Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
If I’m using ARC, how can I call the following method using performSelector: without leaking?
- (SomeClass *)test {
return [[SomeClass alloc] init];
}
If I use something like the following, I get a warning that I might introduce leaks, because ARC doesn’t know what to do, since the selector is generated programmatically.
[object performSelector:selector];
In this particular case, you’re fine. The warning is telling you that the compiler cannot tell if
-performSelector:is going to return a +0 or a +1 object, and the compiler will proceed with the assumption that it’s a +0 object. So whether or not you leak depends on the actual method called. In this case, your method is-test, which according to the naming rules returns a +0 object. So calling this method with-performSelector:will not leak.