nsautoreleasepool

I have test code like this - (void)viewDidLoad { [super viewDidLoad]; NSThread *thread = [[NSThread alloc] initWithTarget:self selector:@selector(test) object:nil]; [thread start]; } -(void)test { MyClass *my = [[[MyClass alloc] init] autorelease]; NSLog(@"%@",[my description]); } I did not create any autoreleasepool for my own thread, but when the thread exit, object "my" just dealloc.why? even though I change my test code as below - (void)viewDidLoad { [super viewDidLoad]; NSThread *thread = [[NSThread alloc] initWithTarget:self selector:@selector(test) object:nil]; [thread start]; } -(void

I wanted to get something clarified. Lets say I have the following code: - (void) viewDidAppear:(BOOL)animated { [super viewDidAppear:animated]; for (int i = 0; i < 5000000; i++) { NSString *s = [NSString stringWithFormat:@"Hello, %@!", @"World"]; } } This will create 5 million autoreleased strings within this function call. I was expecting this to keep those objects around until the termination of the application, as the only @autoreleasepool I see is the one wrapping the application instantiation in main.m. That's not the case, though. At the end of this function call, it seems they all get

I read this: If you ever create a secondary thread in your application, you need to provide it with its own autorelease pool. Autorelease pools and the objects they contain are discussed further in in the iOS 5 Developer cookbook. I'm compiling with ARC. I have been creating many background threads, and it seems that I am doing fine. None of my background threads are long-running. Will all those objects ever be released by say, the main thread's autorelease pool? Or what? This is what I do to call background thread: +(void)doBackground:(void (^)())block { //DISPATCH_QUEUE_PRIORITY_HIGH /

I am following "Programming in Objective-C" 3 rd edition and I am having problems with the first example. I keep getting this error: Semantic Issue: 'NSAutoreleasePool' is unavailable: not available in automatic reference counting mode Here is my code: // // main.m // prog1 // // Created by Steve Kochan on 1/30/11. // Copyright 2011 ClassroomM, Inc.. All rights reserved. // #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSLog (@"Programming is fun!"); [pool drain]; return 0; } Any insight will be greatly

As I understand it, anything created with an alloc , new , or copy needs to be manually released. For example: int main(void) { NSString *string; string = [[NSString alloc] init]; /* use the string */ [string release]; } My question, though, is wouldn't this be just as valid?: int main(void) { NSAutoreleasePool *pool; pool = [[NSAutoreleasePool alloc] init]; NSString *string; string = [[[NSString alloc] init] autorelease]; /* use the string */ [pool drain]; } kperryua Yes, your second code snippit is perfectly valid. Every time -autorelease is sent to an object, it is added to the inner-most