By Stephen G. Kochan

Programming in Objective-C, 6th variation
Updated for OS X 10.9 Mavericks, iOS 7, and Xcode 5

Programming in Objective-C is a concise, rigorously written educational at the fundamentals of Objective-C and object-oriented programming for Apple's iOS and OS X systems.

The booklet makes no assumptions approximately past adventure with object-oriented programming languages or with the interval (which Objective-C relies upon). due to this, either newbies and skilled programmers alike can use this e-book to speedy and successfully study the basics of Objective-C. Readers may also examine the strategies of object-oriented programming with no need to first examine all the intricacies of the underlying c language.

This new angle to studying, mixed with many small software examples and routines on the finish of every bankruptcy, makes Programming in Objective-C superb for both school room use or self-study.

This variation has been totally up to date to include new Objective-C positive aspects and applied sciences brought with Xcode five, iOS 7, and Mac OS X Mavericks.

“The most sensible booklet on any programming language that I’ve ever learn. with a purpose to examine Objective-C, purchase it.”–Calvin Wolcott

“An first-class source for a brand new programmer who desires to examine Objective-C as their first programming language–a woefully underserved market.”–Pat Hughes

Contents at a Glance

1 advent

Part I - The Objective-C Language
2 Programming in Objective-C
3 sessions, items, and strategies
4 info forms and Expressions
5 software Looping
6 Making judgements
7 extra on sessions
8 Inheritance
9 Polymorphism, Dynamic Typing, and Dynamic Binding
10 extra on Variables and knowledge kinds
11 different types and Protocols
12 The Preprocessor
13 Underlying c programming language positive factors

Part II - the basis Framework
14 creation to the root Framework
15 Numbers, Strings, and Collections
16 operating with documents
17 reminiscence administration and automated Reference Counting (ARC)
18 Copying items
19 Archiving

Part III - Cocoa, Cocoa contact, and the iOS SDK

20 advent to Cocoa and Cocoa contact
21 Writing iOS purposes

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Extra resources for Programming in Objective-C (6th Edition)

Sample text

Each time you wanted to refer to the fraction, you’d have to refer to the corresponding numerator and denominator. And performing operations on these fractions would be just as awkward. It would be better if you could define a fraction as a single entity and collectively refer to its numerator and denominator with a single name, such as myFraction. You can do that in Objective-C, and it starts by defining a new class. 1 using a new class called Fraction. Here, then, is the program, followed by a detailed explanation of how it works.

If you’re used to using the UNIX shell and command-line tools, you might want to edit, compile, and run your programs using the Terminal application. Here, we examine how to go about doing that. Before attempting to compile you program from the command line, make sure that you have Xcode’s Command Line Tools installed on your system. Go to Xcode, Preferences, Downloads, Components from inside Xcode. 10. This figure indicates that the Command Line Tools have not been installed on this system. If they haven’t, an Install button will be shown, which you can click to install the tools.

All characters included between the opening /* and the closing */ are treated as part of the comment statement and are ignored by the Objective-C compiler. This form of comment is often used when comments span many lines of code, as in the following: /* This file implements a class called Fraction, which represents fractional numbers. Methods allow manipulation of fractions, such as addition, subtraction, etc. pdf */ Which style of comment you use is entirely up to you. Just note that you cannot nest the /* style comments.

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