gistfile1.m

#define NSDICT(...) [NSDictionary dictionaryWithObjectsAndKeys: __VA_ARGS__, nil]
#define NSARRAY(...) [NSArray arrayWithObjects: __VA_ARGS__, nil]
#define NSBOOL(_X_) [NSNumber numberWithBool:(_X_)]

//example usage

NSArray *items = NSARRAY(NSDICT(@"Hello World!", @"title",
                                [NSImage imageNamed:@"worldHello"], @"icon",
                                NSBOOL(YES), @"isAwesome"),
                         NSDICT(@"Good Bye, World!", @"title",
                                [NSImage imageNamed:@"winkyfrownyface"], @"icon",
                                NSBOOL(NO), @"isAwesome"));