not unknown... obviosuly its known :-) known as nothing! That should read the unnamed scope.
Sorry If I confused matters... ----- Original Message ----- From: "Michael Tangorre" <[EMAIL PROTECTED]> To: "CF-Talk" <[EMAIL PROTECTED]> Sent: Tuesday, June 10, 2003 1:32 PM Subject: Re: CFC Newbie Discussion. > Let me point out the scope bug... > > using "this" scope exposes your data members outside of the cfc. In > addition, the varibales scope is not the default for not providing a scope > within a CFC. There is something known as the "unknown" scope. This unknown > scope allows data members to be available to functions within the CFC... not > outside of. > > this.someVar would be accessible inside and outside of the CFC > someVar would be accessible inside the CFC to the functions only. > > > > ----- Original Message ----- > From: "Ian Skinner" <[EMAIL PROTECTED]> > To: "CF-Talk" <[EMAIL PROTECTED]> > Sent: Tuesday, June 10, 2003 1:24 PM > Subject: CFC Newbie Discussion. > > > > I'm experimenting with my first CFC. I've written these simple example > > files. > > > > *** test.cfc *** > > <cfcomponent displayname="My First CFC" hint="A trial CFC"> > > <cfset this.X = 10> > > <cfset this.Y = 15> > > > > <cfset A = 5> > > <cfset B = 3> > > > > <cffunction name="multiplyXY" access="public" returntype="numeric"> > > <cfset myResult = this.X * this.Y> > > <cfreturn myResult> > > </cffunction> > > > > <cffunction name="multiplyAB" access="public" returntype="numeric"> > > <cfset myResult = A * B> > > <cfreturn myResult> > > </cffunction> > > </cfcomponent> > > *** end *** > > > > *** test.cfm *** > > <cfobject name="testObj" component="test"> > > <cfdump var="#testObj#"> > > > > <cfset this.X = 12> > > <cfset this.Y = 24> > > > > <cfset A = 21> > > <cfset B = 32> > > > > <cfinvoke component="#testObj#" method="multiplyXY" returnvariable="joe"/> > > <cfinvoke component="#testObj#" method="multiplyAB" returnvariable="sam"/> > > > > <cfinvoke component="test" method="multiplyXY" returnvariable="joe2"/> > > <cfinvoke component="test" method="multiplyAB" returnvariable="sam2"/> > > > > <cfoutput> > > #testObj.X# * #testObj.Y# = #joe#<br> > > #testObj.X# * #testObj.Y# = #testObj.multiplyXY()#<br> > > #this.X# * #this.Y# = #this.X * this.Y#<br> > > <br> > > #sam#<br> > > #testObj.multiplyAB()#<br> > > #A * B#<br> > > <br> > > #joe2#<br> > > #sam2#<br> > > </cfoutput> > > *** end *** > > > > What I would like to discuss is the performance differences between the > > various component methods I've tested here. > > > > In the CFC code, the X and Y variables are in the "this" scope and the A > and > > B variables are in the default "variable" scope. What are the differences > > between these practices other then the X and Y are available as properties > > of an object (obj.X and obj.Y). > > > > Then in the CFM code I accessed the component a couple different ways. I > > first used a <cfobject> tag to "instantiate" an instance of the component > as > > a object variable "testObj". I then accessed the methods of that instance > > with a <cfinvoke> on testObj and directly [testObj.method()]. Finally I > > just accessed the methods of the component directly with <cfinvoke>. > > > > I would like to discuss the pros and cons of these different practices and > > when one might be better then another. Also, I remember reading about > some > > kind of scope bug involving CFC's, but since I wasn't really familiar with > > CFC's at the time, I really didn't understand what I was reading. What > > would this be about? > > > > Thank You > > > > -------------- > > Ian Skinner > > Web Programmer > > BloodSource > > Sacramento, CA > > > > > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Archives: http://www.houseoffusion.com/cf_lists/index.cfm?forumid=4 Subscription: http://www.houseoffusion.com/cf_lists/index.cfm?method=subscribe&forumid=4 FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Get the mailserver that powers this list at http://www.coolfusion.com Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
