IOS Memory Management Summary

1. [Super init] must be called in the init function, and [Super dealloc] must be called in the dealloc function.

2. Call the object generated by the function starting with "alloc", "new", "copy", "mutablecopy", which must be release

3. The object calls retain and must be release.

4. The object can call autorelease to delay release.

5. Each thread has at least one autoreleasepool.

6. For collections such as nsarray and nsdictionary, calling release will automatically remove (remove and release) all contained objects.

7. If you do not want to pollute the current autoreleasepool, you can do this.

NSAID utoreleasepool * Pool = [[NSAID utoreleasepool alloc] init];

// YourCode

[Pool release];

8. Avoid loop references, such as a-> B-> C-> A. If you cannot avoid adding other release functions (dispose) to the object to break the loop.