1. CFC Best Practices, Tips, and Tricks Raymond Camden jedimaster@mindseye.com

2. Agenda Basic (but real!) Examples Best Practices (Suggestions) Tips and Tricks Resources

3. Examples www.cflib.org CFCs serve as DB abstraction ResourceBundle CFC Localization Utility SimpleCMS Simple CMS based on CFCs

4. Best Practices Control white space generated by CFC

5. Best Practices Supply Optional Attributes <cffunction name="test" returnType="string" access="public" output="false" hint="This function does blah using Foo's logic.">

6. Best Practices Use the VAR scope!.....

7. Understand Data Scopes Variables This Arguments Function Local

8. Cache CFC Instances CFC creation can be slow. Use createObject/cfobject to create an instance. (typically) works with new instances.

9. Pseudo-Constructor Any code not inside. Useful to initialize variables. BlueDragon has

10. Dealing with Application Variables Application.cfm and when it's run: Flash Remoting/WS calls Same folder Don't rely on it! Application CFC

11. Inheritance/Super Use for Is-A, not Has-A In other words, inheritance is used when a CFC defines as "is a" relationship with it's parent. It should not be used for simple code re-use. Super allows for a child method to extend a parent method.

12. Pass by Ref/by Value Values passed to CFC methods follow the same rules as values passed to UDFs. The following are passed by reference: Structures Queries Other "comlpex" objects (including CFCs)

13. Resources www.cfczone.org cfcdev mailing list Top Ten Tips article by Rob Brooks-Bilson http://www.oreillynet.com/pub/a/javascript/2003/09 /24/coldfusion_tips.html?page=1 CFC Best Practices by Nathan Dintenfass http://www.dintenfass.com/cfcbestpractices/