I recently taught a Fast Track to ColdFusion 7 course and what struck me was the liberal use of the isDefined() function throughout the course material. Now, I confess, I have used the function many times in the past, but now more commonly use the structKeyExists() function. So why does Macromedia and now Adobe, still highlight the isDefined() function when, in my opinion, structKeyExists() is more efficient? Read more – ‘isDefined() vs structKeyExists()’.
