Objective-C 2.0 Essentials
by Neil Smyth
Publisher: Techotopia 2010
Number of pages: 204
The Objective-C 2.0 Essentials free online book contains 34 chapters of detailed information intended to provide everything necessary to gain proficiency as an Objective-C programmer for both Mac OS X and iPhone development.
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by B. Altenberg, A. Clarke, P. Mougin - CocoaLab
A free book for starting with Cocoa using Objective-C. It teaches you the basics of programming, in particular Objective-C programming, using Xcode. Written for non-programmers, and aimed at leveling the learning curve as much as possible.
- Apple Inc.
Objective-C is a small but powerful set of extensions to the standard ANSI C language. This document fully describes the Objective-C language. It concentrates on the Objective-C extensions to C, not on the C language itself.
by Ryan Hodson - Smashwords
This book is both a concise quick-reference and a comprehensive introduction for newcomers to the Objective-C programming language. It walks through each language feature step-by-step, explaining complex programming concepts via hands-on examples.
- NeXT Software, Inc.
Objective-C is implemented as set of extensions to the C language. This book both introduces the object-oriented model that Objective-C is based upon and fully documents the language. It concentrates on the Objective-C extensions to C.