The aim of this project is to provide an easy to use and object-oriented way to object association in Cocoa. Using this code will allow you to append and recieve instance variables to any object at runtime.

- (void)setProperty:(id)property forKey:(char const * const)key withPolicy:(AssociantionPolicy)policy;

Sets the association between any property for a specific key.

• @param property - the associated object
• @param key - the key to identify the associated object
• @param policy - the memory management policy

- (id)getPropertyForKey:(char const * const)key;

returns the associated object for a given key.

• @param key - the key to identify the associated object
• @return the assiciated object

- (BOOL)hasPropertyForKey:(char const * const)key;

determines if there is a object for a given key.

• @param key - the key to identify the associated object
• @return a boolean value indicating if there is a associated object for a given key

static char const * const _ORIGIN_KEY   = "origin";

- (void)addProperty
{
    NSString *_helloString = @"Hello World!";
    NSString *_originString = @"Austria is calling";
    
    [_helloString setProperty:_originString
                       forKey:_ORIGIN_KEY
                   withPolicy:RETAIN_NONATOMIC_POLICY];
    
    if( [_helloString hasPropertyForKey:_ORIGIN_KEY] )
        NSLog(@"%@", [_helloString getPropertyForKey:_ORIGIN_KEY]);
}