Objective-C is general-purpose language that is developed on top of C Programming language by adding features of Small Talk programming language making it an object-oriented language. It is primarily used in developing iOS and Mac OS X operating systems as well as its applications. Initially, Objective-C was developed by NeXT for its NeXTSTEP OS from whom it was taken over by Apple for its iOS and Mac OS X. Object-Oriented Programming Fully supports object-oriented programming, including the four pillars of object-oriented development: Encapsulation Data hiding Inheritance Polymorphism Example Code Mã (Javascript): #import <Foundation/Foundation.h> int main (int argc, const char * argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSLog (@"hello world"); [pool drain]; return 0; } Foundation Framework Foundation Framework provides large set of features and they are listed below. It includes a list of extended datatypes like NSArray, NSDictionary, NSSet and so on. It consists of a rich set of functions manipulating files, strings, etc. It provides features for URL handling, utilities like date formatting, data handling, error handling, etc. Learning Objective-C The most important thing to do when learning Objective-C is to focus on concepts and not get lost in language technical details. The purpose of learning a programming language is to become a better programmer; that is, to become more effective at designing and implementing new systems and at maintaining old ones. Use of Objective-C Objective-C, as mentioned earlier, is used in iOS and Mac OS X. It has large base of iOS users and largely increasing Mac OS X users. And since Apple focuses on quality first and its wonderful for those who started learning Objective-C. Lession List Basic Objective-C Objective-C - Environment Setup Objective-C - Program Structure Objective-C - Basic Syntax Objective-C - Data Types Objective-C - Variables Objective-C - Constants Objective-C - Operators Objective-C - Loops Objective-C - Decision Making Objective-C - Functions Objective-C - Blocks Objective-C - Numbers Objective-C - Arrays Objective-C - Pointers Objective-C - Strings Objective-C - Structures Objective-C - Preprocessors Objective-C - Typedef Objective-C - Type Casting Objective-C - Log Handling Objective-C - Error Handling Command-Line Arguments Advanced Objective-C Objective-C - Classes & Objects Objective-C - Inheritance Objective-C - Polymorphism Objective-C - Data Encapsulation Objective-C - Categories Objective-C - Posing Objective-C - Extensions Objective-C - Protocols Objective-C - Dynamic Binding Objective-C - Composite Objects Obj-C - Foundation Framework Objective-C - Fast Enumeration Obj-C - Memory Management Useful Resources Objective-C - Quick Guide Objective-C - Useful Resources Objective-C - Discussion
