Which iPhone OS memory management rules and how-to's do you know?

Question

Currently I am jumping into the ice cold water called \"memory management in iPhone OS\".

Here\'s one rule i\'ve learned:

Every time I see an alloc in my method,

Answer 1

Actually, any time you initialize an object and the method name includes "init" you are responsible for releasing it. If you create an object using a Class method that does not include the word "init" then you don't.

For example:

  NSString *person = [NSString stringWithFormat:"My name is %@", name];

does not need a release. But:

  Person *person = [[Person alloc] init];

needs a release (as you stated in your question). Likewise:

  Person *person = [[Person alloc] initWithName:@"Matt"]];

also needs a release.

This is a convention, not a rule of the language, but you will find that it is true for all Apple-supplied APIs.