What is Objective-C?
Objective-C® is an object oriented language which lies on top of the C language. Apple Inc is used Objective-C as main programming language in Mac OS X and iOS® development and their respective API’s , Cocoa and Cocoa Touch.
Object Oriented Programming + Structured Programming = Objective C
- Objective-C is the primary language used to write Mac software.
- Objective-C® is a superset of the ANSI version of the C programming language and supports the same basic syntax as C.
- Everything C can do, Objective-C can do too, but not the other way around.
- All the object oriented syntax and operations are derived from SmallTalk.
- All the non-object oriented syntax and operations are identical to C.
- Since it lies on top of C, it is possible to compile any C program with an Objective-C compiler, and to freely include C code within an Objective-C class.
Addition to that, there are more features which gives more advantages when compared to other languages. Some features like Dynamic binding, Message Forwarding, Protocols and Deleagates and so.
The Objective-C language was chosen for a variety of reasons. First and foremost, it’s an object-oriented language. Objective-C is a fundamentally simple language. Its syntax is small, unambiguous, and easy to learn. Object-oriented programming, with its self-conscious terminology and emphasis on abstract design, often presents a steep learning curve to new recruits. A well-organized language like Objective-C can make becoming a proficient object-oriented programmer that much less difficult.
For example, it yields two big benefits that are hard to get with other nominally object-oriented languages:
- Objective-C supports an open style of dynamic binding, a style that can accommodate a simple architecture for interactive user interfaces. Messages are not necessarily constrained by either the class of the receiver or even the method name, so a software framework can allow for user choices at runtime and permit developers freedom of expression in their design. (Terminology such as dynamic binding, message, class, and receiver are explained in due course in this document.)
- Dynamism enables the construction of sophisticated development tools. An interface to the runtime system provides access to information about running applications, so it’s possible to develop tools that monitor, intervene, and reveal the underlying structure and activity of Objective-C applications.
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Objective-C Training Syllabus
- Objects, Classes, and Messaging
- Defining a Class
- Allocating and Initializing Objects
- Declared Properties
- Categories and Extensions
- Fast Enumeration
- Enabling Static Behavior
- Exception Selectors
- Remote Messaging