vb.net qr code scanner INTRODUCING APPLESCRIPT in Objective-C

Generator QR Code in Objective-C INTRODUCING APPLESCRIPT

CHAPTER 1 INTRODUCING APPLESCRIPT
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Calling handlers is similar to asking someone for a cup of coffee: with a short sentence, you asked them to perform about 20 separate operations. When you re just starting to script, creating subroutines can be an added complication for which you may not be quite ready. Later, however, writing and calling subroutines can become some of the most important tasks you will do. Organizing your scripts with subroutines makes them easy to read and edit. It also allows you to write special code that can be later reused in other scripts. You can read about handlers in more detail in 2 and in 16, which is dedicated to the subject.
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So, what have you looked at thus far You saw that although AppleScript provides a rich language to work with, most important for now is that AppleScript allows you to achieve fantastic results by starting out small and simple. You also saw that in order for AppleScript to be useful, you need to have scriptable applications to which AppleScript can talk; after all, it s the ability to control useful applications that got you started with AppleScript in the first place, right
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PART
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How to AppleScript
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CHAPTER
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Scripting From the Ground Up
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K, all you been-scripting-for-a-year-and-think-you-can-script-the-New-York-City-traffic-lightsystem people, listen up. Although this chapter covers fundamental AppleScript concepts, it was written also for you. Nothing is better than rereading the stuff you think is way behind you. Like any other complex subject, AppleScript has a lot of levels, and to get up to the next level, you sometimes have to start fresh and pretend you know nothing.
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In this section, you ll write a script that contains some of the basic AppleScript constructs. Then you ll run the script and try to understand what happened line by line. This script will be a bit longer than your usual Hello World script; however, once you sift through all the lines, you ll be on top of it! Here s what the script will do: It will get a random number and use it to create a name for a folder. Then it will create the folder in the Finder, name it, and finally delete it if the user clicks Yes in a dialog box. This section will go over many big AppleScript issues. Don t get stressed if it s too much just go with the flow, read the text, and do the exercises. All of the points covered here will be repeated in great detail throughout the book. OK, let s start: 1. Open Script Editor. You can find it in the AppleScript folder of your Applications folder (unless the system administrator thought it was a game and deleted it in last night s software raid). The main window is divided into two parts: the top is the area where you can write your script, and the bottom is divided into three tabs that display various kinds of useful information. The three tabs are Description, Result, and Event Log. Both the Result tab and the Event Log tab are essential for locating problems and solving them. The toolbar at the top of the window contains buttons for basic AppleScript functions: Record, Stop, Run, and Compile. That s the tour for now; let s start scripting. 2. In the blank, new Script Editor window that should be staring you in the eye right now, type the following two-word command, as shown in Figure 2-1: random number The text you typed should be formatted with the font Courier. This is because it has not been compiled yet. To compile your script (which will, amongst other things, check whether your syntax is correct), either press the Enter key or click the Compile button. Once you compile the script, the font, and possibly the color of the text, changes. Suddenly AppleScript understands what you re saying. Well, it understand what you re saying given you speak to it properly, of course.
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