Read e-book online Learn Objective-C on the Mac: For iOS and OS X (2nd Edition) PDF

By Mark Dalrymple, Scott Knaster, Waqar Malik

ISBN-10: 1430241896

ISBN-13: 9781430241898

Discover ways to write apps for a few of today's preferred applied sciences, together with the iPhone and iPad (using iOS), in addition to the Mac (using OS X). It starts off with Objective-C, the bottom language on which the local iOS software program improvement equipment (SDK) and the OS X are established. study Objective-C at the Mac: For OS X and iOS, moment version updates a top promoting e-book and is an intensive, newly up-to-date consultant to Objective-C.

Objective-C is a strong, object-oriented extension of C, making this replace the appropriate follow-up to Dave Mark’s bestselling study C at the Mac. no matter if you’re an skilled C programmer or you’re coming from a special language resembling C++ or Java, major Mac specialists Scott Knaster and Waqar Malik exhibit tips to harness the facility of Objective-C on your apps!

* a whole direction at the fundamentals of Objective-C utilizing Apple’s most up-to-date Xcode tools
* An creation to object-oriented programming
* complete insurance of latest themes like blocks, GCD, ARC, classification extensions, in addition to inheritance, composition, item initialization, different types, protocols, reminiscence administration, and organizing resource files
* An advent to development person interfaces utilizing what's referred to as the UIKit
* A primer for non-C programmers to get off the floor even swifter

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Read or Download Learn Objective-C on the Mac: For iOS and OS X (2nd Edition) PDF

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Additional info for Learn Objective-C on the Mac: For iOS and OS X (2nd Edition)

Sample text

This runaround is a form of indirection. Luckily, computers have infinite patience and can handle being sent from place to place to place looking for an answer. Variables and Indirection You might be surprised to find out that you have already used indirection in your programs. The humble variable is a real-world use of indirection. Consider this small program that prints the numbers from one to five. h> int main (int argc, const char *argv[]) { NSLog (@"The numbers from 1 to 5:"); for (int i = 1; i <= 5; i++) { NSLog (@"%d\n", i); } CHAPTER 3: Introduction to Object-Oriented Programming 23 return (0); } // main Count-1 has a for loop that runs five times, using NSLog() to display the value of i each time around.

Txt", "r"); char word[100]; while (fgets(word, 100, wordFile)) { // strip off the trailing \n word[strlen(word) - 1] = '\0'; CHAPTER 3: Introduction to Object-Oriented Programming 27 NSLog (@"%s is %lu characters long", word, strlen(word)); } fclose (wordFile); return (0); } // main Let’s stroll through Word-Length-3 and see what it’s doing. txt file for reading. Next, fgets() reads a line of text from the file and places it into word. The fgets() call preserves the newline character that separates each line, but we really don’t want it: if we leave it, it will be counted as a character in the word.

If you’ve used C at all, you have undoubtedly encountered printf() in your travels. NSLog() is a Cocoa function that works very much like printf(). Just like printf(), NSLog() takes a string as its first argument. This string can contain format specifiers (such as %d), and the function takes additional parameters that match the format specifiers. printf() plugs these extra parameters into the string before it gets printed. As we’ve said before, Objective-C is just C with a little bit of special sauce, so you’re welcome to use printf() instead of NSLog() if you want.

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Learn Objective-C on the Mac: For iOS and OS X (2nd Edition) by Mark Dalrymple, Scott Knaster, Waqar Malik


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