> If you do this: > > <cfset var s = structNew()> > <cfset s = mystruct> > > Then s is not a struct, but a pointer to mystruct, so > whenever you set a property of s, you are in fact setting a > property of mystruct.
There are two things worth pointing out here, I think. The first, trivial, point is that I think you meant to type "<cfset var mystruct = StructNew()>". The second and more important point is that there's a subtle error in your conclusion. While "s" would be a pointer to a structure rather than the structure itself, so would "mystruct"! That is, when you do this: <cfset mystruct = StructNew()> the variable "mystruct" is just a reference to a structure object. When you then do this: <cfset s = mystruct> you now have two references to the same structure object. Neither reference is the thing itself - they are just both names you can use to get to the thing itself. Here's a description of stack and heap allocation in Python, which is for our purposes similar enough to how things work in CF: http://mail.python.org/pipermail/tutor/2001-July/007318.html Dave Watts, CTO, Fig Leaf Software http://www.figleaf.com/ Fig Leaf Software provides the highest caliber vendor-authorized instruction at our training centers in Washington DC, Atlanta, Chicago, Baltimore, Northern Virginia, or on-site at your location. Visit http://training.figleaf.com/ for more information! ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:207888 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
