Download Adobe Flex 3.0 For Dummies by Doug McCune, Deepa Subramaniam PDF

By Doug McCune, Deepa Subramaniam

Able to flex your net improvement muscle tissues and begin development wealthy web functions? With Flex 3.0, you could create nice RIAs that practice like computing device functions utilizing Adobe Flash participant, that is already put in on greater than ninety five percentage of Internet-connected desktops. And the joys and simple way™ to wake up to hurry on Flex is with Adobe Flex 3.0 For Dummies.
This pleasant advisor indicates you ways Flex enables you to leverage the ability of Adobe’s ubiquitous Flash expertise to construct huge functions. If you’ve written code in any language, Adobe Flex 3.0 For Dummies gets you began, introduce you to FlexBuilder and the Flex framework, and feature you construction a few particularly “flashy” stuff ahead of you recognize it. You’ll learn how to:<ul type="disc">* advance interactive functions with out being concerned approximately browser transformations* Use the development version* paintings with ActionScript and MXML* construct uncomplicated consumer interface controls and data-driven controls* manage info binding* layout and validate person information* Create, run, and fresh a undertaking* discover Flex supervisor periods* paintings with styling and skinning Flex components
All the code utilized in the publication is at the spouse site to save lots of you that rather more time. Adobe Flex 3.0 For Dummies is helping you develop into Flex-literate in a flash!
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A class that implements an interface must implement all functions defined in the interface as public functions. You can define only public methods within an interface, not properties. However, because getters and setters are methods, you can define those in an interface as well. You can modify the Employee class to implement the IPayee interface. ”); } ... To understand the benefit of using interfaces, imagine which kinds of entities the Boss class you created might have to pay. Obviously, all employees need to get paid, but also, possibly, merchants, utility companies, and government tax boards, for example.

Because setters work the same way, you can have specific code that runs whenever a certain property is set. In Listing 3-3, the setter for hourlyRate calculates the yearly salary for that rate and sets the salary property. Learning to love the black box An important concept in object-oriented programming is that every object is a black box, which exposes specific functionality but doesn’t let you peer behind the curtain to see the details of the implementation. When you program in an object-oriented language, you don’t need to worry about how a certain class does what it does; all you need to know is which methods and properties you can use.

You can access getters and setters just as you access normal properties of a class. hourlyRate; trace(hourlyRate); 33 34 Par t I: Introducing Flex Because you defined hourlyRate as a getter, you can access it the same way you access a normal property. But when you access the hourlyRate getter, the function you defined runs and performs the calculation. Because setters work the same way, you can have specific code that runs whenever a certain property is set. In Listing 3-3, the setter for hourlyRate calculates the yearly salary for that rate and sets the salary property.

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