In an Objective-C class it is possible to declare instance variables with different levels of visibility. For public variables, any class or function that has a pointer to the object can access the content. Private ivars, however, are available only to the class itself. Objective-C also provides protected instance variables, which can be read or…
Debugging is hard, and one of the main reasons why programmers spend so much time fixing previous issues. It is no surprise that spending time on code debugging will inevitably reduce the available opportunities for more productive endeavors. That is why it is so important to learn how to handle bugs efficiently. First, let’s see…
Have you ever wished to find a concise and complete reference to Objective-C? Objective-C Programmer’s reference teaches everything you need to know about the language to become a productive developer of iPhone, iPad, and Mac OS X apps. The book can now be preordered from its Amazon web page. Here is a list of topics covered…