTest:)
Returns the set of keys whose corresponding value satisfies a constraint described by a block object.
Declaration
func keysOfEntries(passingTest predicate: (Any, Any, UnsafeMutablePointer<ObjCBool>) -> Bool) -> Set<AnyHashable>Parameters
- predicate:
A block object that specifies constraints for values in the dictionary.
Return Value
The set of keys whose corresponding value satisfies predicate.