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.
Why are class methods such as
+ (NSMutableArray *)array;
needed when there are perfectly fine parent class methods such as
+ arrayWithObjects:(id)firstObj, ...;
which could be set to
[array arrayWithObjects:nil]
and have the same effect.
Are they actually not equivalent things?
They’re convenience methods, to make it easier to just get an autoreleased object fast instead of having to write a lot more to get the same result.
BTW,
NSArraydoes not have an instance method calledarrayWithObjects, they are only class methods.