Download PDF by Robert Clair: Learning Objective-C 2.0: A Hands-On Guide to Objective-C

By Robert Clair

ISBN-10: 0321711386

ISBN-13: 9780321711380

With a purpose to examine Objective-C 2.0 to write down courses for Mac OS X, iPhone, iPad, or iPod contact, you could have come to the correct position! Concise, readable, and pleasant, studying Objective-C 2.0 is the suitable beginner's advisor to the most recent model of Objective-C. Longtime Mac OS X and iPhone developer Robert Clair covers every thing from absolutely the fundamentals to Objective-C 2.0's most modern options. Clair starts with a pragmatic refresher on C and object-oriented programming and walks you thru developing your first Objective-C software with Xcode.

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Learning Objective-C 2.0: A Hands-On Guide to Objective-C by Robert Clair PDF

That allows you to examine Objective-C 2. zero to write down courses for Mac OS X, iPhone, iPad, or iPod contact, you have come to the appropriate position! Concise, readable, and pleasant, studying Objective-C 2. zero is the fitting beginner's advisor to the newest model of Objective-C. Longtime Mac OS X and iPhone developer Robert Clair covers every thing from absolutely the fundamentals to Objective-C 2.

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Extra info for Learning Objective-C 2.0: A Hands-On Guide to Objective-C for Mac and iOS Developers

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1. Brian W. Kernighan and Dennis M. Ritchie, The C Programming Language, Second Edition. (Englewood Cliffs: Prentice Hall, 1988). 2 Think for a moment about how you might go about learning a new natural language. The first thing to do is look at how the language is written: Which alphabet does it use (if it uses an alphabet at all; some languages use pictographs)? Does it read left to right, right to left, or top to bottom? Then you start learning some words. You need at least a small vocabulary to get started.

When a function is called, the expressions in the argument list of the calling statement are evaluated and their values are passed to the function. A function cannot directly change the value of any of the variables in the calling context. This function has no effect on anything in the calling context: void salesTax( float purchasePrice, float taxRate, float carSalesTax) { // Changes the local variable calculateTax but not the value of // the variable in the calling context carSalesTax = purchasePrice * taxRate; return; } To change the value of a variable in the calling context, you must pass a pointer to the variable and use that pointer to manipulate the variable’s value: void salesTax( float purchasePrice, float taxRate, float *carSalesTax) { *carSalesTax = purchasePrice * taxRate; // this will work return; } Note The preceding example is still call by value.

Must be either integers, character constants, or constant expressions that evaluate to an integer. ) Duplicate cases with the same integer are not allowed. When a switch statement is executed, integer_expression is evaluated and the switch compares the result with the integer case labels. If a match is found, execution jumps to the statement after the matching case label. Execution continues in sequence until either a break statement or the end of the switch is encountered. A break causes the execution to jump out to the first statement following the switch.

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Learning Objective-C 2.0: A Hands-On Guide to Objective-C for Mac and iOS Developers by Robert Clair


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