1.1 --- a/CollectionUtils.m	Sat May 24 13:24:33 2008 -0700
     1.2 +++ b/CollectionUtils.m	Tue May 12 14:38:30 2009 +0200
     1.3 @@ -180,6 +180,59 @@
     1.4  }
     1.5  
     1.6  
     1.7 +BOOL kvSetSet( id owner, NSString *property, NSMutableSet *set, NSSet *newSet ) {
     1.8 +    CAssert(set);
     1.9 +    if (!newSet)
    1.10 +        newSet = [NSSet set];
    1.11 +    if (![set isEqualToSet: newSet]) {
    1.12 +        [owner willChangeValueForKey: property
    1.13 +                     withSetMutation:NSKeyValueSetSetMutation 
    1.14 +                        usingObjects:newSet]; 
    1.15 +        [set setSet: newSet];
    1.16 +        [owner didChangeValueForKey: property 
    1.17 +                    withSetMutation:NSKeyValueSetSetMutation 
    1.18 +                       usingObjects:newSet]; 
    1.19 +        return YES;
    1.20 +    } else
    1.21 +        return NO;
    1.22 +}
    1.23 +
    1.24 +
    1.25 +BOOL kvAddToSet( id owner, NSString *property, NSMutableSet *set, id objToAdd ) {
    1.26 +    CAssert(set);
    1.27 +    if (![set containsObject: objToAdd]) {
    1.28 +        NSSet *changedObjects = [[NSSet alloc] initWithObjects: &objToAdd count: 1];
    1.29 +        [owner willChangeValueForKey: property
    1.30 +                     withSetMutation: NSKeyValueUnionSetMutation 
    1.31 +                        usingObjects: changedObjects]; 
    1.32 +        [set addObject: objToAdd];
    1.33 +        [owner didChangeValueForKey: property 
    1.34 +                    withSetMutation: NSKeyValueUnionSetMutation 
    1.35 +                       usingObjects: changedObjects]; 
    1.36 +        [changedObjects release];
    1.37 +        return YES;
    1.38 +    } else
    1.39 +        return NO;
    1.40 +}
    1.41 +
    1.42 +
    1.43 +BOOL kvRemoveFromSet( id owner, NSString *property, NSMutableSet *set, id objToRemove ) {
    1.44 +    if ([set containsObject: objToRemove]) {
    1.45 +        NSSet *changedObjects = [[NSSet alloc] initWithObjects: &objToRemove count: 1];
    1.46 +        [owner willChangeValueForKey: property
    1.47 +                     withSetMutation: NSKeyValueMinusSetMutation 
    1.48 +                        usingObjects: changedObjects]; 
    1.49 +        [set removeObject: objToRemove];
    1.50 +        [owner didChangeValueForKey: property 
    1.51 +                    withSetMutation: NSKeyValueMinusSetMutation 
    1.52 +                       usingObjects: changedObjects]; 
    1.53 +        [changedObjects release];
    1.54 +        return YES;
    1.55 +    } else
    1.56 +        return NO;
    1.57 +}
    1.58 +
    1.59 +
    1.60  @implementation NSArray (MYUtils)
    1.61  
    1.62  - (BOOL) my_containsObjectIdenticalTo: (id)object