17.4

[mdeh]

Code: (Objective-C)

#import <Foundation/NSObject.h>
#import <Foundation/NSAutoreleasePool.h>
#import <Foundation/NSString.h>

@interface ClassA: NSObject
{
	NSString *str;
}

-(void) setStr: (NSString *) s;
-(NSString *) str;

@end

@implementation ClassA

-(void) setStr: (NSString *) s
{
	str = s;
	[str retain];
}

-(NSString *) str
{
	return str;
}

@end



int main (int argc, const char * argv[]) {
    NSAutoreleasePool			* pool = [[NSAutoreleasePool alloc] init];
	NSMutableString				*myStr = [NSMutableString stringWithString:@"A string"];
	ClassA *myA = [[ ClassA alloc] init];
	NSLog(@"myStr retain count %x", [myStr retainCount]);
	
	[myA setStr: myStr];
	NSLog(@"myStr retain count %x", [myStr retainCount]);
	
	[myStr release];
	NSLog(@"myStr retain count %x", [myStr retainCount]);
	
	[myA release];
    [pool drain];
    return 0;
}