NSMapTable Class Reference

Tasks

Creating and Initializing a Map Table

• – initWithKeyOptions:valueOptions:capacity:
• + mapTableWithKeyOptions:valueOptions:
• – initWithKeyPointerFunctions:valuePointerFunctions:capacity:
• + mapTableWithStrongToStrongObjects
• + mapTableWithWeakToStrongObjects
• + mapTableWithStrongToWeakObjects
• + mapTableWithWeakToWeakObjects

Accessing Content

• – objectForKey:
• – keyEnumerator
• – objectEnumerator
• – count

Manipulating Content

• – setObject:forKey:
• – removeObjectForKey:
• – removeAllObjects

Creating a Dictionary Representation

• – dictionaryRepresentation

Accessing Pointer Functions

• – keyPointerFunctions
• – valuePointerFunctions

NSEnumerator *enumerator = [myMapTable keyEnumerator];

id value;

while ((value = [enumerator nextObject])) {

    /* code that acts on the map table's keys */

}

NSEnumerator *enumerator = [myMapTable objectEnumerator];

id value;

while ((value = [enumerator nextObject])) {

    /* code that acts on the map table's values */

}

enum {
   NSMapTableStrongMemory             = 0,
   NSMapTableZeroingWeakMemory        = NSPointerFunctionsZeroingWeakMemory,
   NSMapTableCopyIn                   = NSPointerFunctionsCopyIn,
   NSMapTableObjectPointerPersonality = NSPointerFunctionsObjectPointerPersonality
};
typedef NSUInteger NSMapTableOptions;