9. September 2009 9:40 by Marc
FYI: Function returning Void kills Variables
9
Sep/091
Sep/091
I recently discovered some interesting behaviour in Coldfusion. If you ask for a result of a function in a variable and you set returntype void, the variable is destroyed and cant be found after this.
Example:
<cffunction name="getSomething" returntype="void"> Do something here, like updating a database or increasing a counter value </cffunction> <cfset VARIABLES.RecieveSomething = ""> <cfset VARIABLES.RecieveSomething= getSomeThing()> <cfif IsDefined("VARIABLES.RecieveSomething")> still there <cfelse> cant found this variable anymore </cfif>
Returntype Void is kinda tricky, so use it well-considered.
