1.1 --- a/CollectionUtils.h	Mon Apr 14 13:58:48 2008 -0700
     1.2 +++ b/CollectionUtils.h	Tue Apr 15 18:02:40 2008 -0700
     1.3 @@ -45,6 +45,12 @@
     1.4  @end
     1.5  
     1.6  
     1.7 +@interface NSSet (MYUtils)
     1.8 ++ (NSSet*) my_unionOfSet: (NSSet*)set1 andSet: (NSSet*)set2;
     1.9 ++ (NSSet*) my_differenceOfSet: (NSSet*)set1 andSet: (NSSet*)set2;
    1.10 +@end
    1.11 +
    1.12 +
    1.13  #pragma mark -
    1.14  #pragma mark FOREACH:
    1.15      

     2.1 --- a/CollectionUtils.m	Mon Apr 14 13:58:48 2008 -0700
     2.2 +++ b/CollectionUtils.m	Tue Apr 15 18:02:40 2008 -0700
     2.3 @@ -160,6 +160,37 @@
     2.4  @end
     2.5  
     2.6  
     2.7 +
     2.8 +@implementation NSSet (MYUtils)
     2.9 ++ (NSSet*) my_unionOfSet: (NSSet*)set1 andSet: (NSSet*)set2
    2.10 +{
    2.11 +    if( set1 == set2 || set2.count==0 )
    2.12 +        return set1;
    2.13 +    else if( set1.count==0 )
    2.14 +        return set2;
    2.15 +    else {
    2.16 +        NSMutableSet *result = [set1 mutableCopy];
    2.17 +        [result unionSet: set2];
    2.18 +        return [result autorelease];
    2.19 +    }
    2.20 +}
    2.21 +
    2.22 ++ (NSSet*) my_differenceOfSet: (NSSet*)set1 andSet: (NSSet*)set2
    2.23 +{
    2.24 +    if( set1.count==0 || set2.count==0 )
    2.25 +        return set1;
    2.26 +    else if( set1==set2 )
    2.27 +        return [NSSet set];
    2.28 +    else {
    2.29 +        NSMutableSet *result = [set1 mutableCopy];
    2.30 +        [result minusSet: set2];
    2.31 +        return [result autorelease];
    2.32 +    }
    2.33 +}
    2.34 +@end
    2.35 +
    2.36 +
    2.37 +
    2.38  #import "Test.h"
    2.39  
    2.40  TestCase(CollectionUtils) {

     3.1 --- a/GraphicsUtils.m	Mon Apr 14 13:58:48 2008 -0700
     3.2 +++ b/GraphicsUtils.m	Tue Apr 15 18:02:40 2008 -0700
     3.3 @@ -222,7 +222,7 @@
     3.4      NSMutableArray *windows = $marray();
     3.5      for( NSWindow *window in [NSApp windows] ) {
     3.6          id delegate = window.delegate;
     3.7 -        if( (window.isVisible || window.isMiniaturized) && [delegate isKindOfClass: klass] ) 
     3.8 +        if( (window.isVisible || window.isMiniaturized) && (klass==nil || [delegate isKindOfClass: klass]) ) 
     3.9              [windows addObject: window];
    3.10      }
    3.11      return windows;