NSMapInsertIfAbsent(_:_:_:)

Declaration

func NSMapInsertIfAbsent(_ table: NSMapTable<AnyObject, AnyObject>, _ key: UnsafeRawPointer?, _ value: UnsafeRawPointer?) -> UnsafeMutableRawPointer?

Return Value

If key matches a key already in table, the preexisting value; otherwise, key and value are added to table and returns NULL.

Discussion

Raises NSInvalidArgumentException if key is equal to the notAKeyMarker field of the table’s NSMapTableKeyCallBacks structure.

See Also

Related Documentation

• NSMapRemove(_:_:)
• NSMapInsert(_:_:_:)
• NSMapInsertKnownAbsent(_:_:_:)

Functions

• NSAllMapTableKeys(_:)
• NSAllMapTableValues(_:)
• NSCompareMapTables(_:_:)
• NSCopyMapTableWithZone(_:_:)
• NSCountMapTable(_:)
• NSCreateMapTable(_:_:_:)
• NSCreateMapTableWithZone(_:_:_:_:)
• NSEndMapTableEnumeration(_:)
• NSEnumerateMapTable(_:)
• NSFreeMapTable(_:)
• NSMapGet(_:_:)
• NSMapInsert(_:_:_:)
• NSMapInsertKnownAbsent(_:_:_:)
• NSMapMember(_:_:_:_:)
• NSMapRemove(_:_:)