IsDefined() vs. structKeyExists()

Sean Corfield recently blogged about the choice to use IsDefined vs. structKeyExists when trying to determine if a scoped variable (session, application, request, form url etc), exists or not.

Sean talks about how certain dot noted variables will or won’t be seen with IsDefined, BUT I found the fact that IsDefined looks for ANY possible definition even when the variable you’re searching for has been scoped.

Read his blurb to get the full effect.

This entry was posted on Thursday, July 29th, 2004 at 10:18 pm, contains 74 words, 6 images, and is filed under ColdFusion. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed. The views and opinions in this blog post are those of its author.