Cocoa Programming for Mac OS X for Dummies by Erick Tejkowski

By Erick Tejkowski

Cocoa programming isn't just the well-liked improvement surroundings for Mac OS X, it’s additionally a major software for growing iPhone and iPod contact software program. That makes this a good time to benefit Cocoa, and Cocoa Programming for Mac OS X For Dummies is the best position to start!

This booklet grants a superb starting place in Cocoa and the bizarre syntax of Objective-C. You’ll examine what’s new in Cocoa frameworks and create an software step-by-step. for instance, you can:

• See how Xcode underlies your functions because the major component to Apple’s IDE
• learn the fundamentals of the Objective-C language, the weather of a Cocoa interface, and object-oriented programming
• Use Xcode and Interface Builder
• Spruce up your apps with audio, video, net beneficial properties, stylized textual content, and more
• Create purposes with the lovely pics for which Macs are famous
• See the best way to construct apps with a number of records or even executables that aren’t conventional Mac apps
• Use all of the interesting new Cocoa features
• paintings with Cocoa numbers, arrays, Booleans, and dates
• construct document-based applications
• Simplify with key-value coding

The larger you already know Cocoa programming, the higher the purposes you could create for Mac OS X, iPhone, and iPod contact. Cocoa Programming for Mac OS X For Dummies makes it effortless and fun!

Note: CD-ROM/DVD and different supplementary fabrics are usually not integrated as a part of book dossier.

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H” If you’re a seasoned C programmer, remember that #import in Cocoa is like #include in standard C. The directive lets your code know where the definition of your class is. After the header, the source code lists the implementation of the Fusebox class: @implementation Fusebox One part of that Fusebox class is a calculateAnswer action. By adding the calculateAnswer action, you can make your application functional. All code that appears between the two empty braces of the calculateAnswer method executes whenever a user clicks the button in your interface.

Figure 2-20: If a build goes off without a hitch, the debugger displays Succeeded in the bottom-right corner. Chapter 2: Creating Your First Cocoa Application Figure 2-21: The completed application in action. Keep in mind that because you’re working with only integers; you won’t get correct results if you enter numbers with fractional values (see Figure 2-22). If you use a number with a decimal in it, you’ll get a result without the fractional part. Clearly, the calculator isn’t as robust as you might need.

M file displays, as shown in Figure 3-4.

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