Because you where using the default scope that can be seen by default all functions can see. The Var keyword declares the scope private to the function alone.
-------------- Ian Skinner Web Programmer BloodSource www.BloodSource.org Sacramento, CA -----Original Message----- From: Cedric Villat [mailto:[EMAIL PROTECTED] Sent: Thursday, September 18, 2003 10:13 AM To: CF-Talk Subject: Re:Recursion and Scope problem? Bingo, worked like a champ. But I'm still wondering WHY the scopes be overwritten? I just don't get it.... Cedric >Try using the "var" keyword in your first four <cfset> statements. > ><cfset var root_node = Arguments.node> ><cfset var levels = ... > > >-----Original Message----- >From: Cedric Villat [mailto:[EMAIL PROTECTED] >Sent: Thursday, September 18, 2003 12:59 PM >To: CF-Talk >Subject: Recursion and Scope problem? > > >Ok, I'm doing a bit of recursion, and my variables seem to be overwriting >themselves, which makes no sense to me. Here is my code: > ><cffunction name="getDTreeWidth" returntype="numeric"> > <cfargument name="node" type="string" required="yes"> > <cfargument name="level" type="numeric" required="yes"> > > <cfset root_node = Arguments.node> > <cfset levels = Arguments.level> > <cfset children = Request.children> > <cfset width = 0> > > <cfif levels EQ 0> > <!--- No more levels to show ---> > <cfset width = 1> > <cfelseif NOT StructKeyExists(children, root_node) OR >ArrayLen(children[root_node]) LTE 0> > <!--- No Children ---> > <cfset width = 1> > <cfelse> > <cfloop from="1" to="#numChildren(root_node)#" index="a"> > <cfset width = width + getDTreeWidth(children[root_node][a], levels - 1)> > </cfloop> > </cfif> > > <cfreturn width> ></cffunction> > > >In this example, the root_node is "Homer Simpson". He has 3 children Bart, >Lisa, and Maggie. When the function is first run, Arguments.node is "Homer >Simpson". It goes through the code until it gets to the recursive call >getDTreeWidth() which then calls itself for each child. After calling >getDTreeWidth() for Bart, it seems to work. When the function returns a >number and is added to the width, the next time through Homer Simpson's >loop, the root_node is now "Bart Simpson"! How could the recursive call to >Bart Simpson overwrite Homer Simpson's original arguments? Is this a bug or >am I missing something here? > >Any help would be appreciated. It may not make sense, so let me know if you >need some more clarification. > >Cedric > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Message: http://www.houseoffusion.com/lists.cfm?link=i:4:137535 Archives: http://www.houseoffusion.com/lists.cfm?link=t:4 Subscription: http://www.houseoffusion.com/lists.cfm?link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Your ad could be here. Monies from ads go to support these lists and provide more resources for the community. http://www.fusionauthority.com/ads.cfm
