How does the NSAutoreleasePool autorelease pool work?

by

Yes, your second code snippit is perfectly valid.

Every time -autorelease is sent to an object, it is added to the inner-most autorelease pool. When the pool is drained, it simply sends -release to all the objects in the pool.

Autorelease pools are simply a convenience that allows you to defer sending -release until “later”. That “later” can happen in several places, but the most common in Cocoa GUI apps is at the end of the current run loop cycle.

More Related Contents:

  1. When to use -retainCount?
  2. Why is @autoreleasepool still needed with ARC?
  3. Retain cycle on `self` with blocks
  4. Why would you use an ivar?
  5. Class methods which create new instances
  6. Weak NSString variable is not nil after setting the only strong reference to nil
  7. In which situations do we need to write the __autoreleasing ownership qualifier under ARC?
  8. Why has NSNumber such strange retainCounts?
  9. How is release handled for @synthesized retain properties?
  10. With ARC, what’s better: alloc or autorelease initializers?
  11. Tagged pointers in Objective-C
  12. What is the cost of using autorelease in Cocoa?
  13. Does @”some text” give an autoreleased or retain 1 object back?
  14. What increases an object’s retain count?
  15. What is the difference between a __weak and a __block reference?
  16. How do i give Ratings objective c?
  17. Creating an abstract class in Objective-C
  18. How to sort a NSArray alphabetically?
  19. What’s the difference between a string constant and a string literal?
  20. iOS: Compare two dates
  21. Capturing touches on a subview outside the frame of its superview using hitTest:withEvent:
  22. Xcode doesn’t show the line that causes a crash
  23. What does this caret ^ syntax, with void on either side mean? [duplicate]
  24. Search through NSString using Regular Expression
  25. How do you call an Objective-C variadic method from Swift?
  26. Formatting a number to show commas and/or dollar sign
  27. Question about @synthesize
  28. Fire local notification every day on different times
  29. Objective c, Memory management of instance members
  30. Xcode linker error: file too small for architecture x86_64

Leave a Comment