By Christopher Fairbairn, Collin Ruffenach, Johannes Fahrenkrug
Objective-C Fundamentals is a hands-on educational that leads you out of your first line of Objective-C code throughout the technique of construction local apps for the iPhone utilizing the newest model of the SDK. You'll learn how to stay away from the most typical pitfalls, whereas exploring the expressive Objective-C language via quite a few instance projects.
About the Technology
The iPhone is a worldly gadget, and learning the target interval is the most important to unlocking its extraordinary strength as a cellular computing platform. aim C's concise, wealthy syntax and have set, whilst matched with the iPhone SDK and the strong Xcode setting, deals a builders from any heritage a tender transition into cellular app improvement for the iPhone.
About the Book
Objective-C Fundamentals publications you progressively out of your first line of Objective-C code throughout the strategy of development local apps for the iPhone. beginning with bankruptcy one, you'll dive into iPhone improvement via development an easy video game so you might run instantly. You'll use instruments like Xcode four and the debugger to help you turn into a extra effective programmer. via operating via a number of easy-to-follow examples, you'll research useful innovations and styles you should use to create sturdy and strong apps. And you'll how one can stay away from the commonest pitfalls.
No iOS or cellular event is needed to profit from this ebook yet familiarity with programming quite often is helpful.
buy of the print publication comes with a suggestion of a loose PDF, ePub, and Kindle e-book from Manning. additionally to be had is all code from the book.
What's Inside* Objective-C from the floor up
* constructing with Xcode 4
* Examples that paintings unmodified on iPhone
Table of Contents <ol><h5>PART 1 GETTING begun WITH OBJECTIVE-C</h5> * development your first iOS application
* information forms, variables, and constants
* An creation to objects
* Storing information in collections
<h5>PART 2 construction your personal OBJECTS</h5> * developing classes
* Extending classes
* Dynamic typing and runtime style information
* reminiscence management
<h5>PART three MAKING greatest USE OF FRAMEWORK FUNCTIONALITY</h5> * errors and exception handling
* Key-Value Coding and NSPredicate
* analyzing and writing program data
* Blocks and Grand principal Dispatch
* Debugging techniques
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Additional info for Objective-C Fundamentals
The basic data types 37 What does floating point mean? In computing, floating point means that the equivalent of the decimal (or radix) point in the number can “float”: the decimal point can be placed anywhere between the significant digits that make up the number, on a number-by-number basis. By contrast, in a fixed-point number, the decimal point is always positioned with a fixed number of digits after it. Objective-C doesn’t provide any standard fixed-point data types; you can typically implement them yourself by using the existing integer data types.
A constant is any value that can never change its value while the application is running. A constant doesn’t have to be a single number; for example, the following variable declaration also makes use of a constant value. int a = 5 + 3; The value calculated by the expression 5 + 3 can never result in a number other than 8. The Objective-C compiler calculates the value of this expression during compilation and replaces it with a single constant value. By default, integer constants are specified in decimal, or base 10, which is the most familiar notation for most people.
This is a critically important fact to remember, especially when using functions such as strcat or strcpy, which are used to build or append to existing strings. "); Although this code snippet is correct, it has a problem if the resultant string could ever become larger than 31 characters. The square brackets after msg cause the compiler to allocate space for 31 characters (plus a so-called NULL character, which indicates the end of the string).