I have been reading about Protocols on Objective-C but I cannot grasp this: Consider this line What is the purpose of declaring the variable to co ...
I have been reading about Protocols on Objective-C but I cannot grasp this: Consider this line What is the purpose of declaring the variable to co ...
@try { if([Getprices count]>0) { So I got following info to my mail Stack Trace: -[__NSCFString count]: unrecognized selector sent to instan ...
I just started to work on a new project. It has a lot of legacy code and I found the following code I have a couple of doubts: What could be th ...
When I use assign when declaring a synthesized propery, does ARC automatically still create a matching ivar to it? My property is as follows And ...
Assuming I have the following class. If I then want to assign a value to the age variable I could use the class method to do the following in main. ...
I have come to find that many of the times in which I want to have a synthesized readonly property, I merely implement the getter method of that prope ...
When setting the readonly attribute in the interface section this 'disables' the setter method for the property. I need some clarification with: W ...
I'm aware best practices for Objective-C development says IBOutlets should always be defined as properties according to Apple. From a practical pe ...
I've made an XMLParser class in objective-c and I can't seem to set the iVars in my shared store within the parser process, I've tried numerous ways b ...
Just when you think you understand something, you don't! :) I understand that if I make a variable a property, I can access it anywhere in the Class ...
I've recently got stuck in the middle of choosing between an ivar and static field. For instance: I need to toggle traffic lights between red and gree ...
Previously I have always seen example of use of properties and iVars like this... Inside SomeClass.h Then in SomeClass.m More recently (in the ...
Assume I have two base classes, Container and Gizmo. Class Container has an instance variable of class Gizmo. Now I subclass Container (call that Sub ...
After trying to access ivars using KVC, I have noticed that there was no protection on private and protected ivars. It doesn't matter what I put a in ...
I am storing some data (some floats, some strings) to a plist and then reading them back. When I read them back, I assign them to some ivars in my vie ...
I understand that starting with iOS 4, there is now the ability to not declare iVars at all, and allow the compiler to automatically create them for y ...