Adobe ColdFusion 8 Web Application Construction Kit, Volume 2: Application Development

Chapter 24. Building User-Defined Functions

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In This Chapter

• Thinking About Extending CFML 3

• Functions Turn Input into Output 4

• Building Your First UDF 4

• Creating Libraries of Related UDFs 14

• Creating General-Purpose UDFs 18

• Sharing UDF Libraries with Others 21

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This chapter introduces you the brave new world of user-defined functions (UDFs), a feature that received a complete overhaul in ColdFusion MX. You can now create your own functions to do just about anything you can think of. User-defined functions are easy to write and even easier to use. You use them just like ColdFusion’s built-in functions.

Thinking About Extending CFML

Throughout this book, you have been learning how to use CFML’s built-in tags and functions ...