Top "Ivar" questions

In object-oriented programming, an instance variable is a variable defined in a class (i.e. a member variable), for which each object of the class has a separate copy, or instance.

Why would you use an ivar?

I usually see this question asked the other way, such as Must every ivar be a property? (and I like …

objective-c ios memory-management key-value-observing ivar
Need to declare a public instance variable in Objective-C

I'm trying to declare some instance variables for a custom button class in Objective-C (for iOS): @interface PatientIDButton : UIButton { NSUInteger …

objective-c visibility public ivar
Reason to use ivars vs properties in objective c

I have been unable to find any information on this topic and most of what I know about it has …

objective-c properties ivar
Syntax for accessing instance variables? (Objective-C)

What is the proper syntax for accessing an instance variable in Objective-C? Assume we have this variable: @interface thisInterface : UIViewController { …

iphone objective-c ios ivar
Property vs. ivar in times of ARC

It is my understanding that setting an ivar now retains the object being assigned to it, since setting variables defaults …

objective-c properties automatic-ref-counting ivar