Beginning AppleScript by Stephen G. Kochan

By Stephen G. Kochan

What's this publication approximately? aimed toward programmers with out earlier improvement wisdom, starting AppleScript serves as a accomplished advisor to utilizing AppleScript at the Mac OS X platform. This identify introduces the reader to AppleScript, after which illustrates tips on how to successfully commence writing scripts via pattern courses as each one notion is brought. routines on the finish of every bankruptcy let the reader to check and exhibit their wisdom on tips on how to write sensible scripts. The appendices comprise an inventory of alternative assets for added developer info, and a precis of the language compatible for reference.

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All compound statements are terminated by the keyword end, followed by the name of the compound statement. As an example of a compound statement, the following code tests whether a variable count is equal to 100 and displays a message if it is. Don’t try to fully understand how this works; I show it here only to illustrate a compound statement: 33 Chapter 2 if count is equal to 100 then display dialog “Count equals 100” end if The name of this compound statement is if. It contains one other statement, which executes a display dialog command.

When you opened a new script editor window and wrote the variable names thecounter and ThEcOuNtEr, Script Editor changed those to all caps as well when you compiled the program. Don’t get confused here, the variable is not shared across multiple windows, only its spelling. In other words, you couldn’t set the value of THECOUNTER to 100 in one window and then access its value in another. Writing Special Variable Names AppleScript allows you to define variables that can contain any characters you like, including space characters, return characters, dollar signs, and so on.

The command is followed by the character string to be spoken. ” The beep command takes an optional numeric parameter that specifies the number of times to beep your system. For example, beep 2 causes two beeps. Modify the last program in this chapter to beep 3 times before the dialog is displayed. 2 Variables, Classes, and Expressions In this chapter you learn about how to work with variables in your programs. You also learn about many of the built-in AppleScript data types or classes. The basic arithmetic operators are covered in this chapter, and you see how to write arithmetic expressions and perform basic conversions between data types.

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